Siemens Canada Siemens Milltronics Process Instruments LR250DE SITRANS LR250 User Manual JE03 LR250 LUI

Siemens Canada Ltd. - Siemens Milltronics Process Instruments SITRANS LR250 JE03 LR250 LUI

User Manual

Instruction Manual January 2009LR250 (HART)sitrans
© Siemens Milltronics Process Instruments Inc. 2009 Safety Guidelines: Warning notices must be observed to ensure personal safety as well as that of others, and to protect the product and the connected equipment. These warning notices are accompanied by a clarification of the level of caution to be observed. Qualified Personnel: This device/system may only be set up and operated in conjunction with this manual. Qualified personnel are only authorized to install and operate this equipment in accordance with established safety practices and standards. Unit Repair and Excluded Liability: • The user is responsible for all changes and repairs made to the device by the user or the user’s agent. • All new components are to be provided by Siemens Milltronics Process Instruments Inc. • Restrict repair to faulty components only. • Do not reuse faulty components. Warning: Cardboard shipping package provides limited humidity and moisture protection. This product can only function properly and safely if it is correctly transported, stored, installed, set up, operated, and maintained. This product is intended for use in industrial areas. Operation of this equipment in a residential area may cause interference to several frequency based communications. Note: Always use product in accordance with specifications. Copyright Siemens Milltronics Process Instruments Inc. 2009. All Rights Reserved Disclaimer of Liability This document is available in bound version and in electronic version. We encourage users to purchase authorized bound manuals, or to view electronic versions as designed and authored by Siemens Milltronics Process Instruments Inc. Siemens Milltronics Process Instruments Inc. will not be responsible for the contents of partial or whole reproductions of either bound or electronic versions. While we have verified the contents of this manual for agreement with the instrumentation described, variations remain possible. Thus we cannot guarantee full agreement. The contents of this manual are regularly reviewed and corrections are included in subsequent editions. We welcome all suggestions for improvement. Technical data subject to change. MILLTRONICS®is a registered trademark of Siemens Milltronics Process Instruments Inc. Contact SMPI Technical Publications European Authorized Representative at the following address: Technical Publications Siemens AG Siemens Milltronics Process Instruments Inc. Industry Sector 1954 Technology Drive, P.O. Box 4225 76181 Karlsruhe Peterborough, Ontario, Canada, K9J 7B1 Deutschland Email: techpubs.smpi@siemens.com • For a selection of Siemens Milltronics level measurement manuals, go to: www. siemens.com/processautomation. Under Process Instrumentation, select Level Measurement and then go to the manual archive listed under the product family. • For a selection of Siemens Milltronics weighing manuals, go to: www. siemens.com/processautomation. Under Weighing Technology, select Continuous Weighing Systems and then go to the manual archive listed under the product family.
immmmmTable of Content sTable of ContentsTable of Contents ...............................................................................................................iSafety Notes ...........................................................................................................................................1Safety marking symbols ............................................................................................................1FCC Conformity ......................................................................................................................................1CE Electromagnetic Compatibility (EMC) Conformity ...................................................................2The Manual ............................................................................................................................................2Technical Support .................................................................................................................................3SITRANS LR250 Overview ................................................................................................5Specifications ....................................................................................................................7Power............................................................................................................................................. 7Performance................................................................................................................................. 7Interface ........................................................................................................................................ 8Mechanical................................................................................................................................... 8Environmental .............................................................................................................................. 9Process........................................................................................................................................ 10Approvals .................................................................................................................................... 10Programmer (infrared keypad) .............................................................................................. 11Dimensions ...........................................................................................................................................12Threaded Horn Antenna with extension .............................................................................12Threaded Horn dimensions ....................................................................................................13Flanged Horn with extension .................................................................................................14Flanged Horn dimensions .......................................................................................................15Raised-Face Flange per EN 1092-1 .......................................................................................16Flat-Face Flange ........................................................................................................................17Installation ........................................................................................................................20Mounting location ...............................................................................................................................21Nozzle design .............................................................................................................................21Nozzle location ..........................................................................................................................21Orientation in a vessel with obstructions ............................................................................22Mounting on a Stillpipe or Bypass Pipe ..............................................................................22Installation Instructions .....................................................................................................................23Wiring ................................................................................................................................24Power .....................................................................................................................................................24Connecting SITRANS LR250 .............................................................................................................24Wiring setups for hazardous area installations ..........................................................................25Intrinsically Safe wiring ........................................................................................................... 26Non-incendive wiring (US/Canada only) .............................................................................28Flameproof wiring .....................................................................................................................28Increased safety wiring ...........................................................................................................29Explosion-proof wiring (US/Canada only) ...........................................................................29Instructions specific to hazardous area installations ................................................................30Operating via the handheld programmer ....................................................................31Activating SITRANS LR250 ...............................................................................................................31The LCD Display ........................................................................................................................31Handheld Programmer ............................................................................................................32Programming SITRANS LR250 ...............................................................................................33Quick Start Wizard via the handheld programmer .....................................................................36
iimmmmmTable of Cont ent sAuto False Echo Suppression ..........................................................................................................38Requesting an Echo Profile ..............................................................................................................38Level application example ................................................................................................................39Operating via SIMATIC PDM .........................................................................................40Functions in SIMATIC PDM ..............................................................................................................40Features of SIMATIC PDM Rev. 6.0, SP4 ............................................................................40Features of SIMATIC PDM Rev. 5.2, SP1 ............................................................................41Electronic Device Description (EDD) ....................................................................................41Configuring a new device .......................................................................................................41Quick Start Wizard via SIMATIC PDM ..........................................................................................41Linearization ...............................................................................................................................45Configuring a stillpipe application .........................................................................................47Changing parameter settings using SIMATIC PDM ...................................................................48Parameters accessed via pull-down menus ................................................................................48Echo Profile Utilities ........................................................................................................49Echo profile .......................................................................................................................50TVT Shaper .......................................................................................................................51Auto False Echo Suppression .....................................................................................52Echo Setup ........................................................................................................................54Maintenance ....................................................................................................................54Select Analog Output .....................................................................................................55Self Test .............................................................................................................................55Loop Test ...........................................................................................................................56Configuration Flag Reset ...............................................................................................56Master Reset ....................................................................................................................56Wear ...................................................................................................................................56HART Communication ....................................................................................................56Diagnostics .................................................................................................................................56Process Variables ...........................................................................................................57Trend ..................................................................................................................................57Device Status ...................................................................................................................58Update ................................................................................................................................58Security ........................................................................................................................................58Operating via AMS Device Manager ...........................................................................60Functions in AMS Device Manager ...............................................................................................60Features of AMS Device Manager .......................................................................................60Device Description (DD) ..........................................................................................................61Configuring a new device .......................................................................................................61Startup .........................................................................................................................................61Master Reset ....................................................................................................................62Pull-down menu access ..........................................................................................................62Device configuration ................................................................................................................62Quick Start Wizard via AMS Device Manager ..................................................................63Quick Start ........................................................................................................................63Linearization .....................................................................................................................64Using Linearization via the Quick Start wizard ........................................................64Changing parameter settings using AMS Device Manager ................................65Operation ...........................................................................................................................65Setup ..................................................................................................................................66Signal Processing ...........................................................................................................67
iiimmmmmTable of Content sLocal Display ....................................................................................................................69Maintenance and Diagnostics ........................................................................................................69Communication ....................................................................................................................................70Security .................................................................................................................................................70Device Diagnostics .............................................................................................................................71Process Variables ...........................................................................................................71Password Protection ................................................................................................................72User Manager utility .................................................................................................................72AMS Menu Structure ........................................................................................................................73Parameter Reference .....................................................................................................78Quick Start .................................................................................................................................. 78Setup ............................................................................................................................................ 79Device ................................................................................................................................79Sensor ...............................................................................................................................79Calibration .........................................................................................................................80Rate .....................................................................................................................................81Fail-safe .............................................................................................................................83Analog Output Scaling ...................................................................................................84Linearization .....................................................................................................................86Signal Processing ...........................................................................................................90Diagnostics ................................................................................................................................. 98Echo Profile .......................................................................................................................98Electronics Temperature ...............................................................................................98Service......................................................................................................................................... 99Master Reset ....................................................................................................................99Remaining Device Lifetime ...........................................................................................99Remaining Sensor Lifetime .........................................................................................102Service Schedule ..........................................................................................................105Calibration Schedule ....................................................................................................108Manufacture Date .........................................................................................................111Powered Hours ..............................................................................................................111Power-on Resets ...........................................................................................................111LCD Fast Mode ...............................................................................................................112LCD Contrast ...................................................................................................................112Memory Test ..................................................................................................................112Communication....................................................................................................................... 113Device Address ..............................................................................................................113Security..................................................................................................................................... 113Remote Access ..............................................................................................................113Local Access ..................................................................................................................114Language.................................................................................................................................. 114Appendix A: Alphabetical Parameter List ................................................................115Appendix B: Troubleshooting .....................................................................................117Communication Troubleshooting ..................................................................................................117Device Status Icons .........................................................................................................................118General Fault Codes .........................................................................................................................119Operation Troubleshooting .............................................................................................................122Appendix C: Maintenance ...........................................................................................125Unit Repair and Excluded Liability ................................................................................................125Replacing the antenna ...........................................................................................................125
ivmmmmmTable of Cont ent sAppendix D: Technical Reference .............................................................................126Principles of Operation ....................................................................................................................126Echo Processing ...............................................................................................................................126Process Intelligence ...............................................................................................................126Echo Selection .........................................................................................................................127Measurement Range .............................................................................................................131Measurement Response .......................................................................................................131Analog Output ....................................................................................................................................132Sensor Mode ............................................................................................................................133Current Output Function ........................................................................................................133Loss of Echo (LOE) ..................................................................................................................134Maximum Process Temperature Chart .......................................................................................135Flange Adapter versions of SITRANS LR250 ....................................................................135Process Pressure/Temperature derating curves .....................................................................136Horn Antenna or Wave Guide ..............................................................................................1371.5" and 2" Threaded Versions ....................................................................................13750A, 80A and 100A Flanged Versions: JIS 10 k ..................................................... 137DN50, DN80, DN100, and DN150 Flanged Versions: PN16 ..................................138DN50, DN80, DN100, and DN150 Flanged Versions: PN40 ..................................1382", 3", and 4" Flanged Versions: 150 lb .......................................................................1392", 3", and 4" Flanged Versions: 300 lb .......................................................................139Loop power .........................................................................................................................................140Typical Connection Drawing ................................................................................................140Allowable operating area of SITRANS LR250 ..................................................................140Startup Behavior .....................................................................................................................141Appendix E: Application Examples ............................................................................142Liquid resin in storage vessel, level measurement ................................................................. 142Horizontal vessel with volume measurement........................................................................... 143Application with Stillpipe................................................................................................................ 144Appendix F: HART Communications .........................................................................146SIMATIC PDM ...................................................................................................................................146HART Electronic Device Description (EDD) ................................................................................146HART Communicator 375 Menu Structure .................................................................................147HART Version .....................................................................................................................................149Burst Mode ...............................................................................................................................149HART Multidrop Mode ...........................................................................................................149Appendix G: ATEX Certificates ...................................................................................150ATEX Certificate SIRA 06ATEX2358X ...........................................................................................150ATEX Certificate SIRA 08ATEX1301X ...........................................................................................153Appendix H: Firmware Revision History ...................................................................156Glossary ..........................................................................................................................157Index ................................................................................................................................161LCD menu structure ......................................................................................................165
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 1mmmmmSITRANS LR250Safety NotesSpecial attention must be paid to warnings and notes highlighted from the rest of the text by grey boxes.1)Safety marking symbolsFCC ConformityUS Installations only: Federal Communications Commission (FCC) rules WARNING: relates to a caution symbol on the product, and means that failure to observe the necessary precautions can result in death, serious injury, and/or considerable material damage.WARNING1): means that failure to observe the necessary precautions can result in death, serious injury, and/or considerable material damage.Note: means important information about the product or that part of the operating manual.1) This symbol is used when there is no corresponding caution symbol on the product.In manual On product DescriptionEarth (ground) TerminalProtective Conductor Terminal(Label on product: yellow background.) WARNING: refer to accompanying documents (manual) for details.WARNING: Changes or modifications not expressly approved by Siemens Milltronics could void the user’s authority to operate the equipment.Notes:• This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.• This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference to radio communications, in which case the user will be required to correct the interference at his own expense.
Page 2 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSITRANS LR250CE Electromagnetic Compatibility (EMC) ConformityThis equipment has been tested and found to comply with the following EMC Standards:The ManualThis manual will help you set up your SITRANS LR250 for optimum performance. We always welcome suggestions and comments about manual content, design, and accessibility. Please direct your comments to techpubs.smpi@siemens.com. For other Siemens Milltronics level measurement manuals, go to:www.siemens.com/level and look under Level Measurement.EMC Standard TitleCISPR 11:2004/EN 55011:1998+A1:1999&A2:2002, CLASS B Limits and methods of measurements of radio disturbance characteristics of industrial, scientific, and medical (ISM) radio-frequency equipment. EN 61326:1997+A1:1998+A2:2001+A3:2003 (IEC 61326:2002) Electrical Equipment for Measurement, Control and Laboratory Use – Electromagnetic Compatibility.EN61000-4-2:2001 Electromagnetic Compatibility (EMC) Part 4-2:Testing and measurement techniques – Electrostatic discharge immunity test. EN61000-4-3:2002 Electromagnetic Compatibility (EMC) Part 4-3: Testing and measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test.EN61000-4-4:2004 Electromagnetic Compatibility (EMC) Part 4-4: Testing and measurement techniques – Electrical fast transient/burst immunity test.EN61000-4-5:2001 Electromagnetic Compatibility (EMC) Part 4-5: Testing and measurement techniques – Surge immunity test.EN61000-4-6:2004 Electromagnetic Compatibility (EMC) Part 4-6: Testing and measurement techniques – Immunity to conducted disturbances, induced by radio-frequency fields. EN61000-4-8:2001 Electromagnetic Compatibility (EMC) Part 4-8:Testing and measurement techniques – Power frequency magnetic field immunity test. Notes:• This product is intended for use in industrial areas. Operation of this equipment in a residential area may cause interference to several frequency based communications.• Please follow the installation and operating procedures for a quick, trouble-free installation and to ensure the maximum accuracy and reliability of your SITRANS LR250.• This manual applies to the SITRANS LR250 (HART) only.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 3mmmmmSITRANS LR250Application ExamplesThe application examples used in this manual illustrate typical installations using SITRANS LR250 (see Appendix E: Application Examples on page 142). Because there is often a range of ways to approach an application, other configurations may also apply. In all examples, substitute your own application details. If the examples do not apply to your application, check the applicable parameter reference for the available options. Technical SupportSupport is available 24 hours a day. To find your local Siemens Automation Office address, phone number and fax number go to:www.siemens.com/automation/partner• Click on the tab Contacts by Product then drill down to find your product group (+Process Automation > +Process Instrumentation > +Level Measuring Instruments).• Select the team Technical Support. Click on Next.• Click on the appropriate continent, then select the country followed by the city. Click on Next.For on-line technical support go to:www.siemens.com/automation/support-request • Enter the device name (SITRANS LR250) or order number, then click on Search, and select the appropriate product type. Click on Next.• You will be prompted to enter a keyword describing your issue. Then either browse the relevant documentation, or click on Next to email a detailed description of your issue to Siemens Technical Support staff.Siemens A&D Technical Support Center: phone +49 180 50 50 222fax +49 180 50 50 223Abbreviations and IdentificationsShort form Long Form Description UnitsCE / FM / CSA Conformité Européenne / Factory Mutual / Canadian Standards Association safety approvalCiInternal capacitance FD/A Digital to analogDCS Distributed Control System control room apparatusdK dielectric constantEDD Electronic Device Description
Page 4 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSITRANS LR250HART Highway Addressable Remote TransducerIiInput current mAIoOutput current mAIS Intrinsically Safe safety approvalLiInternal inductance mHmH milliHenry 10-3 HµF microFarad 10-6 Fµsmicrosecond 10-6 sPED Pressure Equipment Directive safety approvalpF pico Farads 10-12 Fppm parts per millionPV Primary Variable measured valueSV Secondary Variable equivalent valueTB Transducer BlockTVT Time Varying Threshold sensitivity thresholdUiInput voltage VUoOutput voltage VShort form Long Form (continued) Description Units
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 5mmmmmSITRANS LR250SITRANS LR250 OverviewSITRANS LR250 is a 2-wire 25 GHz pulse radar level transmitter for continuous monitoring of liquids and slurries in storage vessels including high pressure and high temperature, to a range of 20 meters (66 feet). It is ideal for small vessels and low dielectric media.The instrument consists of an electronic component coupled to a horn antenna and either a threaded or flange type process connection. SITRANS LR250 supports HART1) communication protocol, and the following device management software options: • SIMATIC PDM • AMS Device ManagerSignals are processed using Process Intelligence which has been field-proven in over 1,000,000 applications worldwide (ultrasonic and radar).ProgrammingSITRANS LR250 is very easy to install and configure via a graphical local user interface (LUI). You can modify the built in parameters either locally via the Siemens infrared handheld programmer, or from a remote location using one of the following options:• SIMATIC PDM • AMS Device ManagerApplications• liquids and slurries• bulk storage vessels• simple process vessels1) HART® is a registered trademark of the HART Communication Foundation
Page 6 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSITRANS LR250Approvals and CertificatesSITRANS LR250 is available with General Purpose approval, or for hazardous areas. In all cases, check the nameplate on your instrument, and confirm the approval rating.Process Connections A wide range of process connections and antenna options is available to suit virtually any vessel configuration..Note: For further details see Approvals on page 10.Application TypeLR250 Version Approval Rating Valid for: Wiring Non-hazardousGeneral Purpose CSAUS/C, FM, CE N. America, EuropeSee page 24HazardousIntrinsically Safe (barrier required)ATEX II 1 G, EEx ia IIC T4ATEX II 1 tD, EEx tD A20 IP67 T90 oCEurope See page 26IECEx SIR 05.0031X, Ex ia IIC T4Ex tD A20 IP67 T90 oCInternationalANZEX Ex ia IIC T4 (Tamb = –40 to +80 oC) IP67 AustraliaFM/CSA: (barrier required)Class I, Div. 1, Groups A, B, C, D Class II, Div. 1, Groups E, F, GClass III T4US/CanadaBR-Ex ia IIC T4 IP67 BrazilNon-incendiveFM/CSA: Class I, Div. 2, Groups A, B, C, D T5Class II/IIIUS/Canada See page 28FlameproofATEX II 1/2 G, Ex dmia IIC T4ATEX II 1D, 1/2D, 2D, Ex tD A20 IP67 Txx oCIECEx SIR 08.0107, Ex dmia IIC T4tD A20 IP67 Txx oCEurope See page 28Increased Safety ATEX II 1/2 G, Ex emia IIC T4ATEX II 1D, 1/2D, 2D, Ex tD A20 IP67 Txx oCIECEx SIR 08.0107, Ex emia IIC T4tD A20 IP67 Txx oCEurope See page 29Explosion-proofFM/CSA: Class I, Div. 1, Groups A, B, C, D Class II, Div. 1, Groups E, F, GClass III T4US/Canada See page 29
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 7mmmmmSpecificationsSpecificationsPower• Maximum 30 V DC• 4 to 20 mA• Max. startup current see Startup Behavior on page 141PerformanceReference operating conditions according to IEC 60770-1• ambient temperature +15 to +25 °C (+59 to +77 °F)• humidity 45% to 75% relative humidity• ambient pressure 860 to 1060 mbar g (86000 to 106000 N/m2 g)Measurement Accuracy (measured in accordance with IEC 60770-1)• Maximum measured error = 5 mm (0.2") (including hysteresis and non-repeatability)Frequency K-bandMax. measurement range1) 20 m (65.6 ft) except for 1.5" horn which has 10 m (32.8 ft)Min. detectable distance 50 mm (1.97") from end of horn2)Update time3) minimum 1 second, depending on settings for Response Rate (2.4.1.) and LCD Fast Mode (4.9.)Influence of ambient temperature < 0.003%/K (average over full temperature range, referenced to maximum range)Note: Siemens Milltronics makes every attempt to ensure the accuracy of these specifications but reserves the right to change them at any time. General PurposeNon-incendive (FM/CSA US/Canada only)Intrinsically SafeNominal 24 V DC at 550 Ohm FlameproofIncreased SafetyExplosion-proof (FM/CSA US/Canada only)Nominal 24 V DC at 250 Ohm 1) From sensor reference point: see Dimensions on page 12 and Flanged Horn with extension on page 14.2) Minimum range is horn length + 50 mm. See Dimensions on page 12.3) Reference conditions: Response Rate (2.4.1.) set to FAST, LCD Fast Mode (4.9.) set to ON.
Page 8 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSpecificationsDielectric constant of material measured• dK > 1.6 (horn and application dependent1))Memory:• non-volatile EEPROM• no battery required.InterfaceAnalog output • signal range 4 to 20 mA (± 0.02 mA accuracy) upper limit 20 to 23 mA adjustable• fail signal 3.6 mA to 23 mA (see Fail-safe Mode on page 134 for more details)Communication: HART• Load 230 to 600 Ω, 230 to 500 Ω when connecting a couplingmodule• Max. Line Length multi-wire: ≤ 1500 m (4921 ft)• Protocol HART, Version 5.1Configuration• remote Siemens SIMATIC PDM or AMS Device Manager (PC)• local Siemens infrared handheld programmer, or HART handheld communicatorDisplay (local)2) graphic LCD, with bar graph representing levelMechanicalProcess Connections: • threaded connection 1.5” or 2" NPT (ASME B1.20.1), BSPT (EN 10226-1)3) or G (BS EN ISO 228-1) • flange connection (flat-face) 2", 3", 4" (ASME 150 lb, 300 lb) 50, 80, 100 mm (PN 16, PN 40) 50A, 80A, 100A (JIS 10K) materials 316 L /1.4404 or 316 L /1.4435 stainless steel, optional Alloy N06022/2.4602• flange connection (raised face) 50, 80, 100 mm (PN 10/16, PN 25/40) 150 mm (PN 10/16,PN 25/40) per EN 1092-1 B1 materials 1.4404 or 1.4435 stainless steel, optional Alloy N06022/2.46021) For 1.5" (40 mm) horn the dK is limited to 3 unless a stillpipe is used.2) Display quality will be degraded in temperatures below –25 °C (–13 °F) and above +65 °C (+149 °F).3) For use with 1.5" (40 mm) horn antennas only.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 9mmmmmSpecificationsAntenna:• horn standard 1.5" (40 mm), 2" (50 mm), 3" (80 mm), and 4" (100 mm) horn, optional 100 mm (4") horn extension• materials 316L stainless steel with PTFE emitteroptional Alloy N06022/2.4602 (C-22) with PTFE emitterEnclosure • construction aluminum, polyester powder-coated• conduit entry 2 x M20x1.5, or 2 x ½" NPT• ingress protection Type 4X/NEMA 4X, Type 6/NEMA 6, IP 67, IP68 (see note below)Weight (excluding extensions)• 1.5" threaded connection with 1.5" horn antenna approx. 5.1kg (11.2 lb) • 2" threaded connection with 2" horn antenna approx. 5.5 kg(12.1 lb) • DN 50/PN 16 or 2" 150 lb flat-face flange with 2" horn antenna approx. 8 kg (17.6 lb)• DN 100/PN 40 or 4" ASME 300 lb flat-face flange with 4" horn antennaapprox. 17.4 kg (38.3 lb)• DN 50/PN 16 raised-face flange with 2" horn antenna approx. 6 kg (13.2 lb)• DN 100/PN 40 raised-face flange with 4" horn antenna approx. 11.3 kg (24.9 lb)Environmental• location indoor/ outdoor• altitude 5000 m (16,404 ft) max.• ambient temperature −40 to +80 °C (−40 to +176 °F)• relative humidity suitable for outdoor Type 4X/NEMA 4X, Type 6/NEMA 6, IP67, IP68 enclosure (see note above)• installation category I• pollution degree 4Notes: • Check Approvals on page 10, for the specific configuration you are about to use or install.• Use appropriate conduit seals to maintain IP or NEMA rating.
Page 10 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSpecificationsProcess•temperature1) at process connection - with FKM O-ring −40 to +200 °C (−40 to +392 °F) - with FFKM O-ring −20 to +200 °C (−4 to +392 °F)• pressure (vessel)1Refer to Process Pressure/Temperature derating curves on page 136.Approvals • General CSAUS/C, FM, CE• Radio Europe (R&TTE), FCC, Industry Canada• Hazardous Intrinsically Safe2) (Europe) ATEX II 1G, EEx ia IIC T4ATEX II 3G, Ex na II T4ATEX II 1D, EEx tD A20 IP67 T90 °C (International) IECEx SIR 05.0031X, Ex ia IIC T4, EX tD A20 IP67 T90 °C (US/Canada) FM/CSA: (barrier required) Class I, Div. 1, Groups A, B, C, D Class II, Div. 1, Groups E, F, G Class III T4 (Brazil) BR-Ex ia IIC T4 IP67 Non-incendive3) (US/Canada) FM/CSA Class I, Div. 2, Groups A, B, C, D T51) The specifications apply to the standard horn only. The maximum temperature is dependent on the process connection, antenna materials, and vessel pressure. For more detail, or for other configurations, see Maximum Process Temperature Chart on page 135, and Process Pressure/Temperature derating curves on page 136.Note: The device nameplate lists the approvals that apply to your device.2) See Intrinsically Safe wiring on page 26 for more details.3) See Non-incendive wiring (US/Canada only) on page 28 for more details.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 11mmmmmSpecifications• Hazardous (continued)Flameproof (Europe)1) ATEX II 1/2 G, Ex dmia IIC T4ATEX II 1D, 1/2D, 2D, Ex tD A20 IP67 Txx oCIECEx SIR 08.0107, Ex dmia IIC T4tD A20 IP67 Txx oCIncreased Safety (Europe)2) ATEX II 1/2 G, Ex emia IIC T4ATEX II 1D, 1/2D, 2D, Ex tD A20 IP67 Txx oCIECEx SIR 08.0107, Ex emia IIC T4tD A20 IP67 Txx oC Explosion proof (US/Canada)3) FM/CSA: (barrier not required) Class I, Div. 1, Groups A, B, C, D Class II, Div. 1, Groups E, F, G Class III T4• Marine Lloyd’s Register of Shipping ABS Type ApprovalProgrammer (infrared keypad)Siemens Milltronics Infrared IS (Intrinsically Safe) Hand Programmer for hazardous and all other locations.• approval ATEX II 1 G, EEx ia IIC T4, certificate SIRA 01ATEX2147 FM/CSA: Class I, Div. 1, Groups A, B, C, D• ambient temperature −20 to 40 °C (−5 to 104 °F)• interface proprietary infrared pulse signal• power 3 V lithium battery • weight 150 g (0.3 lb)• color black• Part Number 7ML1930-1BK1) See Flameproof wiring on page 28.2) See Increased safety wiring on page 29.3) See Explosion-proof wiring (US/Canada only) on page 29.Notes: • Battery is non-replaceable with a lifetime expectancy of 10 years in normal use. • To estimate the lifetime expectancy, check the nameplate on the back for the serial number. The first six numbers show the production date (mmddyy), for example, serial number 032608101V.
Page 12 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSpecificationsDimensionsThreaded Horn Antenna with extensionSee table under Threaded Horn dimensions on page 13 for horn height to sensor reference point (A, B, C, or D).Notes: • Process temperature and pressure capabilities are dependent upon information on the process device tag. Reference drawing listed on the Tag is available on the product page of our website at www.siemens.com/LR250, under More Info/Installation drawings/Level Measurement/Installation Drawings/LR250. Additional information on process connections is available on the Installation Drawings page under Process Connection Diagrams.• Signal amplitude increases with horn diameter, so use the largest practical size.• Optional extensions can be installed below the threads.threaded coverenclosure/electronics196 mm (7.7")154 mm (6.1")167 mm (6.6")1/2" NPT cable entry (or alternatively, M20 cable gland)sensor ref. pointretaining collar90 mm (3.5")159 mm (6.26")50 mm (2.0")horn28 mm (1.1") optional100 mm (4.0 ")horn extensionprocessdevice taghornO.D.ABCD
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 13mmmmmSpecificationsThreaded Horn dimensionsThreaded Connection MarkingsThreaded connection markings are found on the flat face/faces of the process connection.Serial number:a unique number allotted to each process connection, including the date of manufacture (MMDDYY) followed by a number from 001 to 999.Nominal Horn Size Horn O.D. Horn Height to sensor reference pointa)a) Height from bottom of horn to sensor reference point as shown: see Threaded Horn Antenna with extension on page 12.Beam Angleb)b) – 3dB in the direction of the polarization axis (see Polarization reference point on page 22 for an illustration).Measurement Range40 mm (1.5") 39.8 mm (1.57”) A135 mm (5.3") 19 degrees 10 m (32.8 ft)50 mm (2”) 47.8 mm (1.88”) B166 mm (6.55”) 15 degrees20 m (65.6 ft)80 mm (3”) 74.8 mm (2.94”) C199 mm (7.85”) 10 degrees100 mm (4”) 94.8 mm (3.73”) D254 mm (10”) 8 degrees
Page 14 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSpecificationsFlanged Horn with extensionNotes: • Process temperature and pressure capabilities are dependent upon information on the process device tag. Reference drawing listed on the Tag is available on the product page of our website at www.siemens.com/LR250, under More Info/Installation drawings/Level Measurement/Installation Drawings/LR250. Additional information on process connections is available on the Installation Drawings page under Process Connection Diagrams.• Signal amplitude increases with horn diameter, so use the largest practical size.• Optional extensions can be installed between the flange and the antenna.enclosure/electronicsname-plateflangehornsensor reference pointretaining collarprocess device tag227 mm (8.94")horn O.D.135.5 mm (5.33")154 mm (6.1")50 mm (2.0")threaded cover1/2" NPT cable entry (or alternatively, M20 cable gland)168.5 mm (6.63")223.5mm (8.8")50 mm (2") nom.80 mm (3") nom.100 mm (4") nom.167 mm (6.6")90 mm (3.5")190 mm (7.48")optional100 mm (4.0 ")horn extension
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 15mmmmmSpecificationsFlanged Horn dimensionsFor flange dimensions see Raised-Face Flange per EN 1092-1 on page 16 or Flat-Face Flange on page 17 Nominal Horn Size Horn O.D. Height to sensor reference pointa)a) Height from bottom of horn to sensor reference point as shown: see Flanged Horn dimensions on page 15.Beam Angleb)b) – 3dB in the direction of the polarization axis (see Polarization reference point on page 22 for an illustration).Measurement Range50 mm (2”) 47.8 mm (1.88”) 135.5 mm (5.33”) 15 degrees20 m (65.6 ft)80 mm (3”) 74.8 mm (2.94”) 168.5 mm (6.63”) 10 degrees100 mm (4”) 94.8 mm (3.73”) 223.5 mm (8.8”) 8 degrees
Page 16 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSpecificationsRaised-Face Flange per EN 1092-1Raised-Face Flange DimensionsPipe sizeFlange bolt hole pattern Flange O.D. (mm)Bolt Hole Circle Ø (mm)Bolt Hole Ø (mm)No. of BoltsAngle of adjacent bolt holesFacingØ (mm)Thick-ness (mm)DN 50 PN 10/PN 16 165 125 18 4 90 102 18DN 80 PN 10/PN 16 200 160 18 8 45 138 20DN 100 PN 10/PN 16 220 180 18 8 45 158 20DN 150 PN 10/PN 16 285 240 22 8 45 212 22DN 50 PN 25/PN 40 165 160 18 4 90 138 20DN 80 PN 25/PN 40 200 160 18 8 45 138 24DN 100 PN 25/PN 40 235 190 22 8 45 162 24DN 150 PN 25/PN 40 300 250 26 8 45 218 28process sidewaveguide mounting hole angle of adjacent bolt holesflange O.D.bolt hole circlebolt hole circle dia.thicknessFacing height= 3 mm Facing dia.bolt hole
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 17mmmmmSpecificationsRaised-Face Flange markingsThe flange markings are located around the outside edge of the flange.Serial number: a unique number allotted to each flange, including the date of manufacture (MMDDYY) followed by a number from 001 to 999.Flange series: the Siemens Milltronics drawing identification.Heat code: a flange material batch code identification.Flat-Face FlangeSee Flat-Face Flange Dimensions on page 18 for details.Blind Flange Markings(Optional Manufacturer’s Logo [optional]; Flange Standard; Nominal Size; Material; Heat Code)Machining Identification Welded Assembly Identificationa)a) When flange material is Alloy N06022/2.4602, additional material and heat code identification is provided.Serial no. Logo Flange seriesFlange seriesHeatCode no. FacingManufacturer’s logo; EN 1092-1 05 ’B1’; ’DN50’ ’PN16’ ’1.4404 or 1.4435’ A1B2C3 mmddyyxxx XXXXX XXXXX A1B2C3 RFprocess sideenclosure mounting hole bolt holeflange O.D.bolt hole circlethickness
Page 18 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSpecificationsFlat-Face Flange DimensionsFlat-Face Flange markingsFlange markings located around the outside edge of the flat-face flange identify the flange assembly on which the device is mounted. Serial number: a unique number allotted to each flange, including the date of manufacture (MMDDYY) followed by a number from 001 to 999.Flange series: the Siemens Milltronics drawing identification.Nominal size: the flange size followed by the hole pattern for a particular flange class. For example,– a 2 inch ANSI B 16.5 150 lb class flange (North America)– a DN 80 EN 1092-1 PN 16 class flange (Europe).Material: the basic flange material (AISI or EU material designation). North American material codes are followed by European ones. For example, material designation 316L/1.4404.Heat code: a flange material batch code identification.Flange sizea)a) A 2" flange is designed to fit a 2" pipe: for actual flange dimensions see Flange O.D.Flange Class Flange O.D. Bolt Hole Circle ØBolt Hole ØNo. of Bolt Holes Thickness2” ASME 150 lb 6.0” 4.75” 0.75” 4 0.88"3” ASME 150 lb 7.5” 6.0” 0.75” 4 0.96"4” ASME 150 lb 9.0” 7.50” 0.75” 8 1.25"2” ASME 300 lb 6.50” 5.00” 0.75” 8 1.12"3” ASME 300 lb 8.25” 6.62” 0.88” 8 1.38"4” ASME 300 lb 10.00” 7.88” 0.88” 8 1.50"DN 50 EN PN 16 165 mm 125 mm 18 mm 4 24.4 mmDN 80 EN PN 16 200 mm 160 mm 18 mm 8 31.8 mmDN 100 EN PN 16 220 mm 180 mm 18 mm 8 31.8 mmDN 50 EN PN 40 165 mm 125 mm 18 mm 4 25.4 mmDN 80 EN PN 40 200 mm 160 mm 18 mm 8 31.8 mmDN 100 EN PN 40 235 mm 190 mm 22 mm 8 38.1 mm 50A JIS 10K 155 mm 120 mm 19 mm 4 23.8 mm80A JIS 10K 185 mm 150 mm 19 mm 8 24.4 mm100A JIS 10K 210 mm 175 mm 19 mm 8 28.5 mmFlat Face Flange Identification Welded Assembly IdentificationSerial No. Logo Flange Series Material Heat CodeFlange SeriesHeat Code No. Series Nominal SizeMMDDYYXXX 25556 2 150 316L/ 1.4404 or 316L/ 1.4435 A1B2C3 25546 A1B2C3DN 80 PN 16
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 19mmmmmSpecificationsNotes
Page 20 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmInstallationInstallation1)WARNINGS: • Installation shall only be performed by qualified personnel and in accordance with local governing regulations.• SITRANS LR250 is to be used only in the manner outlined in this manual, otherwise protection provided by the device may be impaired.• Handle the device using the enclosure not the device tag, to avoid damage.• Never attempt to loosen, remove, or disassemble process connection or instrument housing while vessel contents are under pressure.• This product is designated as a Pressure Accessory per Directive 97/23/EC and is not intended for use as a safety device.• Materials of construction are chosen based on their chemical compatibility (or inertness) for general purposes. For exposure to specific environments, check with chemical compatibility charts before installing.• The user is responsible for the selection of bolting and gasket materials which will fall within the limits of the flange and its intended use and which are suitable for the service conditions.• Improper installation may result in loss of process pressure.Notes:• For European Union and member countries, installation must be according to ETSI EN 302372.• Refer to the device nameplate for approval information.• The Process Device Tag shall remain with the process pressure boundary assembly1. In the event the instrument package is replaced, the Process Device Tag shall be transferred to the replacement unit.• SITRANS LR250 units are hydrostatically tested, meeting or exceeding the requirements of the ASME Boiler and Pressure Vessel Code and the European Pressure Equipment Directive.• The serial numbers stamped in each process connection body provide a unique identification number indicating date of manufacture.Example: MMDDYY – XXX (where MM = month, DD = day, YY = year, and XXX= sequential unit produced) Further markings (space permitting) indicate flange configuration, size, pressure class, material, and material heat code.1) The process pressure boundary assembly comprises the components that act as a barrier against pressure loss from the process vessel: that is, the combination of process connection body and emitter, but normally excluding the electrical enclosure.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 21mmmmmInstallationMounting locationNozzle design• The end of the horn must protrude a minimum of 10 mm (0.4”) to avoid false echoes being reflected from the nozzle.• An antenna extension: (100 mm/ 3.93") is available.Nozzle location• Keep emission cone free of interference from ladders, pipes, I-beams or filling streams. • Avoid central locations on tall, narrow vessels.Notes: • Correct location is key to a successful application.• Avoid reflective interference from vessel walls and obstructions by following the guidelines belowNotes: • Beam width depends on horn size: see below. • For details on avoiding false echoes, see Auto False Echo Suppression (2.8.7.1.) on page 130.Min. clearance: 10 mm (0.4") beam angle:1.5" horn = 19°2" horn = 15°3" horn = 10°4" horn = 8°preferred undesirable19°emission cone
Page 22 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmInstallationNozzle location (continued)• Provide easy access for viewing the display and programming via the hand programmer.• Provide an environment suitable to the housing rating and materials of construction.• Provide a sunshield if the instrument will be mounted in direct sunlight.Orientation in a vessel with obstructionsPolarization reference point Mounting on a Stillpipe or Bypass PipeA stillpipe or bypass is used for products with a low dK1), or when vortex or extremely turbulent conditions exist. It can also be used to provide optimum signal conditions on foaming materials.Stillpipe or Bypass Pipe requirements• The pipe diameter must be matched with the horn size. Use the largest horn size that will fit the stillpipe/bypass pipe (see Threaded Horn dimensions on page 13 or Flanged Horn dimensions on page 15).• Suitable pipe diameters: 40 mm (1.5") to 100 mm (4”). Not recommended: (152.4 mm/ 6" or 203.2 mm/ 8")• One continuous length of metallic pipe is preferred, without joints2). 1) See Dielectric constant of material measured on page 8.2) Bad joints create reflections.ambient temperature –40 °C to 80 °C(–40 °F to 176 °F)process temperature with FKM O-ring:–40 to +200 °C (–40 to +392 °F) with FFKM O-ring:–20 to +200 °C (–4 to +392 °F)polarization reference pointpolarization axisdisplayFor best results on a vessel with obstructions, or a stillpipe with openings, orient the front or back of the device toward the obstructions (see Device orientation on page 23 for an illustration).
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 23mmmmmInstallation• Joints (if unavoidable) must be machined to ± 0.25 mm (± 0.010”) and must have a welded connecting sleeve on the outside.• Bypass vent required at the upper end of the bypass1) Device orientationInstallation InstructionsThreaded Version1. Before inserting the device into its mounting connection, check to ensure the threads are matching, to avoid damaging them. 2. Simply screw the device into the process connection, and hand tighten, or use a wrench. A torque of 40 N m (30 ft.lbs) is recommendedFlanged VersionSee Flanged Horn with extension on page 14, Raised-Face Flange per EN 1092-1 on page 16, and Flat-Face Flange on page 17, for dimensions.1) To equalize pressure and keep the liquid level in the bypass constant with the liquid level in the vessel.WARNING: For pressure applications, it will be necessary to use PTFE tape or other appropriate thread sealing compound, and to tighten the process connection beyond hand-tight.Note: There is no limit to the number of times a device can be rotated without damage.optimum diameter80 mm (3”) align front or back of device with ventsalign front or back of device with stillpipe slotsventStillpipe InstallationslotsBypass Installation
Page 24 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmWiringWiringPower Connecting SITRANS LR2501) 2)1) Strip the cable jacket for approximately 70 mm (2.75") from the end of the cable, and thread the wires through the gland2).2) Connect the wires to the terminals as shown: the polarity is identified on the terminal block.3) Ground the instrument according to local regulations.4) Tighten the gland to form a good seal.WARNINGS:The DC input terminals shall be supplied from a source providing electrical isolation between the input and output, in order to meet the applicable safety requirements of IEC 61010-1.All field wiring must have insulation suitable for rated voltages. WARNINGS: • Check the nameplate on your instrument, to verify the approval rating.• Use appropriate conduit seals to maintain IP or NEMA rating.•See Wiring setups for hazardous area installations on page 25.Notes: • Use twisted pair cable: AWG 22 to 14 (0.34 mm2 to 2.5 mm2).• Separate cables and conduits may be required to conform to standard instrumentation wiring practices or electrical codes.1) May be shipped with the device.2) If cable is routed through conduit, use only approved suitable-size hubs for waterproof applications.Use a 2 mm Allen key to loosen the lid-lock set screw.optional cable gland1) 2) (or NPT cable entry2))plug (IP 68)cable shield(if used)
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 25mmmmmWiringConnecting HART1)2)Wiring setups for hazardous area installationsThere are five wiring options for hazardous area installations:•Intrinsically Safe wiring on page 26•Non-incendive wiring (US/Canada only) on page 28•Flameproof wiring on page 28•Increased safety wiring on page 29•Explosion-proof wiring (US/Canada only) on page 29In all cases, check the nameplate on your instrument, and confirm the approval rating.1) Depending on the system design, the power supply may be separate from the PLC, or integral to it.2) HART resistance (total loop resistance, that is, cable resistance plus 250 Ohm [resistor]) must be limited according to the allowable operating area as shown in either Curve 1 (General Purpose, Intrinsically Safe, Non-incendive) on page 140 or Curve 2 (Flameproof, Increased Safety, Explosion-proof) on page 141.active PLCHART modemSITRANS LR250power supply (1)Typical PLC/mA configuration with HARTR= 250 Ω (2)HART communicator
Page 26 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmWiring1. Intrinsically Safe wiring• For power demands see Curve 1 (General Purpose, Intrinsically Safe, Non-incendive) on page 140. • For wiring requirements: follow local regulations. • Approved dust-tight and water-tight conduit seals are required for outdoor NEMA 4X / type 4X / NEMA 6, IP67, IP68 locations.• Refer to Instructions specific to hazardous area installations on page 30.• Recommended intrinsically safe barriers are listed under Passive Shunt Diode Barriers on page 27 and Active barriers (repeating barriers) on page 27.Note: Selecting a suitable PLC input module, power supply, or barrier requires knowledge about Intrinsic Safety and the application. It is the responsibility of the installer to ensure that the intrinsically safe installation complies with both the apparatus approval requirements and the relevant national code of practice.WARNING: Possible Static Hazard, Do Not Rub Or Clean On Site.Ii = 120 mAUi = 30VLi = 0.1mHPi = 0.8WCi = 15nFHARTII1DIP68TxxII 1 G EEx ia IIC T403ATEX2142XIECEx SIR 05.0031XEx ia IIC T4SIRASITRANS LR 250Made in CanadaSiemens Milltronics Process Instruments Inc., Peterborough7ML1234-56789-0ABC-DEncl.: NEMA / TYPE 4X, 6, IP67, IP68Amb.Temp.: – 40 °C to 80 °CPower Rating: 24V Max., 4 - 20mANom., 30 VSerial No: GYZ / S1034567The ATEX certificate listed on the nameplate canbe downloaded from the product page of our website at: www.siemens.com/LR250.See also ATEX Certificate SIRA 06ATEX2358X on page 150 The IECEx certificate listed on the nameplate can be viewed on the IECEx website. Go to: http://iecex.iec.ch and click on Ex Equipment Certificates of Conformity then enter the certificate number IECEx SIR 05.0031X.WARNING: Possible Static Hazard, Do Not Rub Or Clean On Site.Exia per drawing: 23650653Class I, Div1,Group A,B,C,DClass IIIClass II, Div1,Group GCANADA: 267P - LR 250HARTRFCCID:NJA-LR250Pmax = 0.8 WCi=15nFTemp.Code:T4Vmax = 30VLi=0.1mHImax = 120mASITRANS LR 250Made in CanadaSiemens Milltronics Process Instruments Inc., Peterborough7ML1234-56789-0ABC-DEncl.: NEMA / TYPE 4X, 6, IP67, IP68Amb.Temp.: – 40 °C to 80 °CPower Rating: 24V Max., 4 - 20mANom., 30 VSerial No: GYZ / S1034567The FM/CSA Intrinsically Safe connection drawing number 23650653 can be downloaded from the product page of our website at: www.siemens.com/LR250.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 27mmmmmWiringPassive Shunt Diode Barriers How to select a passive barrier for SITRANS LR250To make sure that the barrier safety description is suitable for the LR250 Intrinsically Safe (IS) input parameters, carry out the following calculations:Re-e = max. end-to-end resistance of the barrierRloop = loop resistance (total of cable resistance plus any additional series resistance, for example, PLC inputs and/or displays)Vbarrier = value of any non-linear voltage drops due to the barrier1) Determine the value for Re-e from the data sheet.2) Calculate the total value for Rloop. 3) Calculate Rworking = Re-e + Rloop.4) Determine the value of Vbarrier from the barrier data sheet (for example, voltage drops due to diodes). 5) Calculate Vworking = Vsupply – Vbarrier.Use the values for Vworking and Rworking to confirm that operation is within the shaded area of the graph Curve 1 (General Purpose, Intrinsically Safe, Non-incen-dive) on page 140.Active barriers (repeating barriers)Note: A well regulated supply voltage is required.Manufacturer Part NumberMTL 787SP+ (Dual Channel)MTL 7787P+ (Dual Channel)Stahl 9001/01-280-100-10 (Single Channel)Stahl 9002/01-280-110-10 (Dual Channel)Manufacturer Part NumberMTL 706MTL 7206Siemens SITRANS I 7NG4122Stahl 9001/51-280-110-14MTL E02009MTL E02010
Page 28 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmWiring2. Non-incendive wiring (US/Canada only)• For power demands see Curve 1 (General Purpose, Intrinsically Safe, Non-incendive) on page 140. 3. Flameproof wiring• For power demands see Curve 2 (Flameproof, Increased Safety, Explosion-proof) on page 141. • For wiring requirements follow local regulations.• See also Instructions specific to hazardous area installations on page 30 and the ATEX certificate listed above.Class I, Div. 2,Group A, B, C, DTemp. Code: T5This device complies with Part 15 of the FCC Rules.Operation is subject to the following two conditions1)This device may not cause harmful interference and2)This device must accept any interference received,including interference that may cause undesired operationCANADA: 267P - LR 250FCC ID: NJA - LR 25026 Ghz HARTRSITRANS LR 250Made in CanadaSiemens Milltronics Process Instruments Inc., Peterborough7ML1234-56789-0ABC-DEncl.: NEMA / TYPE 4X, 6, IP67, IP68Amb.Temp.: – 40 °C to 80 °CPower Rating: 24V Max., 4 - 20mANom., 30 VSerial No: GYZ / S1034567Class I, Div 2, Group A,B,C,DFM/CSA Class 1, Div 2 connection drawing number 23650673can be downloaded from the product page of our website at: www.siemens.com/LR250.The ATEX certificate can be downloaded from the product page of our website at: www.siemens.com/LR250.See also ATEX Certificate SIRA 08ATEX1301X on page 153 The IECEx certificate listed on the nameplate can be viewed on the IECEx website. Go to: http://iecex.iec.ch and click on Ex Equipment Certificates of Conformity then enter the certificate number IECEx SIR 08.0107X. NAMEPLATE TO BE UPDATED
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 29mmmmmWiring4. Increased safety wiring• For power demands see Curve 2 (Flameproof, Increased Safety, Explosion-proof) on page 141. • For wiring requirements follow local regulations.• See also Instructions specific to hazardous area installations on page 30 and the ATEX certificate listed above.5. Explosion-proof wiring (US/Canada only)• For power demands see Curve 2 (Flameproof, Increased Safety, Explosion-proof) on page 141. The ATEX certificate can be downloaded from the product page of our website at: www.siemens.com/LR250.See also ATEX Certificate SIRA 08ATEX1301X on page 153 The IECEx certificate listed on the nameplate can be viewed on the IECEx website. Go to: http://iecex.iec.ch and click on Ex Equipment Certificates of Conformity then enter the certificate number IECEx SIR 08.0107X. NAMEPLATE TO BE UPDATEDFM/CSA Explosion Proof connection drawing number A5E02257843 can be downloaded from the product page of our website at: www.siemens.com/LR250.NAMEPLATE TO BE UPDATED
Page 30 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmWiringInstructions specific to hazardous area installations (Reference European ATEX Directive 94/9/EC, Annex II, 1/0/6)The following instructions apply to equipment covered by certificate number SIRA 06ATEX2358X and SIRA 08ATEX1301X.1) For use and assembly, refer to the main instructions.2) The equipment is certified for use as Category 1GD equipment.3) The equipment may be used with flammable gases and vapors with apparatus group IIC, IIB and IIA and temperature classes T1, T2, T3 and T4.4) The equipment has a degree of ingress protection of IP67 and a temperature class of T90°C and may be used with flammable dusts.5) The equipment is certified for use in an ambient temperature range of –40 °C to 80 °C.6) The equipment has not been assessed as a safety related device (as referred to by Directive 94/9/EC Annex II, clause 1.5).7) Installation and inspection of this equipment shall be carried out by suitably trained personnel in accordance with the applicable code of practice (EN 60079-14 and EN 60079-17 in Europe).8) The equipment is non-repairable.9) The certificate numbers have an ‘X’ suffix, which indicates that special conditions for safe use apply. Those installing or inspecting this equipment must have access to the certificates.10) If the equipment is likely to come into contact with aggressive substances, then it is the responsibility of the user to take suitable precautions that prevent it from being adversely affected, thus ensuring that the type of protection is not compromised. - Aggressive substances: for example, acidic liquids or gases that may attack metals, or solvents that may affect polymeric materials. - Suitable precautions: for example, establishing from the material’s data sheet that it is resistant to specific chemicals.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 31mmmmmQuick Start: localOperating via the handheld programmerSITRANS LR250 carries out its level measurement tasks according to settings made via parameters. The settings can be modified locally via the Local User Interface (LUI) which consists of an LCD display and a handheld programmer. A Quick Start Wizard provides an easy step-by-step procedure to configure the device for a simple application. There are two ways to access the wizard:• locally (see Quick Start Wizard via the handheld programmer on page 36)• from a remote location (see Quick Start Wizard via SIMATIC PDM on page 41, or Quick Start Wizard via AMS Device Manager on page 63For more complex setups see Appendix E: Application Examples on page 142, and for the complete range of parameters see Parameter Reference on page 78.Activating SITRANS LR250Power up the instrument. SITRANS LR250 automatically starts up in Measurement mode. A transition screen showing the current firmware revision and an incrementing line of stars is displayed while the first measurement is being processed.Press Mode to toggle between Measurement and Program Mode.1) 2)The LCD DisplayMeasurement mode displayNormal operationFault present1) Press UP or DOWN arrow to switch.2) In response to a key press request. For details, see Key functions in Measurement mode on page 32.1 – toggle indicator1) for linear units or %2 – selected operation: level, space, distance, or volume3 – measured value (level or volume, space, or distance)4 – units5 – bar graph indicates level6 – secondary region indicates on request2) electronics temperature, echo confidence, loop current, or distance7 – text area displays status messages 8 – device status indicator (see Device Status Icons on page 118) 67813425S: 0 LOE7 – text area displays a fault code and an error message8 – service required icon appears
Page 32 SITRANS LR250 HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmQuick Start: localPROGRAM mode displayNavigation view• A visible menu bar indicates the menu list is too long to display all items.• A band halfway down the menu bar indicates the current item is halfway down the list.• The depth and relative position of the item band on the menu bar indicates the length of the menu list, and approximate position of the current item in the list. • A deeper band indicates fewer items.Handheld Programmer(Part No. 7ML1930-1BK)The programmer is ordered separately.Key functions in Measurement modeKey Function Result Updates the loop current.New value is displayed in LCD secondary region. Updates internal enclosure tem-perature reading.current item numbercurrent itemcurrent menu item bandmenu bar parameter value/selectionparameter numberparameter nameEdit viewParameter viewC
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 33mmmmmQuick Start: localProgramming SITRANS LR250Change parameter settings and set operating conditions to suit your specific application. (For remote operation see Operating via SIMATIC PDM on page 40 or Operating via AMS Device Manager on page 60.)Parameter menusParameters are identified by name and organized into function groups (seeLCD menu structure on page 165).Updates echo confidence value.New value is displayed in LCD secondary region.Updates distance measurement.Mode opens PROGRAM mode.Opens the menu level last displayed in this power cycle, unless power has been cycled since exit-ing PROGRAM mode or more than 10 minutes have elapsed since PROGRAM mode was used. Then top level menu will be displayed.RIGHT arrowopens PROGRAM mode. Opens the top level menu. UP or DOWN arrowtoggles between linear units and percent.LCD displays measured value in either linear units or percent.Notes: • While the device is in PROGRAM mode the output remains fixed and does not respond to changes in the device.• SITRANS LR250 automatically returns to Measurement mode after a period of inactivity in PROGRAM mode (between 15 seconds and 10 minutes, depending on the menu level). Note: For the complete list of parameters with instructions, see Parameter Reference on page 78.Key Function Result (cont’d)1. QUICK START2. SETUP2.1. DEVICE.............2.7. LINEARIZATION2.7.1. VOLUME2.7.1.1. VESSEL SHAPE
Page 34 SITRANS LR250 HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmQuick Start: local1. Enter PROGRAM mode• Point the programmer at the display from a maximum distance of 300 mm (1 ft).•RIGHT arrow activates PROGRAM mode and opens menu level 1. •Mode opens the menu level last displayed in PROGRAM mode within the last 10 minutes, or menu level 1 if power has been cycled since then.2. Navigating: key functions in Navigation mode3. Editing in PROGRAM modeSelecting a listed optiona) Navigate to the desired parameter.b) Press RIGHT arrow to open parameter view.Notes: • In Navigation mode ARROW keys move to the next menu item in the direction of the arrow.• For Quick Access to parameters via the handheld programmer, press Home , then enter the menu number, for example: 2.7.1 (Volume).Key Name Menu level Function UP or DOWN arrow menu or parameter Scroll to previous or next menu or parameter.RIGHT arrow menu Go to first parameter in the selected menu, or open next menu.parameter Open Edit mode.LEFT arrow menu or parameter Open parent menu.Mode menu or parameter Change to MEASUREMENT mode.Home menu or parameter Open top level menu: menu 1.displayhandheld programmer Max. 300 mm(1 ft)parameter name parameternumbercurrent selection
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 35mmmmmQuick Start: localc) Press RIGHT arrow again to open Edit mode. The current selection is highlighted. Scroll to a new selection.d) Press RIGHT arrow to accept it The LCD returns to parameter view and displays the new selection.Changing a numeric valuea) Navigate to the desired parameter.b) Press RIGHT arrow to open parameter view. The current value is displayed.c) Press RIGHT arrow again to open Edit mode. The current value is highlighted.d) Key in a new value.e) Press RIGHT arrow to accept it. The LCD returns to parameter view and displays the new selection.Key functions in Edit modeKey Name Function UP or DOWN arrow Selecting options Scrolls to item.Numeric editing - Increments or decrements digits- Toggles plus and minus signRIGHT arrowSelecting options- Accepts the data (writes the parameter)- Changes from Edit to Navigation modeNumeric editing - Moves cursor one space to the right- or with cursor on Enter sign, accepts the data and changes from Edit to Navigation modeLEFT arrow: Selecting options Cancels Edit mode without changing the parameterNumeric editing - Moves cursor to plus/minus sign if this is the first key pressed- or moves cursor one space to the left.current valueparameternumberparameter name
Page 36 SITRANS LR250 HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmQuick Start: localQuick Start Wizard via the handheld programmer1. Quick Starta) Point the programmer at the display from a maximum distance of 300 mm (1 ft), then press RIGHT arrow to activate PROGRAM mode and open menu level 1. b) Press RIGHT arrow twice to navigate to menu item 1.1 and open parameter view. c) Press RIGHT arrow to open Edit mode or DOWN arrow to accept default values and move directly to the next item.d) To change a setting, scroll to the desired item or key in a new value.e) After modifying a value, press RIGHT arrow to accept it and press DOWN arrow to move to the next item. f) Quick Start settings take effect only after you select Yes to Apply changes in step 1.8.1.1. LanguageSelects the language to be used on the LCD and takes effect immediately.Clear Numeric editing Erases the display.Decimal pointNumeric editing Enters a decimal point.Plus or minus signNumeric editing Changes the sign of the entered value. to Numeral Numeric editing Enters the corresponding character.Notes: • The Quick Start wizard settings are inter-related and changes apply only after you select YES in Apply? (Apply changes) (1.8.).• Do not use the Quick Start wizard to modify individual parameters: see instead Parameter Reference on page 78.Options English, Deutsch, Français, EspañolKey Name Function (cont’d)
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 37mmmmmQuick Start: local1.2. MaterialSelects the appropriate echo processing algorithms for the material (see Position Detect (2.8.4.2.) on page 127 for more detail).1.3. Response RateSets the reaction speed of the device to measurement changes in the target range.Use a setting just faster than the maximum filling or emptying rate (whichever is greater). 1.4. UnitsSensor measurement units.1.5. Operation Mode1)Options LIQUIDLIQUID LOW DKa) (low dielectric liquid – CLEF algorithm enabled) a) dK < 3.0OptionsResponse Rate (1.3.) Fill Rate (2.4.2.)/Empty rate (2.4.3.)SLOW 0.1 m/min (0.32 ft/min)MED 1.0 m/min (3.28 ft/min)FAST 10.0 m/min (32.8 ft/min)Options M, CM, MM, FT, INOperation Description Reference pointNOSERVICEMeasurement and associated loop cur-rent are not updated, and the device defaults to Fail-safe modea).a) See Material Level (2.5.1.) on page 83 for more detail.LEVEL Distance to material surface Low Calibration PointSPACE Distance to material surface High Calibration PointDISTANCE Distance to material surface Sensor Reference Point1) The point from which High and Low Calibration points are referenced: see Dimensions on page 12 and Flanged Horn with extension on page 14. High Cal. Point (process full level)Low Cal. Point (process empty level)LevelSpaceDistancesensor reference point1)
Page 38 SITRANS LR250 HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmQuick Start: local1.6. Low Calibration PointDistance from Sensor Reference to Low Calibration Point: usually process empty level. (See Operation Mode (1.5.) for an illustration.)1.7. High Calibration PointDistance from Sensor Reference to High Calibration Point: usually process full level. (See Operation Mode (1.5.) for an illustration.)1.8. Apply? (Apply changes)In order to save the Quick Start settings it is necessary to select Yes to apply changes.Press Mode to return to Measurement mode. SITRANS LR250 is now ready to operate.Auto False Echo SuppressionIf you have a vessel with known obstructions, we recommend using Auto False Echo Suppression to prevent false echo detection. See TVT setup (2.8.7.) on page 94 for instructions. This feature can also be used if SITRANS LR250 displays a false high level, or the reading is fluctuating between the correct level and a false high level.Requesting an Echo Profile• In PROGRAM mode, navigate to: Level Meter > Diagnostics (3.) > Echo Profile (3.1.)• Press RIGHT arrow to request a profile.•UP/DOWN arrows are dedicated to scrolling through the icons.• The selected icon is highlighted.• Press UP arrow to select Measure and RIGHT arrow to update the profile.• Press DOWN arrow to select Exit then press RIGHT arrow to return to the previous menu.Values Range: 0.00 to 20.00 mValues Range: 0.00 to 20.00 mOptions YES, NO, DONE (Display shows DONE when Quick Start is successfully com-pleted.)algorithm: tFconfidence distanceTVT echoexit icon selected /highlightedexit icon deselectedexit measure
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 39mmmmmQuick Start: localLevel application exampleThe application is a vessel that takes an average 3 hours (180 minutes) to fill and 3 weeks to empty.Fill rate = 0.08 m/minute [(Low Cal Pt. minus High Cal Pt.) / fastest of fill or empty time]= (15.5 m – 1 m) / 180 min. = 14.5 m /180 min. = 0.08 m/min.Quick Start Parameter Setting Description Material (1.2.) LIQUIDResponse Rate (1.3.) SLOW Resets Fill Rate and Empty Rate to 0.1 m/minute.Units (1.4.) mOperation Mode (1.5.) LEVEL Material level referenced from Low Cal. Point.Low Calibration Point (1.6.) 15.5 Process empty level.High Calibration Point (1.7.) 1.0 Process full level.Apply? (Apply changes) (1.8.) YES Save new settings.sensor reference point Level Low Cal. PointHigh Cal. Point15.5 m1.0 mSITRANS LR250
Page 40 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSIMATIC PDMOperating via SIMATIC PDMSIMATIC PDM is a software package used to commission and maintain SITRANS LR250 and other process devices. Please consult the operating instructions or online help for details on using SIMATIC PDM. (You can find more information at www.siemens.com/simatic-pdm.)Functions in SIMATIC PDMSIMATIC PDM monitors the process values, alarms and status signals of the device. It allows you to display, compare, adjust, verify, and simulate process device data; also to set schedules for calibration and maintenance.Parameters are identified by name and organized into function groups. See LCD menu structure on page 165 for a chart1) and Changing parameter settings using SIMATIC PDM on page 48 for more details. See Parameters accessed via pull-down menus on page 48 for parameters that do not appear in the menu structure in SIMATIC PDM.Features of SIMATIC PDM Rev. 6.0, SP4The graphic interface in SITRANS LR250 makes monitoring and adjustments easy. Notes:• For a complete list of parameters see Parameter Reference on page 78.• While the device is in PROGRAM mode the output remains fixed and does not respond to changes in the device.1) The menu structure for SIMATIC PDM is almost identical to that for the LCD. Feature page FunctionQuick Start 42 Device configuration for simple applicationsEcho Profile Utilities 49Easy access to echo profile viewing/comparison, TVT shaping, auto false echo suppression and echo setupAuto False Echo Suppression 52 Screen out false echoesTVT Shaper 51 Manual TVT adjustmentLinearization 45 Volume measurement in an irregular vesselProcess Variables 57 Monitor process variables and level trendSecurity 58 Protect security and communication parameters from modification by the maintenance user
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 41mmmmmSIMATIC PDMFeatures of SIMATIC PDM Rev. 5.2, SP1 SIMATIC PDM Rev. 5.2 SP1 is supported only for basic configuration and troubleshooting. For advanced features such as the Quick Start wizard, Rev. 6.0 SP3 HF2 or higher is required.Electronic Device Description (EDD)You can locate the EDD in Device Catalog, under Sensors/Level/Echo/Siemens Milltronics/SITRANS LR250. Check the product page of our website at: www.siemens.com/LR250, under Downloads, to make sure you have the latest version of SIMATIC PDM, the most recent Service Pack (SP) and the most recent hot fix (HF). If you need to install a new EDD see Configuring a new device below.Configuring a new device1) Check that you have the most recent EDD, and if necessary download it from the product page of our website at www.siemens.com/LR250. Save the files to your computer, and extract the zipped file to an easily accessed location. Launch SIMATIC PDM – Manager Device Catalog, browse to the unzipped EDD file and select it. 2) Launch SIMATIC Manager and create a new project for LR250. Application Guides for setting up HART devices with SIMATIC PDM can be downloaded from the product page of our website at: www.siemens.com/LR250.3) Open the menu Device – Master Reset and click on OK to perform a reset to Factory Defaults.4) After the reset is complete upload parameters to the PC/PG.5) Configure the device via the Quick Start wizard.Quick Start Wizard via SIMATIC PDMThe graphic Quick Start Wizard provides an easy 5-step procedure that configures the device for a simple application.Please consult the operating instructions or online help for details on using SIMATIC PDM.1) If you have not already done so, check that you have the most up-to-date Electronic Device Description (EDD) for your instrument. (See Configuring a new device above.)2) Launch SIMATIC Manager and create a new project for LR250. (Application Guides for setting up HART and PROFIBUS PA devices with SIMATIC PDM can be downloaded from the product page of our website at: www.siemens.com/LR250).Note: Clicking on Cancel during an upload from device to SIMATIC PDM will result in some parameters being updated.
Page 42 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSIMATIC PDMQuick StartLaunch SIMATIC PDM, open the menu Device – Wizard - Quick Start, and follow steps 1 to 5. Step 1 – Identification3) Click on Read Data from Device to upload Quick Start parameter settings from the device to the PC/PG and ensure PDM is synchronized with the device.4) If required, change the language for the local user interface.5) Click on NEXT to accept the default values. (Description, Message, and Installation Date fields can be left blank.)Notes: • The Quick Start wizard settings are inter-related and changes apply only after you click on FINISH AND DOWNLOAD at the end of step 5 to save settings offline and transfer them to the device. • Do not use the Quick Start Wizard to modify individual parameters. For quick access to echo profile parameters see Echo Setup on page 54, or see Parameter Reference on page 78 for a complete list.•Click on BACK to return and revise settings or CANCEL to exit the Quick Start. • For a vessel with obstructions seeAuto False Echo Suppression on page 52.Note: The layout of the dialog boxes shown may vary according to the resolution setting for your computer monitor.Quick Start
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 43mmmmmSIMATIC PDMStep 2 – ApplicationSelect the application type (level or volume) and the material1), then click on NEXT. Step 3 – Vessel ShapeThe vessel shapes shown are predefined. To describe a more complex shape see Using Linearization via the Quick Start wizard on page 45.For a vessel with obstructions, see Auto False Echo Suppression on page 52Select the vessel shape, and click on NEXT.1) See Application with Stillpipe on page 144 for a Low Dielectric Liquid application.
Page 44 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSIMATIC PDMStep 4 – RangeSet the parameters, and click on NEXT.Step 5 – SummaryCheck parameter settings, and click on BACK to return and revise values, FINISH to save settings offline, or FINISH AND DOWNLOAD to save settings offline and transfer them to the device.The message Quick Start was successful will appear. Click on OK.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 45mmmmmSIMATIC PDMLinearizationYou can use the linearization feature to define a more complex vessel shape and enter up to 32 level breakpoints where the corresponding volume is known. The values corresponding to 100% and 0% levels must be entered. The breakpoints can be ordered from top to bottom, or the reverse. Example (values for example purposes only)Using Linearization via the Quick Start wizardOpen the menu Device – Wizard - Quick Start:1) In Step 1 – Identification, click on Read Data from Device, select language, and click on Next.2) In Step 2 – Application, select a volume application, for example Volume in a vessel, and click on Next.3) In Step 3 – Vessel Shape, choose the vessel shape option Linearization Table.4Breakpoint number321Break-point no.Level value(m)Volume value(l)10 025 5003 9 30004 19.5 8000Level value95020 m0.5 m19.5
Page 46 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSIMATIC PDM4) In Step 4 – Rangesa) Enter parameter values.b) Click on Linearization.c) In the Linearization window click on the appropriate Breakpoint tab to open the dialog window.d) Enter the desired level and associated volume values1), and click on OK.e) In the Step 4 window, click on NEXT.Note: The Reset button resets values to the values in the offline table.1) For display purposes we recommend entering values in ascending order (that is, the low-est values in level 1 and volume 1).LinearizationBreakpoints 1 - 8
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 47mmmmmSIMATIC PDM5) In Step 5 – Summary, check parameter values. Click on BACK to return and revise values, FINISH to save settings offline, or FINISH AND DOWNLOAD to save settings offline and transfer them to the device.The message Quick Start was successful will appear. Click on OK.Configuring a stillpipe application• Launch the Quick Start wizard and follow steps 1 to 2. • In step 2, select Application Type – Level in a vessel with stillpipe, Material – Liquid Low dK, and set the stillpipe diameter as desired. • The wizard updates the propagation factor according to the pipe diameter, and enables the CLEF algorithm for low dK liquids (see Position Detect (2.8.4.2.) on page 127 for more detail).• Continue through steps 3 to 5 then click on FINISH AND DOWNLOAD to save settings offline and transfer them to the device.
Page 48 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSIMATIC PDMChanging parameter settings using SIMATIC PDMMany parameters are accessed via the 4-level menu in PDM. See Parameters accessed via pull-down menus below for the others.1) Launch SIMATIC PDM, connect to SITRANS LR250, and upload data from the device.2) Adjust parameter values in the parameter value field then click on Enter. The status fields read Changed.3) Open the Device menu, click on Download to device, then use File – Save to save settings offline. The status fields are cleared.Parameters accessed via pull-down menusClick on Device or View to open the associated pull-down menus.See Pull-down menus on page 49 for a table.Notes: • For a complete list of parameters, see Parameter Reference on page 78.• Clicking on Cancel during an upload from device to SIMATIC PDM will result in some parameters being updated.value fieldspull-down menus
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 49mmmmmSIMATIC PDMPull-down menusEcho Profile UtilitiesOpen the menu Device – Echo Profile Utilities and click on the appropriate tab for easy access to: •Echo profile on page 50•View Saved Echo Profiles on page 50•TVT Shaper on page 51•Auto False Echo Suppression on page 52•Echo Setup on page 54Device menus page View menus pageCommunication path Process Variables 57Device Status 58Download to deviceUpload to PC/PGUpdate Diagnostic StatusToolb arStatus barWizard - Quick Start 42 UpdateEcho Profile Utilities 49Maintenance 54Wear 56Select Analog Output 55Self Test 55Loop Test 56Configuration Flag Reset 56Master Reset 56HART Communication 56
Page 50 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSIMATIC PDMEcho profile• In the Echo Profile Utilities window click on the tab Echo Profile. • Click on the Measure button to update the profile. Select Standard resolution (loads 1 of every 8 points of the profile for a quick view) or Detailed resolution (loads all data points).• Click on the Save button and in the new window enter a name and click on OK.•Click on OK to exit. View Saved Echo ProfilesTo view a saved profile, click on the tab View Saved Echo Profiles.Echo profile data loggingYou can store up to 50 profiles at a selected interval (maximum 60 minutes). Inside Echo Profile Utilities, in the Echo Profile Time Based Storage window:• Enter the desired interval between stored profiles.• Enter the desired number of profiles to be stored (maximum 50).•Click on Start. A message appears warning of the time delay and warning that all previous saved profiles will be overwritten. Click on OK to proceed. The new profiles will be saved with their date and time.• Click on the tab View Saved Echo Profiles to view the stored profilesNotes: • Double click on each axis to see the Xscale and Data Scale values. Right-click or Left-click on the axis and drag to reposition the scale.• After saving a profile click on OK, not the x button, to close the Echo Profile Utilities window, otherwise the profile will not be saved.Echo Profile Time Based StorageResolution
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 51mmmmmSIMATIC PDMTVT ShaperThis feature allows you to manually adjust the TVT to avoid false echoes caused by obstructions. (For an explanation see Auto False Echo Suppression (2.8.7.1.) on page 130.)Open the menu Device – Echo Profile Utilities and click on the tab TVT Shaper•Click on Measure to refresh the echo profile and load the current TVT from the device.• Change the position of the cursor on the TVT using the Point+ and Point– buttons: raise and lower the TVT using Offset+ and Offset–.• Alternatively, enter values for Point and Offset directly into the dialog boxes. •Click on Transfer to Device.Note: Double click on each axis to see the Xscale and Data Scale values. Right-click or Left-click on the axis and drag to reposition the scale.TVT cursorecho profile
Page 52 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSIMATIC PDMAuto False Echo Suppression If you have a vessel with known obstructions, we recommend using Auto False Echo Suppression to prevent false echo detection. This feature can also be used if the device displays a false high level, or the reading is fluctuating between the correct level and a false high level.The device learns the echo profile over the whole measurement range and the TVT is shaped around all echoes present at that moment. (See Auto False Echo Suppression (2.8.7.1.) on page 130 for a more detailed explanation.)The learned TVT will be applied over a specified range. The default TVT is applied over the remainder of the measurement range. 1) Make sure the material level is below all known obstructions. 2) Determine Auto False Echo Suppression Range. Measure the actual distance from the sensor reference point to the material surface using a rope or tape measure. Subtract 0.5 m (20") from this distance, and use the resulting value.Notes: • Make sure material level is below all known obstructions at the moment Auto False Echo Suppression is used to learn the echo profile. We recommend an empty or almost empty vessel.• Note the distance to material level when the environment is learned, and set Auto False Echo Suppression Range to a shorter distance to avoid the material echo being screened out.• Set Auto False Echo Suppression and Auto False Echo Suppression Range during startup, if possible.• If the vessel contains an agitator it should be running. • Before adjusting these parameters, rotate the instrument for best signal (lower false-echo amplitude).
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 53mmmmmSIMATIC PDM3) Open the menu Device – Echo Profile Utilities and click on the tab Auto False Echo Suppression.4) Enter the value for Auto False Echo Suppression Range and select On. 5) Click on Learn. The message appears: ’This will learn a new echo profile. Once done it cannot be undone’. Click on OK.6) Once Auto TVT is complete click on Transfer to Device. To exit click on OK. Auto TVT is enabled and the learned TVT will be used.7) To turn Auto False Echo Suppression off or on, reopen the Auto False Echo Suppression window and click on Off or On.Before Auto False Echo Suppression default TVTTVT Hover LevelLevel (db)echo markerAfter Auto False Echo Suppression material levelfalse echoAuto False Echo SuppressionRangeechomarkerLevel (db)defaultTVTmaterial levelfalse echolearned TVT
Page 54 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSIMATIC PDMEcho SetupOpen the menu Device – Echo Profile Utilities and click on Echo Setup.MaintenanceYou can set schedules and reminders for: • device maintenance based on its projected lifetime • sensor maintenance based on its projected lifetime•service• calibrationTo set Device/Sensor Maintenance schedules:1) Open the menu Device – Maintenance, and click on the Remaining Device/Sensor Lifetime tab. AlgorithmPosition DetectEcho ThresholdDamping FilterCLEF RangeResponse Rate Fill Rate/min. Empty Rate/min. Provides quick access to echo profile parameters:
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 55mmmmmSIMATIC PDM2) Modify desired values, and click on Write.3) Click on Read, to see the effects of your modification.4) If desired, set reminders for either or both of Reminder 1 (Required)/Reminder 2 (Demanded).5) Click on Snooze to add a year to the Total Expected Device Life.To set Service/Calibration schedules:1) Open the menu Device – Maintenance, and click on the Service/Calibration Schedule tab. 2) Modify desired values, and click on Write.3) Click on Read, to see the effects of your modification.4) If desired, set reminders for either or both of Reminder 1 (Required)/Reminder 2 (Demanded).5) Click on Service/Calibration Performed to reset the schedule.Select Analog OutputAllows you to set the mA Output to report Level, Distance. See Current Output Function on page 84 for an illustration.If a volume application is selected, mA Output is automatically set to Volume. (See Analog Output on page 132 for more details.)1) Open the menu Device – Select Analog Output. 2) The Select Analog Output window displays the current setting: click on OK.3) Select a different setting and click on OK.4) The Select Analog Output window displays the new setting: click on OK.Self TestChecks memory (RAM and Flash). If there are no errors, returns the message ’Self Test OK.’ If errors are found, returns the message ’Self Test Fails’.Open the menu Device – Self Test, select the option Yes and click on OK.
Page 56 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSIMATIC PDMLoop TestAllows you to input a simulated value (4 mA, 20 mA, or a user-defined value) in order to test the functioning of the mA connections during commissioning or maintenance of the device. (The range is 3.56 mA to 22.6 mA: see mA Output Value (2.6.6.) on page 86.)To simulate a user-defined mA value:1) Open the menu Device – Loop Test. 2) Select Other, enter the new value, and click on OK. The message ’Field Device fixed at [new value]’ appears. Click on OK. The Loop Test window remains open.3) When you are ready to end simulation, select End and click on OK to return the device to the actual output value.Configuration Flag ResetTo reset the configuration flag to zero, open the menu Device – Configuration Flag Reset and perform a reset.Master ResetFactory DefaultsFactory Defaults resets all parameters to the default settings with the following exceptions: • Device Address• Write Protect and PIN to unlock• Learned TVT curve1) Open the menu Device – Master Reset, select Yes, and click on OK to perform a reset to Factory Defaults.2) After the reset is complete upload parameters to the PC/PG. (If you are performing a reset after replacing the device with a different instrument, do not upload parameters to the PC/PG).WearReports the number of hours the device has been operating, and the number of times it has been powered up.Open the menu Device – Wear to view:• Powered Days• Power-on ResetsHART CommunicationSets the number of request/response preambles (default 5).We recommend you do not change this value. DiagnosticsYou can monitor level/volume trends, electronics temperature, and device status.Note: The simulated AO (Analog Output) value influences output to the control system.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 57mmmmmSIMATIC PDMProcess VariablesTo compare outputs in real time open the menu View – Process Variables and click on Overview to see reading (level, space, distance, volume); analog output; device status; and current electronics temperature.To see highest and lowest electronics temperatures, navigate to Level Meter > Maintenance and Diagnostics > Electronics Temperature.TrendOpen the menu View – Process Variables and click on Trend.space4 trend lines can be monitored:(distinguished by color in SIMATIC PDM).distancelevel volume
Page 58 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmSIMATIC PDMDevice StatusOpen the menu View – Device Status to view Diagnostics, Device Status, Hardware/Firmware (HW/FW) Status, and Maintenance status. In the Diagnostics window, click on Update diagnostics to update diagnostic information and refresh linked icons.UpdateOpen the menu View – Update to refresh the screen.SecurityA password option protects security and communication control parameters from modification by a maintenance user. When you open a project the User dialog window provides two options: maintenance or specialist. If a password has been set it will not be possible to open the project as a specialist without it. A maintenance user will be able to open the project without a password but will not have access to security and communication control parameters.1) Open a project, double-click on the device icon, and in the User window select Specialist.2) Open the menu Options – Settings and click on the Password tab.3) Enter a new password and re-enter it in the Confirmation window. Click on OK.update diagnostics
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 59mmmmmSIMATIC PDM
Page 60 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmAMS Device MangerOperating via AMS Device ManagerAMS Device Manager is a software package used to commission and maintain SITRANS LR250 and other process devices. Please consult the operating instructions or online help for details on using AMS Device Manager. (You can find more information at http://www.emersonprocess.com/AMS/.) Application Guides for setting up Siemens HART devices with AMS Device Manager are available on our website at: www.siemens.com/processautomation.Functions in AMS Device ManagerAMS Device Manager monitors the process values, alarms and status signals of the device. It allows you to display, compare, adjust, verify, and simulate process device dataParameters organized into three main function groups allow you to configure and monitor the device: • Configure/Setup• Device Diagnostics (read only)• Process Variables (read only)See AMS Menu Structure on page 73 for a chart1) and Changing parameter settings using AMS Device Manager on page 65 for more details. Features of AMS Device ManagerThe graphic interface in SITRANS LR250 makes monitoring and adjustments easy. Note: While the device is in PROGRAM mode the output remains fixed and does not respond to changes in the device.1) The menu structure for AMS Device Manager is almost identical to that for the LCD. Feature page FunctionQuick Start 63 Device configuration for simple applicationsEcho Profile 69 Echo profile viewingTVT 68 Screen out false echoesLinearization 64 Volume measurement in an irregular vesselProcess Variables 71 Monitor process variables and level trendSecurity 70 Protect security and communication parameters from modification by the maintenance user
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 61mmmmmAMS Device MangerDevice Description (DD)SITRANS LR250 requires the DD for AMS Device Manager version 9.0.You can locate the DD in Device Catalog, under Sensors/Level/Echo/Siemens Milltronics/SITRANS LR250. Check the product page of our website at: www.siemens.com/LR250, under Downloads, to make sure you have the latest version of AMS Device Manager. If you need to install a new DD see Configuring a new device below.Configuring a new device1) Check that you have the most recent DD, and if necessary download it from the product page listed above. Save the files to your computer, and extract the zipped file to an easily accessed location. 2) Launch AMS Device Manager– Add Device Type, browse to the unzipped DD file and select it.Startup1) Launch AMS Device Manager. (Application Guides for setting up HART devices with AMS Device Manager can be downloaded from the product page of our website at: www.siemens.com/LR250.)2) In Device Connection View right-click on the device icon and select Scan Device to upload parameters from the device.3) Double click the device icon to open the startup screen. The startup screen shows device identification details, and a navigation window on the left-hand side of the screen.
Page 62 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmAMS Device MangerMaster Reset• Navigate to Configure/Setup > Operation • In the General field click on Master Reset and accept the option Factory Defaults.Pull-down menu accessA pull-down menu under Actions gives alternative access to several features.Scan Device • Open the menu Actions – Scan Device.•Scan Device uploads parameters from the device (synchronizes parameters).Device configuration1) Navigate to Configure/Setup > Operation and click to open the dialog window.2) In the General field, click on Master Reset and perform a reset to Factory Defaults.3) Open the pull-down menu Actions – Scan Device to synchronize parameters (upload parameters from the device to AMS).4) Configure the device via the Quick Start wizard.Action menu itemsMaster Reset
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 63mmmmmAMS Device MangerQuick Start Wizard via AMS Device ManagerA Wizard provides an easy 5-step Quick Start procedure that configures the device for a simple application.Quick StartStep 1 – Identification1) Navigate to Configure/Setup > Wizard > Quick Start.2) Click on Step 1. 3) You can accept the default values without modification. (Description, Message, and Installation Date fields can be left blank.) If desired, make changes then click on Apply. Step 2 – Application Type1) Click on Step 2.2) Select the application type (Level, Space, Distance, or No Service1)) and the material (Liquid or Low dielectric liquid).3) Click on Apply.Notes: • The layout of the dialog boxes shown may vary according to the resolution setting for your computer monitor• At each step, you can accept the default values without modification and click on the next step to proceed.• After modifying parameters click on Apply inside the Quick Start window to write the new values to the device.•Click on OK only if you wish to update all parameters to the device and close AMS. 1) For details see Sensor Mode on page 133.
Page 64 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmAMS Device MangerStep 3 – Vessel Shape1) Click on Step 3.2) Select a predefined vessel shape. (To describe a more complex shape see Linearization below.)3) Click on Apply.Step 4 – Range1) Click on Step 4.2) Change units if desired (in meters by default).3) Set High and Low Calibration points.4) To convert the reading from level to volume enter a value for Maximum Volume.5) If a vessel shape with parabolic ends has been selected, set dimensions A and L.6) Click on Apply.Step 5 – SummaryCheck parameter settings, and click on Cancel to abort, or Apply to transfer values to the device.LinearizationYou can use the linearization feature to define a more complex vessel shape and enter up to 32 level breakpoints where the corresponding volume is known. The values corresponding to 100% and 0% levels must be entered. The breakpoints can be ordered from top to bottom, or the reverse. (See Linearization on page 45 for an example.)Using Linearization via the Quick Start wizard1) Navigate to Configure/Setup > Wizard > Quick Start.2) In Step 1 – Identification make any desired modifications and click on Apply.3) In Step 2 – Application Type select a level application and liquid as a material.4) In Step 3 – Vessel Shape, choose the vessel shape option Linearization Table.5) In Step 4 – Range Setup enter a value for maximum volume.Breakpointsmax. volume
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 65mmmmmAMS Device Manger6) Click on the Breakpoints tab and enter values for level and volume for up to 32 breakpoints.7) Navigate to Configure/Setup > Setup > Linearization and click on Characteristic to preview the characteristic curve of the vessel breakpoints.8) In Step 5 – Summary check parameter values. Click on the appropriate step menu to return and revise values, or click on a different menu to exit Quick Start.Changing parameter settings using AMS Device Manager1) Adjust parameter values in the parameter value field in Configure/Setup view, then click on Apply to write the new values to the device. The parameter field will display in yellow until the value has been written to the device.2) Click on OK only if you wish to update all parameters and exit AMS. OperationNavigate to Configure/Setup > Operation and click on Operation to open the dialog window for access to:General: • Select Analog Output (see Select Analog Output on page 55)•D/A Trim•Master Reset (see Master Reset on page 56)Simulation/Test• Self Test (see Self Test on page 55)• Loop Test (see Loop Test on page 56)Notes: • For a complete list of parameters, see Parameter Reference on page 78.• For more detailed explanations of the parameters listed below see the pages referenced.
Page 66 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmAMS Device MangerSetupSensor Navigate to Configure/Setup > Setup and click on Sensor for access to:General [see Sensor (2.2.) on page 79]•Units• Operating Mode•Material• Damping Filter• Antenna (read only)Calibration [see Calibration (2.3.) on page 80]• Low Calibration Point• High Calibration Point• Sensor OffsetRate [see Rate (2.4.) on page 81]• Response Rate• Fill rate/minute• Empty rate/minuteFail-safe [see Fail-safe (2.5.) on page 83]• Material level•Timer•LevelNote: For more detailed explanations of the parameters listed below see the pages referenced.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 67mmmmmAMS Device MangerAnalog Output ScalingNavigate to Configure/Setup > Setup and click on Analog Output Scaling for access to:Analog Output Scaling [see Analog Output Scaling (2.6.) on page 84]• mA Output Function• Start of scale• Full Scale• Control Range (lower limit)• Control Range (upper limit)Signal Processing
Page 68 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmAMS Device MangerSignal Processing (continued)GeneralNavigate to Configure/Setup > Setup > Signal Processing and click on General for access to:Range [see Signal Processing (2.8.) on page 90]•Near Range• Far Range• Propagation FactorEcho Select [see Echo select (2.8.4.) on page 91]• Algorithm• Position Detect• Echo Threshold• CLEF RangeSampling [see Sampling (2.8.5.) on page 92]• Echo Lock• Sampling Up• Sampling Down• Echo Lock WindowSignal Quality• Confidence• Echo Strength•Noise Average•Noise PeakTVTModify the TVT to screen out false echoes [see Auto False Echo Suppression (2.8.7.1.) on page 130].
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 69mmmmmAMS Device MangerNavigate to Configure/Setup > Setup > Signal Processing and click on TVT. Click on one of the two tabs to access the parameters listed:TVT Setup [see TVT setup (2.8.7.) on page 94]• Auto False Echo Suppression Range• Auto False Echo Suppression•Hover Level• Shaper ModeTVT Shaper• Shaper breakpoints 1 to 40. (Turn TVT Setup/Shaper Mode on to activate.)Manual TVT Curve Displays the effects of the TVT shaper modifications. Navigate to Configure/Setup > Setup > Signal Processing and click on Manual TVT Curve.Echo Profile• Navigate to Configure/Setup > Setup > Signal Processing and click on Echo Profile.• Select Standard operation for faster display.Local Display Navigate to Configure/Setup > Setup > Local Display for access to: • Language• LCD Fast Mode [see LCD Fast Mode (4.9.) on page 112]• LCD Contrast [see LCD Contrast (4.10.) on page 112]Maintenance and DiagnosticsNavigate to Maintenance and Diagnostics for access to: Remaining Device Lifetime [see Remaining Device Lifetime (4.2.) on page 99]• Lifetime expected• Remaining Lifetime• Time in Operation• Activation of Reminders• Reminder 1 before Lifetime (Required)• Reminder 2 before Lifetime (Demanded)Remaining Sensor Lifetime [see Remaining Sensor Lifetime (4.3.) on page 102]• Lifetime expected• Remaining Lifetime• Time in Operation• Activation of Reminders• Reminder 1 before Lifetime (Required)• Reminder 2 before Lifetime (Demanded)Service Schedule [see Service Schedule (4.4.) on page 105]•Service Interval• Time since last Service• Time until next Service• Activation of Reminders• Reminder 1 before Service (Required)• Reminder 2 before Service (Demanded)
Page 70 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmAMS Device MangerCalibration Schedule [see Calibration Schedule (4.5.) on page 108]• Calibration Interval• Time since last Calibration• Time Until Next Calibration• Activation of Reminders• Reminder 1 before Calibration (Required)• Reminder 2 before Calibration (Demanded)Electronic Temperature• Electronic Temperature •Lowest Value• Highest ValueWear (see Wear on page 56)• Powered days•Poweron ResetsCommunicationNavigate to Communication to read the following: Tag; Manufacturer’s ID; Device ID; Product ID; Device Revision; EDD Revision; Universal CommandSecurityNavigate to Configure/Setup > Security to access:Remote Access [see Remote Access (6.1.) on page 113]• Write Protect (read only)• Access ControlLocal Access [see Local Access (6.2.) on page 114]• Local Write Protected• PIN to UnlockSee also Password Protection on page 72Note: If access control is changed to limit remote access, it can only be reset via the handheld programmer. See Ac cess C ontrol ( 6.1.1.) on page 113.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 71mmmmmAMS Device MangerDevice DiagnosticsClick on the Device Diagnostics bar at the bottom of the navigation window, for access to:Device StatusHardware/Firmware StatusProcess VariablesTo compare outputs in real time click on Process Variables at the bottom of the navigation window. for access to:Process Variables• Values (level, volume, space, distance)• Analog Output•Trend ViewEcho Profile
Page 72 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmAMS Device MangerPassword ProtectionAn AMS Device Manager administrator can configure the user to require a password. The use of passwords is recommended. A password should be assigned to the ’admin’ username immediately after installing AMS Device Manager.Each user is given an AMS Device Manager username and password and required to enter them when they start AMS Device Manager. Access to functions depends on the level of permissions granted.Login types• standard, local, or domainA standard user can change their password in AMS Device Manager. A Local or Domain Windows user cannot change their password using AMS Device Manager and must request their network administrator to do so.User Manager utilityUsernames, passwords, and permissions, are assigned to users by an AMS Device Manager administrator, using the User Manager utility on the Server Plus Station. Only a user with AMS Device Manager System Administration rights can log in to User Manager. To configure a new user/edit existing user:1) From the Windows taskbar select: Start > AMS Device Manager > User Manager.2) In the User Manager window click on Add User.The Add User Wizard dialog allows you to:• select a user type, standard (AMS Device Manager) or Window user.• enter the username and password, and set permissions• edit existing users
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 73mmmmmAMS Device MangerAMS Menu StructureConfigure/Setup IdentificationIdentification TagDescriptionMessageDateDeviceManufacturerProduct NameOrder NumberFinal Assembly NumberHardware RevisionFirmware RevisionLoader RevisionEDD numberWizardQuick StartStep 1 (Identification)Step 2 (Application Type)STep 3 (Vessel Shape)Step 4 (Range)Step 5 (Summary)OperationGeneralSelect Analog OutputD/A TrimMaster ResetSimulation/TestSelf TestLoop-TestSetupSensorGeneralUnitsOperating ModeMaterialDamping FilterAntenna
Page 74 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmAMS Device MangerConfigure/Setup (continued)Setup/Sensor (continued)CalibrationLow Calibration PointHigh Calibration Point’Sensor OffsetRateResponse RateFill rate/minuteEmpty rate/minuteFail-safeTimerMaterial LevelLevelAnalog Output ScalingAnalog Output ScalingmA Output Function Start of ScaleFull ScaleControl Range lower limitControl Range upper limitLinearizationLinearizationVessel ShapeVessel dimensionsMax. volumeDimension ADimension LCharacteristicSignal ProcessingGeneralRangeNear RangeFar RangePropagation FactorEcho SelectAlgorithmPosition DetectEcho ThresholdCLEF RangeSamplingEcho LockSampling UpSampling DownEcho Lock Window.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 75mmmmmAMS Device MangerConfigure/Setup (continued)Setup/Signal Processing (continued)Signal QualityConfidenceEcho StrengthNoise averageNoise PeakTVTTVT SetupAuto False Echo Suppression RangeAuto False Echo SuppressionHover LevelShaper ModeTVT ShaperManual TVT CurveEcho ProfileLocal DisplayMaintenance and DiagnosticsRemaining Device LifetimeLifetime expectedRemaining LifetimeTime in OperationActivation of RemindersReminder 1 before Lifetime (Required)Reminder 2 before Lifetime (Demanded)Remaining Sensor LifetimeLifetime expectedRemaining LifetimeTime in OperationActivation of RemindersReminder 1 before Lifetime (Required)Reminder 2 before Lifetime (Demanded)
Page 76 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmAMS Device MangerMaintenance and Diagnostics (continued)Service ScheduleService IntervalTime since last ServiceTotal Service Interval minus Time Since Last ServiceActivation of RemindersReminder 1 before Service (Required)Reminder 2 before Service (Demanded)Calibration Schedule Calibration IntervalTime since last CalibrationTotal Until Next CalibrationActivation of RemindersReminder 1 before Calibration (Required)Reminder 2 before Calibration (Demanded)Electronic TemperatureElectronic Temperature Lowest ValueHighest ValueWear Powered daysPoweron ResetsCommunicationSecurityRemote AccessWrite ProtectAccess ControlLocal AccessLocal Write ProtectedPIN to Unlock
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 77mmmmmAMS Device MangerNotes
Page 78 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParametersParameter ReferenceParameters are identified by name and organized into function groups. See LCD menu structure on page 165 for a chart1).Parameters accessible via the handheld programmer are preceded by a number. Parameters not preceded by a number are accessible only via remote operation. For more details see: •Operating via SIMATIC PDM on page 40•Operating via AMS Device Manager on page 60Quick Start WizardThe Quick Start wizard provides an easy step-by-step procedure to configure the device for a simple application.1. Quick Start1.1. Language1.2. Material1.3. Response Rate1.4. UnitsNotes: • Parameter names and menu structure are almost identical for SIMATIC PDM and the local user interface (LUI)1). • Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated.•Mode toggles between PROGRAM and Measurement Modes.• For Quick Access to parameters via the handheld programmer, press Home , then enter the menu number, for example: 2.2.1.1) For AMS Device Manager the structure varies slightly.Notes: • Do not use the Quick Start wizard to modify individual parameters. (Perform customization only after the Quick Start has been completed.)• For access via remote operation see Quick Start Wizard via SIMATIC PDM on page 41 or Quick Start Wizard via AMS Device Manager on page 63.• For detailed instructions see Quick Start Wizard via the handheld programmer on page 36.• In Navigation mode, ARROW keys navigate the menu in the direction of the arrow. •Press RIGHT arrow to open Edit Mode, or to save a modification.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 79mmmmmParameters1.5. Operation Mode1.6. Low Calibration Point1.7. High Calibration Point1.8. Apply? (Apply changes)2. Setup2.1. Device2.1.1. Hardware RevisionCorresponds to the electronics hardware of the SITRANS LR250.2.1.2. Firmware RevisionCorresponds to the firmware that is embedded in the SITRANS LR250.2.1.3. Loader RevisionCorresponds to the software used to update the SITRANS LR250.2.1.4. Order OptionRead only. Displays the device type: standard or NAMUR NE 43-compliant.2.2. Sensor 2.2.1. UnitsSensor measurement units.2.2.2. Sensor ModeNote: Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated.Values m, cm, mm, ft, inDefault: mMode Description Reference pointNOSERVICEMeasurement and associated loop current are not updated, and the device defaults to Fail-safe modea).a) See Material Level (2.5.1.) for more detail.n/aLEVEL *Distance to material surfaceLow Calibration Point(process empty level)SPACE High Calibration Point (process full level)DISTANCE Sensor Reference Pointsensor reference point (see Dimensions on page 12 and Flanged Horn with extension on page 14)Level Low Calibration PointHigh Calibration PointFar Rangesensor value Distance Space
Page 80 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters2.2.3. MaterialAutomatically configures the device to operate in the chosen application type, by changing one or more of the following parameters: Propagation Factor (2.8.3.), Position Detect (2.8.4.2.), and/or CLEF Range (2.8.4.4.).You can configure each of the related parameters, to suit your particular application.2.2.4. Damping FilterThe time constant for the damping filter. The damping filter smooths out the re-sponse to a sudden change in level. This is an exponential filter and the engi-neering unit is always in seconds (see Damping on page 132 for more detail). AntennaRead only. Identifies horn configuration (Near Range (blanking) distance is au-tomatically adjusted to suit).2.3. Calibration2.3.1. Low Calibration Pt. Distance from sensor reference point 1) to Low Calibration Point. Units are defined in Units (2.2.1.)Options*LIQUIDLIQUID LOW DKa) (low dielectric liquid – CLEF algorithm enabled) a) dK < 3.0Related parametersPropagation Factor (2.8.3.)Position Detect (2.8.4.2.)CLEF Range (2.8.4.4.)Values Range: 0 to 100.000 sDefault: 10.000 sNote: We recommend using the Quick Start wizard to configure the device.1) The point from which level measurement is referenced (see Sensor Mode (2.2.2.) for an illustration).Values Range: 0 to 20 m. Default 20.00 mRelated parametersUnits (2.2.1.)Far Range (2.8.2.)
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 81mmmmmParameters2.3.2. High Calibration Pt. Distance from sensor reference point1) to High Calibration Point. Units are defined in Units (2.2.1.).When setting the High Calibration Point value, note that echoes are ignored within Near Range (2.2.1.11).2.3.3. Sensor Offset A constant offset that can be added to or subtracted from sensor value1) to compensate if the sensor reference point has shifted. (For example, this could result from adding a thicker gasket or reducing the standoff/nozzle height.)2.4. Rate2.4.1. Response RateSets the reaction speed of the device to measurement changes.Use a setting just faster than the maximum filling or emptying rate (whichever is faster). Values Range: 0 to 20 m. Default 0.00 mRelated parameters Units (2.2.1.)Near Range (2.8.1.)1) The value produced by the echo processing which represents the distance from sen-sor reference point to the target. (see Sensor Mode (2.2.2.) on page 79 for an illustra-tion).Values Range: -99.999 to 99.999. Default: 0.00 mRelated parameters Units (2.2.1.)Note: Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated.Note: Changing Response Rate resets Fill Rate (2.4.2.), Empty rate (2.4.3.), and Damping Filter (2.2.4.).Response Rate (2.4.1.)Fill Rate (2.4.2.)Empty rate (2.4.3.)Damping Filter (2.2.4.)*Slow 0.1 m/min (0.32 ft/min) 10 sMedium 1.0 m/min (3.28 ft/min) 10 sFast 10.0 m/min (32.8 ft/min) 0 s
Page 82 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters2.4.2. Fill RateDefines the maximum rate at which the reported sensor value1) is allowed to increase. Allows you to adjust the SITRANS LR250 response to increases in the actual material level. Fill Rate is automatically updated whenever Response Rate is altered.Enter a value slightly greater than the maximum vessel-filling rate, in units per minute.2.4.3. Empty rateDefines the maximum rate at which the reported sensor value2) is allowed to decrease. Adjusts the SITRANS LR250 response to decreases in the actual material level. Empty Rate is automatically updated whenever Response Rate is altered.Enter a value slightly greater than the vessel’s maximum emptying rate, in units per minute. 1) The value produced by the echo processing which represents the distance from sen-sor reference point to the target (see Sensor Mode (2.2.2.) on page 79 for an illustra-tion).OptionsRange: 0 to 99999 m / min.Response Rate (2.4.1.) Fill Rate * Slow 0.1 m/min (0.32 ft/min)Medium 1.0 m/min (3.28 ft/min)Fast 10.0 m/min (32.8 ft/min)Altered by: Response Rate (2.4.1.)Related parameters Units (2.2.1.)2) The value produced by the echo processing which represents the distance from sen-sor reference point to the target (see Sensor Mode (2.2.2.) on page 79 for an illustra-tion).OptionsRange: 0 to 99999 m / min.Response Rate (2.4.1.) Empty Rate * Slow 0.1 m/min (0.32 ft/min)Medium 1.0 m/min (3.28 ft/min)Fast 10.0 m/min (32.8 ft/min)Altered by: Response Rate (2.4.1.)Related parameters Units (2.2.1.)
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 83mmmmmParameters2.5. Fail-safe2.5.1. Material LevelDefines the mA output to use when the Fail-safe Timer expires.2.5.2. TimerSets the time to elapse since the last valid reading, before the Fail-safe Level is reported.2.5.3. LevelAllows the user to define the mA value to be reported when the Fail-safe timer expires. Note: Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated.Note: The default setting depends whether your device is a standard or NAMUR NE 43-compliant device.STANDARD DEVICEOptions HI 20.5 mA (max. mA Limit) LO 3.8 mA (min. mA Limit) *HOLDLast valid reading (default 22.6 mA)VALUE User-selected value [defined in Level (2.5.3.)]NAMUR NE 43-COMPLIANT DEVICEOptions HI 20.5 mA (max. mA Limit) LO 3.8 mA (min. mA Limit) HOLD Last valid reading * VALUE User-selected value [defined in Level (2.5.3.): default 3.58 mA]Note: When a Loss of Echo occurs Material Level (2.5.1.) determines the material level to be reported when the Fail-safe timer expires. See Loss of Echo (LOE) on page 134 for more detail.Values Range: 0.00 to 7200 secondsDefault: 100 sNotes:• The default setting depends whether your device is a standard or NAMUR NE 43-compliant device.•Material Level (2.5.1.) must be set to VALUE to enable the Level value to be reported.Device Type STANDARD NAMUR NE43- COMPLIANTValues Range 3.56 mA to 22.6 mADefault 22.60 mA 3.58 mA
Page 84 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters2.6. Analog Output Scaling2.6.1. Current Output FunctionCan be set to either Level, Space, Distance, or Volume. (The device can carry out a volume calculation only after a vessel shape has been specified.) To view the mA reading in the secondary region of the LCD, press on the handheld programmer. To modify Current Output Function via SIMATIC PDM:• Open the menu Device – Select Analog Output. (See Select Analog Output on page 55 for more detail.)Notes:•Level, space, and distance, have different reference points.• Use caution when changing Current Output Function while the device is connected to a HART network. Current Output Function controls the primary value and the loop current for the device. • Current Output Function also affects the secondary, tertiary and quaternary variables in a HART network.Options Reference point Description* Level Low Calibration Point measured as a percentage of the difference between High Calibration Point and Low Calibration PointSpace High Calibration Point Distance sensor reference point measured as a percentage of Low Calibration PointVolume converts a level measurement to a volume outputManuala)(LUI only)a) Current Output Function must be set to Manual before modifying mA Output Value (2.6.6.). Remember to restore the previous Current Output Function setting after modifying mA Output Value.allows mA Output Value (2.6.6.) to be set to a user-defined valueLevel Space DistanceDistanceSpaceLevel20 mA100%4 mA 0%HighCal.Point4 mA0%20 mA 100%4 mA0%20 mA 100%Sensorref. pt.Low Cal. Pt.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 85mmmmmParameters2.6.2. Start of Scale (4 mA Setpoint)Sets the process level corresponding to the 4 mA value. 4 mA always defaults to 0, and Current Output Function (2.6.1.) determines whether this is a Level, Space, Distance, or Volume measurement. (See Current Output Function (2.6.1.) for an illustration.)• Enter the reading that is to correspond to a 4 mA output. • Units are defined in Units (2.2.1.) for Level, Space, or Distance. Units are unspecified for Volume.2.6.3. Full Scale (20 mA Setpoint)Sets the process level corresponding to the 20 mA value. 20 mA always defaults to 100%, and Current Output Function (2.6.1.) determines whether this is a Level, Space, or Distance measurement. (See Current Output Function (2.6.1.) for an illustration.)• Enter the reading that is to correspond to a 20 mA output. • Units are defined in Units (2.2.1.) for Level, Space, or Distance. Units are unspecified for Volume.2.6.4. Control Range: lower limit (Min. mA limit)Prevents the mA output from dropping below this minimum level for a measurement value. This does not restrict the Fail-safe or Manual settings.2.6.5. Control Range: upper limit (Max. mA limit)Prevents the mA output from rising above this maximum level for a measurement value. This does not restrict the Fail-safe or Manual settings.ValuesRange: –999999 to +999999Default: 0.00 m (set to value corresponding to 0% as defined by Current Output Function)Related ParametersUnits (2.2.1.)Current Output Function (2.6.1.)ValuesRange: –999999 to +999999Default: 20.00 m (set to value corresponding to 100% as defined by Current Output Function)Related ParametersUnits (2.2.1.)Current Output Function (2.6.1.)Values Range: 3.8 to 20.5 (mA)Default: 3.80 (mA)Values Range: 3.8 to 20.5 (mA)Default: 20.50 (mA)
Page 86 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters2.6.6. mA Output ValueAllows you to use a simulated value to test the functioning of the loop. You can enter 4 mA, 20 mA, or any other user-defined value within the range. a) First set Current Output Function (2.6.1.) to Manual. b) Enter the desired mA value in mA Output Value.c) After completing the test, remember to reset Current Output Function (2.6.1.) to the previous setting.Via SIMATIC PDM:Open the menu Device – Loop Test. (For more detail, see Loop Test on page 56.)2.7. Linearization2.7.1. VolumeCarries out a volume conversion from a level value. 2.7.1.1. Vessel ShapeDefines the vessel shape and allows the LR250 to calculate volume instead of level. If None is selected, no volume conversion is performed. Select the vessel shape matching the monitored vessel or reservoir. Values Range: 3.56 mA to 22.6 mARead Only unless Current Output Function (2.6.1.) is set to Manual.Related parameter Current Output Function (2.6.1.)Vessel Shape LCD DISPLAY/DescriptionAlso required *NoneNONE/No volume calculation requiredN/ACYLINDER/Flat end horizontal cylindermaximum volumeSPHERE/Spheremaximum volume
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 87mmmmmParametersLINEAR/Upright, linear (flat bottom) maximum volumeCONICAL BOT/Conical or pyramidal bottommaximum volume, dimension APARABOLIC BOT/Parabolic bottommaximum volume, dimension AHALF SPHERE BOT/Half-sphere bottommaximum volume, dimension AFLAT SLOPED BOT/Flat sloped bottom maximum volume, dimension APARABOLIC ENDS/Parabolic end horizontal cyl-indermaximum volume, dimension A, dimension LLINEAR TABLEa)/Linearization table(level/volume breakpoints)maximum volume, tables 1-32 level and volume break-pointsa) Linearization Table must be selected in order for level/volume values [see Table 1-8 (2.7.2.)] to be transferred.Vessel Shape (cont’d)LCD DISPLAY/DescriptionAlso required AAAAAL
Page 88 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters2.7.1.2. Maximum VolumeThe maximum volume of the vessel. Enter the vessel volume corresponding to High Calibration Point. For example, if your maximum vessel volume is 8000 L, enter a value of 8000. Volume units are defined by the user but are not explicitly stated in the SITRANS LR250 2.7.1.3. Dimension AThe height of the vessel bottom when the bottom is conical, pyramidal, parabolic, spherical, or flat -sloped. If the vessel is horizontal with parabolic ends, the depth of the end. See Vessel Shape (2.7.1.1.) for an illustration.2.7.1.4. Dimension LLength of the cylindrical section of a horizontal parabolic end vessel. See Vessel Shape (2.7.1.1.) for an illustration.2.7.2. Table 1-8If your vessel shape is more complex than any of the preconfigured shapes, you can define the shape as a series of segments. A value is assigned to each level breakpoint and a corresponding value is assigned to each volume breakpoint. Level values are defined in Units (2.2.1.). Volume units are defined by the user but are not explicitly stated in the SITRANS LR250.Values Range: 0.0000 to 99999Default: 100.0Related ParametersLow Calibration Pt. (2.3.1.)High Calibration Pt. (2.3.2.)Vessel Shape (2.7.1.1.) Values Range: 0.0000 to 99999 mmDefault: 0.0Related Parameters Units (1.4.)Vesse l Sh ape (2 .7.1.1. )Values Range: 0.0000 to 99999 mmDefault: 0.0Related Parameters Units (1.4.)Vesse l Sh ape (2 .7.1.1. )Note: Linearization Table must be selected in Vesse l Shape (2.7.1.1. ) in order for level/volume values to be transferred.Level Values Range: 0.0000 to 99999 mmDefault: 0.0Volume Values Range: 0.0000 to 99999Default: 0.0
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 89mmmmmParametersEnter up to 32 level breakpoints, where the corresponding volume is known. The values corresponding to 100% and 0% levels must be entered. The breakpoints can be ordered from top to bottom, or the reverse. Breakpoints are grouped into four tables: Table 1-8, Table 9-16, Table 17-24, and Table 25-32.Entering breakpoints via SIMATIC PDM:• See Using Linearization via the Quick Start wizard on page 45.Entering breakpoints via the handheld programmer:a) The default unit for level values is m: to change it navigate to Setup (2.) > Sensor (2.2.) > Units (2.2.1.), and select the desired unit.b) Navigate to Setup (2.) > Linearization (2.7.) > Maximum Volume (2.7.1.2.), and enter the value.c) Go to the appropriate table for the particular breakpoint you wish to adjust: for example, go to Table 1-8 for breakpoint 1. d) Under Table 1-8, go to Level 1 (2.7.2.1.) to enter the level value for the breakpoint 1. e) Under Table 1-8, go to Volume 1 (2.7.2.2.) to enter the volume value for the breakpoint 1f) Repeat steps c) to e), till values have been entered for all required breakpoints.2.7.2.1. Level 1a) Press RIGHT arrow to open Edit mode.b) Enter level value and press RIGHT arrow to accept it.c) Press Down ARROW to move to corresponding volume breakpoint.2.7.2.2. Volume 1a) Press RIGHT arrow to open Edit mode.b) Enter volume value and press RIGHT arrow to accept it.c) Press Down ARROW to move to next level breakpoint.Example (values are for example purposes only)2.7.3. Table 9-162.7.4. Table 17-242.7.5. Table 25-32419.5950Breakpoint number321Breakpoint NumberLevel value (m)Volume value (l)100255003 9 30004 19.5 8000Levelvalue
Page 90 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters2.8. Signal Processing2.8.1. Near RangeThe range in front of the device (measured from the sensor reference point) within which any echoes will be ignored. This is sometimes referred to as blanking or a dead zone. The factory setting is 50 mm past the end of the horn, and the range is dependent on the horn type.2.8.2. Far RangeAllows the material level to drop below Low Calibration Point without generating a Loss of Echo (LOE) state. See Sensor Mode (2.2.2.) on page 79 for an illustration. Use this feature if the measured surface can drop below the Low Cal. Point in normal operation. Note: Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated.Values Range: 0 to 20 m (0 to 65.6 ft)Default depends on antenna.Examples: 1.5" horn 0.185 m (7.28")4" horn with 100 mm extension 0.270 m (10.62")Related parameters Units (1.4.)ValuesRange: Min. = Low Calibration Pt.Max. = 23 m (75.45 ft)Default: Value for Low Calibration Pt. + 1 m (3.28 ft)Related parameters Units (1.4.)
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 91mmmmmParameters2.8.3. Propagation FactorCompensates for the change in microwave velocity due to propagation within a metal stillpipe instead of in free space.2.8.4. Echo select2.8.4.1. AlgorithmSelects the algorithm to be applied to the echo profile to extract the true echo. 2.8.4.2. Position DetectDefines where on the echo the distance measurement is determined. See Position Detect (2.8.4.2.) on page 127 for more detail.If the vessel bottom is being reported as the level instead of the actual material level (at low level conditions), or if the dielectric constant of the liquid to be monitored is less than 3, we recommend setting Position to Hybrid and CLEF Range (2.8.4.4.) to 0.5 m (1.64 ft). Notes: • When operating in a stillpipe, values for CLEF Range (2.8.4.4.) on page 92, and for the propagation factor, should be set according to the pipe size. See the table below.• For reliable results the horn size must be close to the pipe size.Values Range: 0.3 to 1.5 depending on pipe size.Default: 1.0000Nominal Pipe Sizea)a) Since pipe dimensions may vary slightly, the propagation factor may also vary.40 mm (1.5”) 50 mm (2”) 80 mm (3”) 100 mm (4”)Propagation Factor 0.9828 0.990 0.991 0.9965CLEF Range (2.8.4.4.) settingsLow Cal Pt. – 700 mmLow Cal Pt. – 700 mmLow Cal Pt. – 1000 mmLow Cal Pt. – 1000 mmOptions*tFtrue First echoLLargest echo BLF Best of First or Largest echo OptionsCenter* Hybrid (Center and CLEF)CLEF (Constrained Leading Edge Fit)Related parameters CLEF Range (2.8.4.4.)
Page 92 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters2.8.4.3. Echo Threshold Sets the minimum echo confidence that the echo must meet in order to prevent a Loss of Echo condition and the expiration of the Fail-safe (LOE) timer. When Confidence (2.8.6.1.) exceeds Echo Threshold (2.8.4.3.), the echo is accepted as a valid echo and is evaluated. Use this feature when an incorrect material level is reported. 2.8.4.4. CLEF RangeUsed mainly to allow correct level reporting for low dK materials which may otherwise cause an incorrect reading in an empty or almost empty vessel.CLEF range is the level below which the CLEF algorithm is used when Hybrid is selected in Position Detect (2.8.4.2.). Above that point the Center algorithm is used. For more detail see Position Detect (2.8.4.2.) on page 127).In applications with low dK materials we recommend setting CLEF Range to 0.5 m (1.64 ft) and Position Detect (2.8.4.2.) to Hybrid. 2.8.5. SamplingProvides a method of checking the reliability of a new echo before accepting it as the valid reading, based on numbers of samples above or below the currently selected echo.2.8.5.1. Echo LockSelects the measurement verification process. For radar applications, Material Agitator is the most often-used setting, to avoid agitator blade detection. Values Range: 0 to 99Default: 5Related Parameters Timer (2.5.2.)Values Range: 0 to 20 m (0 to 65.6 ft)Default: 0.00 mRelated parameters Position Detect (2.8.4.2.) Note: Ensure the agitator is always running while SITRANS LR250 is monitoring the vessel, to avoid stationary blade detection.OptionsLock OffMaximum Verification (not recommended for radar)*Material AgitatorTotal Lock (not recommended for radar)Related parametersFill Rate (2.4.2.)Empty rate (2.4.3.)Sampling Up (2.8.5.2.)Sampling Down (2.8.5.3.)
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 93mmmmmParameters2.8.5.2. Sampling UpSpecifies the number of consecutive echoes that must appear above the echo currently selected, before the measurement is accepted as valid. 2.8.5.3. Sampling DownSpecifies the number of consecutive echoes that must appear below the echo currently selected, before the measurement is accepted as valid. 2.8.6. Echo Quality2.8.6.1. ConfidenceIndicates echo reliability: higher values represent better echo quality. The display shows the echo confidence of the last measurement. Echo Threshold (2.8.4.3.) defines the minimum criterion for echo confidence.Open the menu Device – Echo Profile Utilities and click on the tab Echo Profile. 2.8.6.2. Echo StrengthDisplays the absolute strength (in dB above 1 µV rms) of the echo selected as the measurement echo.Open the menu Device – Echo Profile Utilities and click on the tab Echo Profile. 2.8.6.3. Noise AverageDisplays the average ambient noise (in dB above 1 µV rms) of a noise profile. Noise level is a combination of transient noise and receiving circuitry. After a measurement, the values from the previous noise shot will be displayed. Values Range: 1 to 50Default: 5 Values Range: 1 to 50Default: 2 Values (view only) 0 to 99---- Shot not usedRelated Parameters Echo Threshold (2.8.4.3.)Values (view only) –20 to 99
Page 94 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters2.8.7. TVT setup2.8.7.1. Auto False Echo SuppressionUsed together with Auto False Echo Suppression Range (2.8.7.2.) to screen out false echoes in a vessel with known obstructions. A ’learned TVT’ (time varying threshold) replaces the default TVT over a specified range. See Auto False Echo Suppression (2.8.7.1.) on page 130 for a more detailed explanation.a) Determine Auto False Echo Suppression Range. Measure the actual distance from the sensor reference point to the material surface using a rope or tape measure.b) Subtract 0.5 m (20") from this distance, and use the resulting value.Note: Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated.Notes: • Make sure material level is below all known obstructions when Auto False Echo Suppression is used to learn the echo profile. (An empty or almost empty vessel is recommended.)• Note the distance to material level when Auto False Echo learns the environment. Set Auto False Echo Suppression Range to a shorter distance to avoid the material echo being screened out.• Set Auto False Echo Suppression and Auto False Echo Suppression Range during startup, if possible.• If the vessel contains an agitator it should be running. • Before adjusting these parameters, rotate the instrument for best signal (lower false-echo amplitude).Before Auto False Echo Suppression default TVTTVT Hover LevelLevel (db)echo markermaterial levelfalse echo
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 95mmmmmParametersTo set Auto False Echo Suppression via SIMATIC PDM:Open the menu Device – Echo Profile Utilities and click on the tab Auto False Echo Suppression. (For more detailed instructions see Auto False Echo Suppression on page 52.)To set Auto False Echo Suppression via the handheld programmer:c) Go to Auto False Echo Suppression Range (2.8.7.2.) and enter the value calculated in step b).d) Go to Auto False Echo Suppression (2.8.7.1.) and press RIGHT arrow to open Edit Modee) Select Learn. The device will automatically revert to On (Use Learned TVT) after a few seconds.OptionsOFF Default TVT will be used.* ON ’Learned’ TVT will be used.LEARN ’Learn’ the TVT.After Auto False Echo Suppression learned TVT material levelfalse echoAuto False Echo Suppression Rangeecho markerLevel (db)default TVT
Page 96 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters2.8.7.2. Auto False Echo Suppression RangeSpecifies the range within which Learned TVT is used (see Auto False Echo Suppression (2.8.7.1.) on page 130 for more detail). a) Calculate range according to Auto False Echo Suppression (2.8.7.1.) steps a) and b).b) Press RIGHT arrow to open Edit mode.c) Enter the new value and press RIGHT arrow to accept it.d) Set Auto False Echo Suppression (2.8.7.1.).2.8.7.3. Hover Level Defines how high the TVT (Time Varying Threshold) is placed above the noise floor of the echo profile, as a percentage of the difference between the peak of the largest echo in the profile and the noise floor. See Before Auto False Echo Suppression on page 94 for an illustration.When the device is located in the center of the vessel, the TVT hover level may be lowered to increase the confidence level of the largest echo.2.8.7.4. Shaper ModeEnables/disables the TVT shaper.2.8.8. TVT shaperAdjusts the TVT (Time Varying Threshold) at a specified range (breakpoint on the TVT). This allows you to reshape the TVT to avoid unwanted echoes. There are 40 breakpoints arranged in 5 groups. (We recommend using SIMATIC PDM to access this feature.)Values Range: 0.00 to 20.00 mDefault: 1.0 0 mRelated parameters Units (1.4.)Values Range: 0 to 100%Default: 40%Options ON*OFFNotes:• The range is –100 to 100 bits. With 2 bits per dB this gives a range of –50 to 50 dB.•Shaper Mode (2.8.7.4.) must be turned ON in order for TVT shaper points to be transferred
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 97mmmmmParametersTo use TVT shaper via SIMATIC PDM: a) Go to Level Meter > Setup > Signal Processing > TVT setup > Shaper Mode and select On.b) Open the menu Device – Echo Profile Utilities and click on TVT Shaper. For more detail see page 51.To use TVT shaper via LUI (local user interface):a) Go to Shaper Mode (2.8.7.4.) and select On.b) Go to TVT Breakpoint 1-9 (2.8.8.1.).c) Open Shaper 1 and enter the TVT Offset value (between –50 and 50).d) Go to the next Shaper point and repeat steps c) and d) till all desired breakpoint values have been entered.2.8.8.1. TVT Breakpoint 1-92.8.8.2. TVT Breakpoint 10-182.8.8.3. TVT Breakpoint 19-272.8.8.4. TVT Breakpoint 28-362.8.8.5. TVT Breakpoint 37-402.8.9. Measured ValuesRead only. Allows you to view measured values for diagnostic purposes To access measured values via SIMATIC PDM:Open the menu View – Process Variables. 2.8.9.1. Level MeasurementThe value for level. 2.8.9.2. Space MeasurementThe value for space. 2.8.9.3. Distance MeasurementThe value for distance. 2.8.9.4. Volume MeasurementThe value for volume. Values Range: –50 to 50 dBDefault: 0 dBValues Range: –50 to 50 dBDefault: 0 dBValues Range: –50 to 50 dBDefault: 0 dBValues Range: –50 to 50 dBDefault: 0 dBValues Range: –50 to 50 dBDefault: 0 dB
Page 98 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters3. Diagnostics3.1. Echo ProfileAllows you to request the current echo profile either locally via the handheld programmer, or remotely via SIMATIC PDM, or AMS Device Manager. (For more detail see Echo Processing on page 126.)To request a profile via SIMATIC PDM open the menu Device – Echo Profile Utilities. (For more detail see Echo Profile Utilities on page 49.)To request a profile via the handheld programmer: a) In PROGRAM mode, navigate to LEVEL METER > DIAGNOSTICS (3) > ECHO PROFILE (3.1)b) Press RIGHT arrow to request a profile.(For more detail see Requesting an Echo Profile on page 38.)3.2. Electronics Temperature3.2.1. Current Internal TemperatureRead only. Displays (in degrees C) the current temperature on the circuit board recorded by the internal electronics. For access via SIMATIC PDM open the menu View – Process Variables and check the field Electronics Temperature.3.2.2. Highest valueRead only. Displays (in degrees C) the maximum temperature recorded by the internal electronics. The high and low values are maintained over a power cycle. Via SIMATIC PDM navigate to Maintenance and Diagnostics > Electronics Temperature.3.2.3. Lowest valueRead only. Displays (in degrees C) the minimum temperature recorded by the internal electronics. The high and low values are maintained over a power cycle. Via SIMATIC PDM navigate to Maintenance and Diagnostics > Electronics Temperature.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 99mmmmmParameters4. Service4.1. Master ResetResets all parameter to factory defaults, with the following exceptions:•Device Address (5.1.) remains unchanged.•Write Protect (6.2.1.) and PIN to Unlock (6.2.2.) values are not reset. •Auto False Echo Suppression (2.8.7.1.) learned TVT is not lost. To perform a reset to factory defaults via SIMATIC PDM, open the menu Device – Master Reset and click on Factory Defaults.4.2. Remaining Device LifetimeThe device tracks itself based on operating hours and monitors its predicted lifetime. You can modify the expected device lifetime, set up schedules for maintenance reminders, and acknowledge them. The maintenance warnings and reminders are available through HART communications. This information can be integrated into an Asset Management system. For optimal use, we recommend that you use SIMATIC PCS7 Asset Management Software in conjunction with SIMATIC PDM.To access these parameters via SIMATIC PDM:• Open the menu Device – Maintenance and select the Remaining Device Lifetime tab.• After modifying values/units as required, click on Write to accept the change, and Read to view the effect of the change.• Click on Snooze to add a year to the Total Expected Device Life.Note: Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated.Note: Following a reset to Factory Defaults, complete reprogramming is required.Options *Idle or Done (Return to previous menu)Factory Defaults Notes: • Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated.• Four sets of parameters allow you to monitor the Device/Sensor Lifetimes and set up Maintenance/Service schedules, based on operating hours instead of a calendar-based schedule. See also Remaining Sensor Lifetime (4.3.), Service Schedule (4.4.), and Calibration Schedule (4.5.).• Performing a reset to Factory Defaults will reset all the Maintenance Schedule parameters to their factory defaults.• The device operates in years. To view Remaining Device Lifetime parameters in hours or days (via SIMATIC PDM only) see Lifetime Expected (4.2.1.).
Page 100 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters Time Units4.2.1. Lifetime ExpectedAllows you to override the factory default.4.2.2. Time in OperationRead only. The amount of time the device has been operating. 4.2.3. Remaining LifetimeRead only. Lifetime Expected (4.2.1.) less Time in Operation (4.2.2.).Optionsa)a) Selectable only via SIMATIC PDM.Hours; days; yearsDefault: yearsNote: The device always operates in years. Changing the units affects only the parameter view of the Remaining Device Lifetime parameters in SIMATIC PDM.ValuesUnitsa): hours, days, yearsa) Units are selectable only via SIMATIC PDM.Range: 0 to 20 yearsDefault: 10.00 years
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 101mmmmmParameters4.2.4. Reminder ActivationAllows you to enable a maintenance reminder.a) First set the values in Reminder 1 (Required) (4.2.5.)/Reminder 2 (Demanded) (4.2.6.).b) Select the desired Reminder Activation option.4.2.5. Reminder 1 (Required)If Remaining Lifetime (4.2.3.) is equal to or less than this value, the device generates a Maintenance Required reminder.a) Modify values as required.b) Set Reminder Activation (4.2.4.) to the desired option.4.2.6. Reminder 2 (Demanded) If Remaining Lifetime (4.2.3.) is equal to or less than this value, the device generates a Maintenance Demanded reminder.a) Modify values as required.b) Set Reminder Activation (4.2.4.) to the desired option.4.2.7. Maintenance StatusIndicates which level of maintenance reminder is active.In SIMATIC PDM, open the menu View – Device Status, click on the Maintenance tab, and check the Device Lifetime Status window.Note: To modify this parameter via SIMATIC PDM it must be accessed via the pull-down menu Device – Maintenance. OptionsReminder 1 (Maintenance Required)Reminder 2 (Maintenance Demanded)Reminders 1 and 2*OFFValues Range: 0 to 20 yearsDefault: 0.164 yearsValues Range: 0 to 20 yearsDefault: 0.019 years
Page 102 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters4.2.8. Acknowledge StatusIndicates which level of maintenance reminder has been acknowledged.In SIMATIC PDM, open the menu View – Device Status, click on the Maintenance tab, and check the Device Lifetime Status window.4.2.9. Acknowledge Acknowledges the current maintenance reminder.To acknowledge a reminder via SIMATIC PDM: a) Open the menu View – Device Status and click on the tab Maintenance.b) In the Device Lifetime section, click on Acknowledge Warnings.To acknowledge a reminder via the handheld programmer: a) Press RIGHT arrow twice to open parameter view and activate Edit Mode.b) Press RIGHT arrow to acknowledge the reminder.4.3. Remaining Sensor LifetimeThe device monitors the predicted lifetime of the sensor (the components exposed to the vessel environment). You can modify the expected sensor lifetime, set up schedules for maintenance reminders, and acknowledge them. To access these parameters via SIMATIC PDM:• Open the menu Device – Maintenance and select the Remaining Sensor Lifetime tab.• After modifying values/units as required, click on Write to accept the change, and Read to view the effect of the change.•Click on Snooze to add a year to the Total Expected Sensor Life.•Click on Sensor Replaced to restart the timer and clear any fault messages.Notes: • Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated.• Four sets of parameters allow you to monitor the Device/Sensor Lifetimes and set up Maintenance/Service schedules, based on operating hours instead of a calendar-based schedule. See also Remaining Device Lifetime (4.2.), Service Schedule (4.4.), and Calibration Schedule (4.5.).• Performing a reset to Factory Defaults will reset all the Maintenance Schedule parameters to their factory defaults.• The device operates in years. To view Remaining Sensor Lifetime parameters in hours or days (via SIMATIC PDM only) see Lifetime Expected (4.3.1.).
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 103mmmmmParameters Time Units4.3.1. Lifetime ExpectedAllows you to override the factory default.4.3.2. Time in OperationThe amount of time the sensor has been operating. Can be reset to zero after performing a service or replacing the sensor.To reset to zero:• In SIMATIC PDM, open the menu Device – Maintenance, click on the Remaining Sensor Lifetime tab, and click on Sensor Replaced to restart the timer and clear any fault messages.• Via the handheld programmer, manually reset Time in Operation (4.3.2.) to zero.Optionsa)a) Selectable only via SIMATIC PDM.Hours; days; yearsDefault: yearsNote: The device always operates in years. Changing the units affects only the parameter view of Remaining Sensor Life parameters in SIMATIC PDM.ValuesUnitsa): hours, days, yearsa) Units are selectable only via SIMATIC PDM.Range: 0 to 20 yearsDefault: 10.00 years
Page 104 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters4.3.3. Remaining LifetimeRead only. Lifetime Expected (4.3.1.) less Time in Operation (4.3.2.).4.3.4. Reminder ActivationAllows you to enable a maintenance reminder.a) First set the values in Reminder 1 (Required) (4.3.5.)/Reminder 2 (Demanded) (4.3.6.).b) Select the desired Reminder Activation option.4.3.5. Reminder 1 (Required)If Remaining Lifetime (4.3.3.) is equal to or less than this value, the device generates a Maintenance Required reminder. a) Modify values as required.b) Set Reminder Activation (4.3.4.) to the desired option. 4.3.6. Reminder 2 (Demanded)If Remaining Lifetime (4.3.3.) is equal to or less than this value, the device generates a Maintenance Demanded reminder.a) Modify values as required. b) Set Reminder Activation (4.3.4.) to the desired option.4.3.7. Maintenance StatusIndicates which level of maintenance reminder is active.In SIMATIC PDM, open the menu View – Device Status, click on the Maintenance tab, and check the Sensor Lifetime Status window.Note: To modify this parameter via SIMATIC PDM it must be accessed via the pull-down menu Device – Maintenance. OptionsReminder 1 (Maintenance Required)Reminder 2 (Maintenance Demanded)Reminders 1 and 2*OFFValues Range: 0 to 20 yearsDefault: 0.164 yearsValues Range: 0 to 20 yearsDefault: 0.019 years
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 105mmmmmParameters4.3.8. Acknowledge StatusIndicates which level of maintenance reminder has been acknowledged.In SIMATIC PDM, open the menu View – Device Status, click on the Maintenance tab and check the Sensor Lifetime Status window.4.3.9. Acknowledge Acknowledges the current maintenance reminder.To acknowledge a reminder via SIMATIC PDM: a) Open the menu View – Device Status and click on the Maintenance tab.b) In the Sensor Lifetime section click on Acknowledge Warnings.To acknowledge a reminder via the handheld programmer: a) Press RIGHT arrow twice to open parameter view and activate Edit Mode.b) Press RIGHT arrow to acknowledge the reminder.4.4. Service ScheduleThe device tracks service intervals based on operating hours and monitors the predicted lifetime to the next service. You can modify the Total Service Interval, set schedules for maintenance reminders, and acknowledge them.The maintenance warnings and reminders are communicated to the end user through status information. This information can be integrated into any Asset Management system. For optimal use, we recommend that you use SIMATIC PCS7 Asset Management Software in conjunction with SIMATIC PDM.To access these parameters via SIMATIC PDM:• Open the menu Device – Maintenance and select the Service Schedule tab.• After modifying values/units as required, click on Write to accept the change, and Read to view the effect of the change.•Click on Service Performed to restart the timer and clear any fault messages.(see next page for an illustration)Notes: • Four sets of parameters allow you to monitor the Device/Sensor Lifetimes and set up Maintenance/Service schedules, based on operating hours instead of a calendar-based schedule. See also Remaining Device Lifetime (4.2.), Remaining Sensor Lifetime (4.3.), and Calibration Schedule (4.5.).• Performing a reset to Factory Defaults will reset all the Maintenance Schedule parameters to their factory defaults.• The device operates in years. To view Service Interval parameters in hours or days (via SIMATIC PDM only) see Service interval (4.4.1.).
Page 106 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters Time Units4.4.1. Service intervalUser-configurable recommended time between product inspections.4.4.2. Time since Last ServiceTime elapsed since last service. Can be reset to zero after performing a service. To reset to zero:• In SIMATIC PDM, open the menu Device – Maintenance, click on the Service Schedule tab, and click on Service Performed to restart the timer and clear any fault messages.• Via the handheld programmer, manually reset Time since Last Service (4.4.2.) to zero.Optionsa)a) Selectable only via SIMATIC PDM.Hours; days; yearsDefault: yearsNote: The device always operates in years. Changing the units affects only the parameter view of the Service Interval parameters in SIMATIC PDM.ValuesUnitsa): hours, days, yearsa) Units are selectable only via SIMATIC PDM.Range: 0 to 20 yearsDefault: 1.0 year
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 107mmmmmParameters4.4.3. Time until Next ServiceRead only. Service interval (4.4.1.) less Time since Last Service (4.4.2.).4.4.4. Reminder ActivationAllows you to enable a maintenance reminder.a) First set the values in Reminder 1 (Required) (4.4.5.)/Reminder 2 (Demanded) (4.4.6.).b) Select the desired Reminder Activation option.4.4.5. Reminder 1 (Required)If Time until Next Service (4.4.3.) is equal to or less than this value, the device generates a Maintenance Required reminder. a) Modify values as required.b) Set Reminder Activation (4.4.4.) to the desired option.4.4.6. Reminder 2 (Demanded)If Time until Next Service (4.4.3.) is equal to or less than this value, the device generates a Maintenance Demanded reminder.a) Modify values as required.b) Set Reminder Activation (4.4.4.) to the desired option.4.4.7. Maintenance StatusIndicates which level of maintenance reminder is active.Open the menu View – Device Status, click on the Maintenance tab and check the Service Schedule Status window.Note: To modify this parameter via SIMATIC PDM it must be accessed via the pull-down menu Device – Maintenance. Values* Timer OFFON - no reminders checkedON - Reminder 1 (Maintenance Required) checkedON - Reminders 1 and 2 checkedON - Reminder 2 (Maintenance Demanded) checkedValues Range: 0 to 20 yearsDefault: 0.164 yearsValues Range: 0 to 20 yearsDefault: 0.019 years
Page 108 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters4.4.8. Acknowledge StatusIndicates which level of maintenance reminder has been acknowledged.Open the menu View – Device Status, click on the Maintenance tab and check the Service Schedule Status window.4.4.9. AcknowledgeAcknowledges the current maintenance reminder.To acknowledge a reminder via SIMATIC PDM: a) Open the menu View – Device Status and click on the Maintenance tab.b) In the Service Schedule Status section click on Acknowledge Warnings.To acknowledge a reminder via the handheld programmer: a) Press RIGHT arrow twice to open parameter view and activate Edit Mode.b) Press RIGHT arrow to acknowledge the reminder.4.5. Calibration ScheduleThe device tracks calibration intervals based on operating hours and monitors the predicted lifetime to the next calibration. You can modify the Total Calibration Interval, set schedules for maintenance reminders, and acknowledge them.To access these parameters via SIMATIC PDM:• Open the menu Device – Maintenance and select the Calibration Schedule tab.• After modifying values/units as required, click on Write to accept the change, and Read to view the effect of the change.•Click on Calibration Performed to restart the timer and clear any fault messages.Notes: • Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated.• Four sets of parameters allow you to monitor the Device/Sensor Lifetimes and set up Maintenance/Service schedules, based on operating hours instead of a calendar-based schedule. See also Remaining Device Lifetime (4.2.), Remaining Sensor Lifetime (4.3.), and Service Schedule (4.4.).• Performing a reset to Factory Defaults will reset all the Maintenance Schedule parameters to their factory defaults.• The device operates in years. To view Calibration Interval parameters in hours or days (via SIMATIC PDM only) see Calibration Interval (4.5.1.).
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 109mmmmmParameters Time Units4.5.1. Calibration IntervalUser-configurable recommended time between product calibrations.Optionsa)a) Selectable only via SIMATIC PDM.Hours; days; yearsDefault: yearsNote: The device always operates in years. Changing the units affects only the parameter view of the Calibration Interval parameters in SIMATIC PDM.ValuesUnitsa): hours, days, yearsa) Units are selectable only via SIMATIC PDM.Range: 0 to 20 yearsDefault: 1.0 year
Page 110 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters4.5.2. Time since Last CalibrationTime elapsed since last calibration. Can be reset to zero after performing a calibration.To reset to zero:• In SIMATIC PDM, open the menu Device – Maintenance, click on the Calibration Schedule tab, and click on Calibration Performed to restart the timer and clear any fault messages.• Via the handheld programmer, manually reset Time since Last Calibration (4.5.2.) to zero.4.5.3. Time until Next CalibrationRead only. Calibration Interval (4.5.1.) less Time since Last Calibration (4.5.2.).4.5.4. Reminder ActivationAllows you to enable a maintenance reminder.a) First set the values in Reminder 1 (Required) (4.3.5.)/Reminder 2 (Demanded) (4.5.6.).b) Select the desired Reminder Activation option.4.5.5. Reminder 1 (Required)If Time until Next Calibration (4.5.3.) is equal to or less than this value, the device generates a Maintenance Required reminder. a) Modify values as required.b) Set Reminder Activation (4.5.4.) to the desired option.Note: To modify this parameter via SIMATIC PDM it must be accessed via the pull-down menu Device – Maintenance. Values* Timer OFFON - no reminders checkedON - Reminder 1 (Maintenance Required) checkedON - Reminders 1 and 2 checkedON - Reminder 2 (Maintenance Demanded) checkedValues Range: 0 to 20 yearsDefault: 0.164 years
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 111mmmmmParameters4.5.6. Reminder 2 (Demanded)If Time until Next Calibration (4.5.3.) is equal to or less than this value, the device generates a Maintenance Demanded reminder.a) Modify values as required.b) Set Reminder Activation (4.5.4.) to the desired option.4.5.7. Maintenance StatusIndicates which level of maintenance reminder is active.In SIMATIC PDM, open the menu View – Device Status, click on the Maintenance tab and check the Calibration Schedule Status window.4.5.8. Acknowledge StatusIndicates which level of maintenance reminder has been acknowledged.In SIMATIC PDM, open the menu View – Device Status, click on the Maintenance tab and check the Calibration Schedule Status window.4.5.9. AcknowledgeAcknowledges the current maintenance reminder.To acknowledge a reminder via SIMATIC PDM: a) Open the menu View – Device Status and click on the Maintenance tab.b) In the Calibration Schedule Status section click on Acknowledge Warnings.To acknowledge a reminder via the handheld programmer: a) Press RIGHT arrow twice to open parameter view and activate Edit Mode.b) Press RIGHT arrow to acknowledge the reminder.4.6. Manufacture DateThe date of manufacture of the SITRANS LR250 (yy mm dd).4.7. Powered HoursDisplays the number of hours the unit has been powered up since manufacture.In SIMATIC PDM, open the menu Device – Wear.4.8. Power-on ResetsThe number of power cycles that have occurred since manufacture.In SIMATIC PDM, open the menu Device – Wear.Values Range: 0 to 20 yearsDefault: 0.019 years
Page 112 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters4.9. LCD Fast ModeEnables a faster rate of measurement from the device by disabling most of the display area. Only the bar graph will be refreshed when LCD Fast Mode is set to ON.4.10. LCD Contrast The factory setting is for optimum visibility at room temperature and in average light conditions. Extremes of temperature will lessen the contrast. Adjust the value to improve visibility in different temperatures and light conditions. Change the value in small steps to ensure you can continue to read the display.4.11. Memory TestAllows verification of the RAM, EEPROM, and Flash memory of the SITRANS LR250.• Press RIGHT arrow to edit then press any numeric key from 1 to 9 to activate the test. • The reading will display BUS and then the test result text.Notes: • LCD Fast Mode takes effect only after 30 minutes of inactivity. (Each time the device is powered up, a further 30 minutes of inactivity is required.)• LCD Fast Mode affects Measurement mode only; it has no effect on Navigation mode. Values ON or OFFDefault: OFFValues Range: 0 (High contrast) to 20 (Low contrast). Default: 4LCD DisplayIDLE No test in progress.BUSY Test in progress.PASS Memory test successful.FAIL Test failed.Err1 Test returned unexpected results.P Oxcafe Test passed with result data.F Oxcafe Test failed with result data.Handheld programmer entry to Any numeric key from 1 to 9 activates test.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 113mmmmmParameters5. Communication5.1. Device Address Sets the device address or poll ID on a HART network. Any address other than 0 will cause the output current to be a fixed value, and the current will not indicate the reading.To reset Device Address via SIMATIC PDM:• Open the project in Process Device Network View then right-click on the device.•Go to Object Properties > Connection to access the field Short Address.6. Security6.1. Remote Access6.1.1. Access ControlEnables /disables the read/write access to parameters via remote communications.Note: Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated.Values Range: 0 to 15Default: 0Note: Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated.Note: If access control is changed to limit remote access, it can only be reset via the handheld programmer. OptionsRead only No changes are permitted via remote communica-tions.*Read Write Changes are permitted.RestrictedSets the status to Read only, with the potential for another HART device to change this parameter only, via remote communications.
Page 114 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmParameters6.2. Local Access6.2.1. Write ProtectPrevents any changes to parameters via the handheld programmer. • To turn Lock On, key in any value other than the Unlock Value stored in PIN to Unlock (6.2.2.).• To turn Lock Off, key in the Unlock Value stored in PIN to Unlock (6.2.2.).6.2.2. PIN to UnlockStores the value to be entered in Write Protect (6.2.1.) to unlock programming. If Write Protect (6.2.1.) is set to a different value PIN to Unlock (6.2.2.) does not display the Unlock value7. LanguageSelects the language to be used on the LCD.Note: This lock affects only the handheld programmer. A remote master can change configuration if Access Control (6.1.1.) is set to allow this.OptionsRange: 0 to 9999*Unlock value (stored in PIN to Unlock (6.2.2.) Lock OffAny other value Lock On Notes: • Do not lose your Unlock Value: it cannot be displayed once Write Protect (6.2.1.) has been set to a different value.• Valid only for operation via the handheld programmer.• A reset to Factory Defaults will not restore the unlock value at time of shipping.Handheld Programmer ValuesRange: 0 to 9999Value when shipped: 1954. Not restored by a reset to Factory Defaults.– – – – Display when Lock is onOptions*EnglishDeutschFrançaisEspañol
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 115mmmmmA: Parameter ListAppendix A: Alphabetical Parameter ListNote: Maintenance Parameters are not listed below. See Remaining Device Lifetime on page 99, Remaining Sensor Lifetime on page 102, Service Schedule on page 105, and Calibration Schedule on page 108 for those parameters.Parameter Name (Parameter Number) Page NumberFull Scale (20 mA Setpoint) (2.6.3.) 85Start of Scale (4 mA Setpoint) (2.6.2.) 85Access Control (6.1.1.) 113Algorithm (2.8.4.1.) 91Auto False Echo Suppression (2.8.7.1.) 94Auto False Echo Suppression Range (2.8.7.2.) 96CLEF Range (2.8.4.4.) 92Confidence (2.8.6.1.) 93Control Range: upper limit (Max. mA limit) (2.6.5.) 85Control Range: lower limit (Min. mA limit) (2.6.4.) 85Current Internal Temperature (3.2.1.) 98Current Output Function (2.6.1.) 84Damping Filter (2.2.4.) 80Device Address (5.1.) 113Dimension A (2.7.1.3.) 88Dimension L (2.7.1.4.) 88Distance Measurement (2.8.9.3.) 97Echo Lock (2.8.5.1.) 92Echo Profile (3.1.) 98Echo Quality (2.8.6.) 93Echo Strength (2.8.6.2.) 93Echo Threshold (2.8.4.3.) 92Empty rate (2.4.3.) 82Far Range (2.8.2.) 90Level (2.5.3.) 83Fill Rate (2.4.2.) 82Firmware Revision (2.1.2.) 79Hard wa re Revi s i o n (2.1.1.) 79High Calibration Pt. (2.3.2.) 81Highest value (3.2.2.) 98Hover Level (2.8.7.3.) 96Language (7.) 114LCD Contrast (4.10.) 112
Page 116 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmA: Parameter ListLCD Fast Mode (4.9.) 112Level Measurement (2.8.9.1.) 97Loader Revision (2.1.3.) 79Low Calibration Pt. (2.3.1.) 80Lowest value (3.2.3.) 98mA Output Value (2.6.6.) 86Manufacture Date (4.6.) 111Master Reset (4.1.) 99Material (2.2.3.) 80Material Level (2.5.1.) 83Maximum Volume (2.7.1.2.) 88Memory Test (4.11.) 112Control Range: lower limit (Min. mA limit) (2.6.4.) 85Near Range (2.8.1.) 90PIN to Unlock (6.2.2.) 114Position Detect (2.8.4.2.) 91Powered Hours (4.7.) 111Power-on Resets (4.8.) 111Propagation Factor (2.8.3.) 91Response Rate (2.4.1.) 81Sensor Mode (2.2.2.) 79Sensor Offset (2.3.3.) 81Space Measurement (2.8.9.2.) 97Timer (2.5.2.) 83Measured Values (2.8.9.) 97Units (2.2.1.) 79Vessel Shape (2.7.1.1.) 86Volume 1 (2.7.2.2.) 89Volume Measurement (2.8.9.4.) 97Write Protect (6.2.1.) 114Parameter Name (Parameter Number) Page Number
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 117mmmmmB: TroubleshootingAppendix B: TroubleshootingCommunication Troubleshooting1) Check the following:• There is power at the instrument.• The LCD shows the relevant data.• The device can be programmed using the handheld programmer.• If any fault codes are being displayed see General Fault Codes on page 119 for a detailed list.2) Verify that the wiring connections are correct.3) See the table below for specific symptoms.If you continue to experience problems, go to our website at:www.siemens.com/LR250, and check the FAQs for SITRANS LR250, or contact your Siemens Milltronics representative.Symptom Corrective actionThe device cannot be pro-grammed via the handheld pro-grammer.• Ensure Write Protect (6.2.1.) on page 114 is set to the unlock value.You try to set a SITRANS LR250 parameter via remote communi-cations but the parameter remains unchanged.• Ensure Write Protect (6.2.1.) on page 114 is set to the unlock value, then try setting the parameter via the handheld pro-grammer.• Ensure Access Con trol (6 .1.1.) on page 113 is set to Read/Write.• Some parameters can be changed only when the device is not scanning. Try pressing Mode to put the device into PROGRAM mode.
Page 118 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmB: TroubleshootingDevice Status IconsIcon PriorityLevel Meaning1• Maintenance alarm • Measurement values are not valid2• Maintenance warning: maintenance demanded immediately• Measured signal still valid3• Maintenance required• Measured signal still valid1• Process value has reached an alarm limit2• Process value has reached a warning limit3• Process value has reached a tolerance limit1• Configuration error• Device will not work because one or more parameters/components is incorrectly configured2• Configuration warning• Device can work but one or more parameters/components is incorrectly configured3• Configuration changed• Device parameterization not consistent with parameterization in project. Look for info text.1• Manual operation (local override)• Communication is good; device is in manual mode.2• Simulation or substitute value• Communication is good; device is in simulation mode or works with substi-tute values.3• Out of operation• Communication is good; device is out of action.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 119mmmmmB: TroubleshootingGeneral Fault Codes•Data exchanged• No data exchange• Write access enabled• Write access disabledNotes: • If more than one fault is present, the device status indicator and text for each fault alternate at 2 second intervals.• Some faults cause the device to go to Fail-safe mode (Fault 52). These are indicated with an asterisk (*).General Fault Codes Code /Icon Meaning Corrective Action S: 0*The device was unable to get a measure-ment within the Fail-safe LOE Timer period. Possible causes: faulty installation, antenna material buildup, foaming/other adverse process conditions, invalid calibra-tion range.• Ensure installation details are correct. • Ensure no antenna material buildup. Clean if necessary.• Adjust process conditions to minimize foam or other adverse conditions. • Correct range calibration. • If fault persists, contact your local Sie-mens representative.S: 2*Unable to collect profile because of a power condition that is outside the operat-ing range of the device.Repair required: contact your local Sie-mens representative.S: 3 Device is nearing its lifetime limit according to the value set in Maintenance Required Limit.Replacement is recommended.Icon PriorityLevel Meaning (cont’d)
Page 120 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmB: TroubleshootingS: 4 Device is nearing its lifetime limit according to the value set in Maintenance Demanded Limit.Replacement is recommended.S: 6 Sensor is nearing its lifetime limit according to the value set in Maintenance Required Limit.Replacement is recommended.S: 7 Sensor is nearing its lifetime limit according to the value set in Maintenance Demanded Limit.Replacement is recommended.S: 8 Service interval as defined in Maintenance Required Limit has expired. Perform service.S: 9 Service interval as defined in Maintenance Demanded Limit has expired. Perform service.S: 11Internal temperature sensor failure. Repair required: contact your local Sie-mens representative.S: 12 Internal temperature of device has exceeded specifications: it is operating out-side its temperature range.• Relocate device and/or lower process temperature enough to cool device. • Inspect for heat-related damage and contact your local Siemens representa-tive if repair is required. • Fault code will persist until a manual reset is performed using SIMATIC PEM or the LCD interface.S: 17 Calibration interval as defined in Mainte-nance Required Limit has expired. Perform calibration.S: 18 Calibration interval as defined in Mainte-nance Demanded Limit has expired. Perform calibration.S: 28*Internal device failure caused by a RAM memory error. Repair required: contact your local Sie-mens representative.General Fault Codes (cont’d)Code /Icon Meaning Corrective Action
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 121mmmmmB: TroubleshootingS: 29* EEPROM damaged. Repair required: contact your local Sie-mens representative.S: 31*Flash error. Repair required: contact your local Sie-mens representative.S: 33*Factory calibration for the internal temper-ature sensor has been lost.Repair required: contact your local Sie-mens representative.S: 34*Factory calibration for the device has been lost.Repair required: contact your local Sie-mens representative.S: 35*Factory calibration for the device has been lost.Repair required: contact your local Sie-mens representative.S: 36* Unable to start microwave module. Cycle power. If fault persists, contact your local Siemens representative.S: 37* Measurement hardware problem. Cycle power. If fault persists, contact your local Siemens representative.S: 38* Failure in the device electronics.Cycle power. If fault persists, contact your local Siemens representative: repair required.S: 43*Factory calibration for the radar receiver has been lost.Repair required: contact your local Sie-mens representative.S: 45*No valid boot program detected: firmware corrupt.Repair required: contact your local Sie-mens representative.S: 48*User configuration is invalid. One or more of parameters: Low Calibration Point, High Calibration Point, Volume breakpoints, and/or Auto False-Echo Suppression, are set to invalid values.• Reconfigure the unit. • Ensure the difference between High Cali-bration Point and Low Calibration Point is not less than or equal to zero; do a Mas-ter Reset.General Fault Codes (cont’d)Code /Icon Meaning Corrective Action
Page 122 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmB: TroubleshootingOperation TroubleshootingOperating symptoms, probable causes, and resolutions.S: 49* EEPROM corrupt. Repair required: contact your local Sie-mens representative.S: 50* EEPROM corrupt. Repair required: contact your local Sie-mens representative.S: 51* EEPROM corrupt. Repair required: contact your local Sie-mens representative.S: 52Fail-safe is activated. Possible causes: 1) hardware failure2) memory failure3) Fail-safe LOE timer expired– possible causes: faulty installation, antenna mate-rial buildup, foaming/other adverse process conditions, invalid calibration range.For 3): • Correct configuration; ensure installation is correct; • no antenna buildup; • adjust process conditions to minimize foaming/other adverse conditions; • correct calibration range.If fault persists, or for 1) and 2), contact your local Siemens representative. S: 53*Configuration lost: one or more parameter settings have been lost. This may occur after a firmware upgrade causes user parameters to be reset.Restore user parameters using SIMATIC PDM.Operation TroubleshootingSymptom Cause ActionDisplay shows S: 0 LOE level or target is out of range• check specifications• check Low Calibration Pt. (2.3.1.)• increase Confidence (2.8.6.1.)Display shows S: 0 LOE material build-up on antenna • clean the antenna• re-locate SITRANS LR250General Fault Codes (cont’d)Code /Icon Meaning Corrective Action
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 123mmmmmB: TroubleshootingDisplay shows S: 0 LOElocation or aiming:• poor installation• flange not level• Auto False Echo Suppres-sion may be incorrectly applied• check to ensure nozzle is vertical• ensure end of antenna protrudes from end of nozzle•review Auto False Echo Suppression (2.8.7.1.) on page 130• ensure Auto False Echo Suppression Range is set correctlyDisplay shows S: 0 LOEantenna malfunction:• temperature too high• physical damage• excessive foam• multiple echoes• check Current Internal Temperature (3.2.1.) • use foam deflector or stillpipe• relocate•use a defoamer•set Algorithm (2.8.4.1.) to F (First echo)Reading does not change, but the level doesSITRANS LR250 processing wrong echo, for example, ves-sel wall, or structural member• re-locate SITRANS LR250• check nozzle for internal burrs or welds• rotate instrument 90°•use Auto False Echo Suppression (2.8.7.1.) if necessary: see Auto False Echo Sup-pression (2.8.7.1.) on page 130Measurement is consis-tently off by a constant amount• setting for Low Calibration Pt. (2.3.1.) not correct• setting for Sensor Offset (2.3.3.) not correct• check distance from sensor reference point to Low Calibration Pt. (2.3.1.)• check Sensor Offset (2.3.3.) Screen blankpower error• check nameplate rating against voltage supply• check power wiring or sourcetoo much load resistance• change barrier type, or• remove something from the loop, or• increase supply voltageReading erraticecho confidence weak• refer to Confidence (2.8.6.1.)•use Auto False Echo Suppression (2.8.7.1.) and Auto False Echo Suppression Range (2.8.7.2.) • use foam deflector or stillpipeliquid surface vortexed• decrease Fill Rate (2.4.2.) • relocate instrument to side pipe• increase confidence threshold in Echo Threshold (2.8.4.3.)material filling • re-locate SITRANS LR250Operation Troubleshooting (cont’d)Symptom Cause Action
Page 124 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmB: TroubleshootingReading response slow Fill Rate (2.4.2.) setting incor-rect• increase measurement response if possi-bleReads correctly but occa-sionally reads high when vessel is not full• detecting close range echo • build up near top of vessel or nozzle• nozzle problem• clean the antenna•use Auto False Echo Suppression (2.8.7.1.) and Auto False Echo Suppression Range (2.8.7.2.)Level reading lower than actual material level• material is within Near Range zone• multiple echoes processed• decrease Near Range (2.8.1.) (minimum value depends on antenna type)• raise SITRANS LR250• ensure Algorithm (2.8.4.1.) is set to F (First echo)• vessel near empty and low dK material • ensure Material (2.2.3.) selection is LIQ-UID LOW DK•set Position Detect (2.8.4.2.) to Hybrid•set CLEF Range (2.8.4.4.) to 0.5 mOperation Troubleshooting (cont’d)Symptom Cause Action
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 125mmmmmC: MaintenanceAppendix C: MaintenanceSITRANS LR250 requires no maintenance or cleaning under normal operating conditions. Under severe operating conditions, the horn antenna may require periodic cleaning. If cleaning becomes necessary:• Note the antenna material and the process medium, and select a cleaning solution that will not react adversely with either.• Remove the instrument from service and wipe the antenna clean using a cloth and suitable cleaning solution. Unit Repair and Excluded LiabilityAll changes and repairs must be done by qualified personnel, and applicable safety regulations must be followed. Please note the following:• The user is responsible for all changes and repairs made to the device.• All new components must be provided by Siemens Milltronics Process Instruments Inc.• Restrict repair to faulty components only.• Do not re-use faulty components.Replacing the antenna• If the antenna requires replacement due to damage, it may be replaced without need for re-calibration. • Changing to a different antenna type may be performed by a Siemens authorized repair center.
Page 126 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmD: Technical ReferenceAppendix D: Technical ReferencePrinciples of Operation SITRANS LR250 is a 2-wire 25 GHz pulse radar level transmitter for continuous monitoring of liquids and slurries1). Radar level measurement uses the time of flight principle to determine distance to a material surface. The device transmits a signal and waits for the return echo. The transit time is directly proportional to the distance from the material. Pulse radar uses polarized electromagnetic waves. Microwave pulses are emitted from the antenna at a fixed repetition rate, and reflect off the interface between two materials with different dielectric constants (the atmosphere and the material being monitored). Electromagnetic wave propagation is virtually unaffected by temperature or pressure changes, or by changes in the vapor levels inside a vessel. Electromagnetic waves are not attenuated by dust.SITRANS LR250 consists of an enclosed electronic circuit coupled to an antenna and process connection. The electronic circuit generates a radar signal (25 GHz) that is directed to the horn.The signal is emitted from the horn, and the reflected echoes are digitally converted to an echo profile. The profile is analyzed to determine the distance from the material surface to the sensor reference point2). This distance is used as a basis for the display of material level and mA output.Echo ProcessingProcess IntelligenceThe signal processing technology embedded in Siemens radar level devices is known as Process Intelligence.Process intelligence provides high measurement reliability regardless of the dynamically changing conditions within the vessel being monitored. The embedded Process Intelligence dynamically adjusts to the constantly changing material surfaces within these vessels.Note: Where a number follows the parameter name (for example, Algorithm (2.8.4.1.) this is the parameter access number via the handheld programmer. See Parameter Reference on page 78 for a complete list of parameters. 1) The microwave output level is significantly less than that emitted from cellular phones.2) See Dimensions on page 12 and Flanged Horn with extension on page 14.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 127mmmmmD: Technical ReferenceProcess Intelligence is able to differentiate between the true microwave reflections from the surface of the material and unwanted reflections being returned from obstructions such as seam welds or supports within a vessel. The result is repeatable, fast and reliable measurement. This technology was developed as result of field data gained over some twenty years from more than 1,000,000 installations in many industries around the world.Higher order mathematical techniques and algorithms are used to provide intelligent processing of microwave reflection profiles. This “knowledge based” technique produces superior performance and reliability.Echo SelectionTime Varying Threshold (TVT)A Time Varying Threshold (TVT) hovers above the echo profile to screen out unwanted reflections (false echoes).In most cases the material echo is the only one which rises above the default TVT.In a vessel with obstructions, a false echo may occur. See Auto False Echo Suppression (2.8.7.1.) on page 130 for more details.The device characterizes all echoes that rise above the TVT as potential good echoes. Each peak is assigned a rating based on its strength, area, height above the TVT, and reliability, amongst other characteristics.Algorithm (2.8.4.1.)The true echo is selected based on the setting for the Echo selection algorithm. Options are true First Echo, Largest Echo, or best of First and Largest. Position Detect (2.8.4.2.) The echo position detection algorithm determines which point on the echo will be used to calculate the precise time of flight, and calculates the range using the calibrated propagation velocity (see Propagation Factor (2.8.3.) for values). There are three options: •Center •CLEF (Constrained Leading Edge Fit)• Hybriddefault TVT material levelecho markerecho profile
Page 128 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmD: Technical ReferenceCenterUses center of the echo. Hybrid Uses the Center algorithm for the top part of the vessel, and the CLEF algorithm for the part nearest the vessel bottom, according to the setting for CLEF range.CLEF (Constrained Leading Edge Fit) • Uses the leading edge of the echo.• Is used mainly to process the echo from materials with a low dK value.In an almost empty flat-bottomed vessel, a low dK material may reflect an echo weaker than the echo from the vessel bottom. The echo profile shows these echoes merging. The device may then report a material level equal to or lower than emptyThe CLEF algorithm enables the device to report the level correctly.Example: CLEF off: Position set to Hybriddefault TVTvessel bottom echo selectedmaterial echoecho marker Vessel height: 1.5 m; CLEF range set to 0 (Center algorithm gives the same result.)
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 129mmmmmD: Technical ReferenceExample: CLEF enabledCLEF Range (2.8.4.4.) Determines the level below which the CLEF algorithm will be used. Above this level the Center algorithm is used.Echo Threshold (2.8.4.3.)Confidence (2.8.6.1.) describes the quality of an echo. Higher values represent higher quality. Echo Threshold defines the minimum confidence value required for an echo to be accepted as valid and evaluated.Echo Lock (2.8.5.1.)If the echo selected by Algorithm is within the Echo Lock window, the window is centered about the echo, which is used to derive the measurement. In radar applications, two measurement verification options are used:Lock Off SITRANS LR250 responds immediately to a new selected echo (within the restrictions set by the Maximum Fill / Empty Rate), but measurement reliability is affected.Material AgitatorA new measurement outside the Echo Lock Window must meet the sampling criteria before the window will move to include it. The other available options, Maximum Verification and Tot al Lock are not recommended for radar.default TVTvessel bottom echomaterial echoselectedecho markerVessel height: 1.5 m; CLEF range set to 0.5 m
Page 130 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmD: Technical ReferenceAuto False Echo Suppression (2.8.7.1.)Auto False Echo Suppression is designed to learn a specific environment (for example, a particular vessel with known obstructions), and in conjunction with Auto False Echo Suppression Range to remove false echoes appearing in front of the material echo. The material level should be below all known obstructions at the moment when Auto False Echo Suppression learns the echo profile. Ideally the vessel should be empty or almost empty, and if an agitator is present, it should be running.The device learns the echo profile over the whole measurement range and the TVT is shaped around all echoes present at that moment. Auto False Echo Suppression Range (2.8.7.2.)Auto False Echo Suppression Range specifies the range within which the learned TVT is applied. Default TVT is applied over the remainder of the range.The learned TVT screens out the false echoes caused by obstructions. The default TVT allows the material echo to rise above it.Auto False Echo Suppression Range must be set to a distance shorter than the distance to the material level when the environment was learned, to avoid the material echo being screened out.Notes: • For detailed instructions on using this feature via PDM see Auto False Echo Suppression on page 52. • For detailed instructions on using this feature via the handheld programmer see Auto False Echo Suppression (2.8.7.1.) on page 94.High Cal. Pt.= 0obstruction at 1.3 mmaterial level at 3.2 mfalse echo materialechodefault TVT sensor reference pointExample before Auto False Echo Suppression
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 131mmmmmD: Technical ReferenceMeasurement RangeNear Range (2.8.1.)Near Range programs SITRANS LR250 to ignore the zone in front of the antenna. The default blanking distance is 50 mm (1.97") from end of horn antenna.Near Range allows you to increase the blanking value from its factory default. But Auto False Echo Suppression (2.8.7.1.) is generally recommended in preference to extending the blanking distance from factory values.Far Range (2.8.2.)Far Range can be used in applications where the base of the vessel is conical or parabolic. A reliable echo may be available below the vessel empty distance, due to an indirect reflection path. Increasing Far Range to 30% or 40% can provide stable empty vessel readings.Measurement ResponseResponse Rate (2.4.1.) limits the maximum rate at which the display and output respond to changes in the measurement. There are three preset options: slow, medium, and fast.Once the real process fill/empty rate (m/s by default) is established, a response rate can be selected that is slightly higher than the application rate. Response Rate automatically adjusts the filters that affect the output response rate. Note: Units are defined in Units (2.2.1.) and are in meters by default.Response Rate (2.4.1.)Fill Rate (2.4.2.)/Empty rate (2.4.3.)Damping Filter (2.2.4.)*Slow 0.1 m/min (0.32 ft/min) 10 sMedium 1.0 m/min (3.28 ft/min) 10 sFast 10.0 m/min (32.8 ft/min) 0 sExample after Auto False Echo Suppression learned TVT material echofalse echo echo markerAuto False Echo Suppression Range set to 2 mAuto False Echo Suppression Rangedefault TVT
Page 132 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmD: Technical ReferenceDampingDamping Filter (2.2.4.) smooths out the response to a sudden change in level. This is an exponential filter and the engineering unit is always in seconds. In 5 time constants the output rises exponentially: from 63.2% of the change in the first time constant, to almost 100% of the change by the end of the 5th time constant.Analog OutputThe mA Output (current output) is proportional to material level in the range 4 to 20 mA. 0% and 100% are percentages of the full-scale reading (m, cm, mm, ft, in). Typically mA output is set so that 4 mA equals 0% and 20 mA equals 100%.When SITRANS LR250 is put into PROGRAM mode (for example, by navigating through the menu) it stops updating the output of the device (local user interface and mA Output). It stores the most recent measurement, and holds the associated readings and mA signal output. The device reverts to the parameter last addressed during the previous program session.When the device is returned to Measurement mode, the transceiver resumes operation. The reading and mA output default to the last measurement taken. The reading and associated outputs migrate to the current process level at a rate controlled by Response Rate (2.4.1.).If the device is left in PROGRAM mode for 10 minutes without input, it automatically reverts to Measurement mode.00.511.522.533.544.51234567Series1 Series2Level (m)Time (s)smoothed outputinput (level)Damping exampletime constant = 2 secondsinput (level) change = 2 m
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 133mmmmmD: Technical ReferenceSensor ModeThis parameter controls the input. Depending on the reference point used, the measurement reports either Level, Space, or Distance. By default Sensor Mode is set to Level.You also have the option to put the device out of service, in which case the device defaults to Fail-safe mode, and the reported level depends on the device type. A standard device reports the last valid reading, and a NAMUR NE 43-compliant device reports the user-defined value for Material Level (3.58 mA by default).Current Output FunctionCurrent Output Function (2.6.1.) controls the mA output and applies any relevant scaling. By default it is set to Level. Other options are Space, Distance., and Volume. (The device can carry out a volume calculation only after a vessel shape has been specified.)When a volume application type is chosen, Sensor Mode remains as Level and the mA Output is automatically converted to Volume. To view the mA reading in the secondary region of the LCD, press on the handheld programmer. Operation Description Reference pointNOSERVICEMeasurement and associated loop current not being updated. Device defaults to Fail-safe modea).a) See Fail-safe Mode on page 134.LEVEL Distance to material surface Low Calibration Point (pro-cess empty level)SPACE Distance to material surface High Calibration Point (pro-cess full level)DISTANCE Distance to material surface Sensor Reference PointLevel Space DistanceDistanceSpaceLevel20 mA100%4 mA 0%High Cal. Pt.4 mA0%20 mA 100% 4 mA0%20 mA 100% Sensor reference pointLow Cal. Pt
Page 134 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmD: Technical ReferenceLoss of Echo (LOE)A loss of echo (LOE) occurs when the calculated measurement is judged to be unreliable because the echo confidence value has dropped below the echo confidence threshold. Confidence (2.8.6.1.) describes the quality of an echo. Higher values represent higher quality. Echo Threshold (2.8.4.3.) defines the minimum confidence value required for an echo to be accepted as valid and evaluated.If the LOE condition persists beyond the time limit set in Timer (2.5.2.) the LCD displays the Service Required icon, and the text region displays the fault code S: 0 and the text LOE.If two faults are present at the same time, the fault code, error text, and error icon for each fault are displayed alternately. For example, Loss of Echo and Fail-safe. S: 0 LOE S: 52 Fail-safeFail-safe ModeThe purpose of the Fail-safe setting is to put the process into a safe mode of operation in the event of a fault or failure. The value to be reported in the event of a fault is selected so that a loss of power or loss of signal triggers the same response as an unsafe level. Timer (2.5.2.) determines the length of time a Loss of Echo (LOE) condition will persist before a Fail-safe state is activated. The default setting is 100 seconds.Material Level (2.5.1.) determines the material level to be reported when Timer (2.5.2.) expires, depending on the device type (standard or NAMUR NE 43-compliant.)Upon receiving a reliable echo, the loss of echo condition is aborted, the Service Required icon and error message are cleared, and the reading and mA output return to the current material level.STANDARD DEVICEOptions HI 20.5 mA (max. mA Limit) LO 3.8 mA (min. mA Limit) *HOLDLast valid reading VALUE User-selected value defined in Level (2.5.3.)NAMUR NE 43-COMPLIANT DEVICEOptions HI 20.5 mA (max. mA Limit) LO 3.8 mA (min. mA Limit) HOLD Last valid reading * VALUE User-selected value Level (2.5.3.), default 3.58 mA
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 135mmmmmD: Technical ReferenceMaximum Process Temperature ChartFlange Adapter versions of SITRANS LR250.Where the chart does not apply, please use your own judgement regarding the use of SITRANS LR250.See Current Internal Temperature (3.2.1.) on page 98 to monitor the Internal Temperature. If the internal temperature exceeds the maximum allowable limit, a sun shield or a longer nozzle may be required. WARNING: Internal temperature must not exceed 80 °C (176 °F). Notes: • The chart below is for guidance only. • The chart does not represent every possible process connection arrangement. For example, it will NOT apply if you are mounting SITRANS LR250 directly on a metallic vessel surface.• The chart does not take into consideration heating from direct sunshine exposure.processtemperatureAmbient Temperature (oC)Process Temperature (oC)Maximum Process Temperatures versus allowable ambient ambient temperatureinternal enclosure temperatureprocess temperature
Page 136 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmD: Technical ReferenceProcess Pressure/Temperature derating curves1)WARNINGS: • Never attempt to loosen, remove or disassemble process connection or instrument housing while vessel contents are under pressure.• This product is designated as a Pressure Accessory per Directive 97/ 23 / EC and is not intended for use as a safety device.• Materials of construction are chosen based on their chemical compatibility (or inertness) for general purposes. For exposure to specific environments, check with chemical compatibility charts before installing.• The user is responsible for the selection of bolting and gasket materials which will fall within the limits of the flange and its intended use and which are suitable for the service conditions.• Improper installation may result in loss of process pressure and/or release of process fluids and/or gases.Notes: • The Process Device Tag shall remain with the process pressure boundary assembly1). In the event the instrument package is replaced, the Process Device Tag shall be transferred to the replacement unit.• SITRANS LR250 units are hydrostatically tested, meeting or exceeding the requirements of the ASME Boiler and Pressure Vessel Code and the European Pressure Equipment Directive.• The serial numbers stamped in each process connection body, (flange, threaded, or sanitary), provide a unique identification number indicating date of manufacture.Example: MMDDYY – XXX (where MM = month, DD = day, YY = year, and XXX= sequential unit produced) Further markings (space permitting) indicate flange configuration, size, pressure class, material, and material heat code.1) The process pressure boundary assembly comprises the components that act as a barrier against pressure loss from the process vessel: that is, the combination of pro-cess connection body and emitter, but normally excluding the electrical enclosure.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 137mmmmmD: Technical ReferenceHorn Antenna or Wave Guide1.5" and 2" Threaded Versions50A, 80A and 100A Flanged Versions: JIS 10 kWARNING: Never attempt to loosen, remove or disassemble process connection or instrument housing while vessel contents are under pressure.Note: Customer to provide adequate bolting and gasketing to retain vessel pressure and provide sufficient sealing.process temperature (°C)pressure (bar, gauge)1.5”and 2" NPT/BSP GProcess Connection Series:• 51209 or 51251 series fittings.• Ensure your instrument has the process identification Tag showing one of this series, and 25517 or 25555 stamped on threaded fitting.Process Connection Series:• 51242 or 51252 series flange.• Ensure your instrument has the process identification Tag showing one of this series, and 25546, 25547, 25580 or 25581 stamped on flange.process temperature (°C)JIS 10 kpressure (bar, gauge)
Page 138 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmD: Technical ReferenceDN50, DN80, DN100, and DN150 Flanged Versions: PN16DN50, DN80, DN100, and DN150 Flanged Versions: PN40WARNING: Never attempt to loosen, remove or disassemble process connection or instrument housing while vessel contents are under pressure.Note: Customer to provide adequate bolting and gasketing to retain vessel pressure and provide sufficient sealing.Process Connection Series:• 51242 or 51252 series flange.• Ensure your instrument has the Process Identification Tag showing one of this series, and 25547, 25581, 25656, or 25657 stamped on flange.PN16pressure (bar, gauge)process temperature (°C)Process Connection Series:• 51242 or 51252 series flange.• Ensure your instrument has the Process Identification Tag showing one of this series, and 25547, 25581, 25656, or 25657 stamped on flange.process temperature (°C)PN40pressure (bar, gauge)
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 139mmmmmD: Technical Reference2", 3", and 4" Flanged Versions: 150 lb2", 3", and 4" Flanged Versions: 300 lbWARNING: Never attempt to loosen, remove or disassemble process connection or instrument housing while vessel contents are under pressure.Note: Customer to provide adequate bolting and gasketing to retain vessel pressure and provide sufficient sealing.Process Connection Series:• 51242 or 51252 series flange.• Ensure your instrument has the process identification Tag showing one of this series, and 25546 or 25580 stamped on flange.process temperature (°C)150 lbpressure (bar, gauge)Process Connection Series:• 51242 or 51252 series flange.• Ensure your instrument has the process identification Tag showing one of this series, and 25546 or 25580 stamped on flange.process temperature (°C)pressure (bar, gauge)300 lb
Page 140 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmD: Technical ReferenceLoop powerTypical Connection DrawingAllowable operating area of SITRANS LR250Curve 1 (General Purpose, Intrinsically Safe, Non-incendive)Loop Voltage versus Loop ResistanceNote: Loop voltage is the voltage at the terminals of the power supply (not the voltage at the terminals of the device).+-LR250 loop resistance RLloop current ILloop voltageVLpower supplyPower Supply Requirements010020030040050060070080090015 17 19 21 23 25 27 29Loop Voltage - VL(Source Voltage)Loop Resistance - RL(30.0V, 845 ohms)RL = 44.6 * VL - 493.4(17.8V, 300 ohms)(16.7V, 0 ohms)RL = 272.7 * VL - 4554.1Loop Voltage – VLLoop Resistance – RLALLOWABLE OPERATING AREAPower Supply Requirements
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 141mmmmmD: Technical ReferenceCurve 2 (Flameproof, Increased Safety, Explosion-proof)Loop Voltage versus Loop ResistanceStartup BehaviorNotes: • SITRANS LR250 is designed to start reliably with a power supply capable of delivering at least 25 mA.• When connected to a power supply with a current limit of < 25 mA, the LR250 may not start reliably.Power Supply Requirements05010015020025030035040015 20 25 30Loop Voltage - VL(Source Voltage)Loop Resistance - R L(30.0V, 375 ohms)RL = 14.88 * VL - 71.43(21.6V, 250 ohms)(18.2V, 0 ohms)RL = 73.53 * VL - 1338.24Power Supply RequirementsLoop Voltage – VLLoop Resistance – RLALLOWABLE OPERATING AREA05101520253035400 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34Time (seconds)Current (mA)No Current Limit Current Limited Power SupplyTypical Startup CurrentTime (seconds)Current (mA)Loop Power Supply without Current LimitLoop Power Supply with 25 mA Current LimitCurrent-limited powerNo current limit
Page 142 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmE: Application ExamplesAppendix E: Application ExamplesYou can use these examples as setup references. Enter the values in the parameter tables to select the corresponding functions.Configure the basic settings using the Quick Start wizard parameters. (These parameters are inter-related, and changes take effect only after you select YES to apply changes in the last step.) In each example, after performing a Quick Start, navigate to the other required parameters either via the handheld programmer, or using a Device Management tool (SIMATIC PDM or AMS Device Manager) and enter the appropriate values.Liquid resin in storage vessel, level measurementReturn to Measurement: press Mode to start normal operation.Note: In the applications illustrated below, values are for example purposes only.Note: Minimum distance from flange face to target is limited by Near Range (2.8.1.).Parameter type Parameter No. /Name Options/Values FunctionQuick Start Wizard parametersMaterial (1.2.) LIQUIDResponse Rate (1.3.) MED Medium =1 m/minuteUnits (1.4.) M metersOperation Mode (1.5.) LEVEL LevelLow Calibration Point (1.6.) 5 5 m (16.5 ft)High Calibration Point (1.7.) 0.5 0.5 m (1.64 ft)Apply? (Apply changes) (1.8.) YES Transfers Quick Start settings to device.Independent parametersTimer (2.5.2.) 2 2 minutesMaterial Level (2.5.1.) HI Fail-safe level set to HighTo obtain level measurement/4 to 20 mA output proportional to resin levels:Low Calibration Pt. = 5 m (16.5 ft) from sensor reference pointHigh Calibration Pt.= 0.5 m (1.64 ft) from sensor reference pointMax.fill/empty rate = 0.2 m/min (0.65 ft/min) In the event of a loss of echo: SITRANS LR250 is to go into Fail-safe High after 2 minutes.0.5 m Low CalPoint5 m100% Level0% LevelHighCalPointsensor reference point
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 143mmmmmE: Application ExamplesHorizontal vessel with volume measurementTo obtain level measurement/4 to 20 mA output proportional to vessel volume in a chemical vessel:Low Calibration Point = 3.5 m (11.48 ft) from sensor reference pointHigh Calibration Point = 0.5 m (1.64 ft) from sensor reference point Max. fill/empty rate = 0.2 m/min (0.65 ft/min) Select vessel shape, Parabolic Ends, and enter values for A and L, to obtain a volume reading instead of level.In the event of a loss of echo: SITRANS LR250 is to go into Fail-safe High after 2 minutes.Return to Measurement: press Mode to start normal operation.Note: The minimum distance from the flange face to the target is limited by Near Range (2.8.1.).Parameter type Parameter No./Name Options/Values FunctionQuick Start Wizard parame-tersMaterial (1.2.) LIQUIDResponse Rate (1.3.) MED Medium =1 m/minuteUnits (1.4.) M metersOperation Mode (1.5.) LEVEL Level is reported as Volume when a vessel shape is selected.Low Calibration Point (1.6.) 3.5 3.5 m (11.48 ft)High Calibration Point (1.7.) 0.5 0.5 m (1.64 ft)Apply? (Apply changes) (1.8.) YES Transfers Quick Start settings to device.Indepen-dent parame-tersVesse l S hape (2.7.1.1.) PAR ABOL IC EN DS Defines vessel shape.Maximum Volume (2.7.1.2.) 8000 8000 litersDimension A (2.7.1.3.) 0.8 0.8 m (2.62 ft)Dimension L (2.7.1.4.) 6 6 m (19.68 ft)Timer (2.5.2.) 2 2 minutesMaterial Level (2.5.1.) HI Fail-safe level set to Highvolume reading 3.5 m A= 0.8 mL= 6 mLow Cal Point100% = 8000 lsensorreferencepointA= 0.8 mHigh Cal Point0.5 m
Page 144 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmE: Application ExamplesApplication with StillpipeThis application is to obtain a level measurement and corresponding 4 to 20 mA output proportional to the oil level in a fuel storage vessel.Notes: •Near Range (2.8.1.) (Blanking) will be set at the factory. Check the Process Device Tag for specific values.• Suitable pipe diameters are 40 mm (1.5”) to 100 mm (4”). • The pipe diameter must be matched with the horn size. Use the largest horn size that will fit the stillpipe/bypass pipe (see Dimensions on page 12).• See Mounting on a Stillpipe or Bypass Pipe on page 22 for installation guidelines.Parameter type Parameter No./Name Options/Values FunctionQuick Start WizardMaterial (1.2.) LIQUID LOW DKResponse Rate (1.3.) MED Medium =1 m/minuteUnits (1.4.) M metersOperation Mode (1.5.) LEVELLevel is reported as Volume when a vessel shape is selected.Low Calibration Point (1.6.) 55 m (16.5 ft)High Calibration Point (1.7.) 0.5 0.5 m (1.64 ft)Apply? (Apply changes) (1.8.) YES Transfers Quick Start settings to device.Indepen-dent parametersPropagation Factor (2.8.3.)a)a) The recommended values for the propagation factor and for CLEF range are dependent on the stillpipe diameter. See Propagation Factor/Stillpipe Diameter on page 145 for val-ues.0.990 P.F. for a 50 mm (1.96") I.D. stillpipePosition Detect (2.8.4.2.) HYBRIDCLEF Range (2.8.4.4.)a4.3 4.3 m (14.10 ft)• Low Calibration Pt. is 5 m (16.5 ft) from the sensor reference point.• High Calibration Pt. is 0.5 m (1.65 ft) from the sensor reference point. • The stillpipe inside diameter is 50 mm (1.96"). • The maximum rate of filling or emptying is about 0.1 m (4")/min. 5 m 0.5 msensorreferencepointLow Cal.Pt.HighCal.Pt.50 mm I.D.vent hole
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 145mmmmmE: Application ExamplesPropagation Factor/Stillpipe DiameterNominal Pipe Size a)a) Since pipe dimensions may vary slightly, the propagation factor may also vary.40 mm (1.5”) 50 mm (2”) 80 mm (3”) 100 mm (4”)Propagation Factor 0.9828 0.990 0.991 0.9965CLEF Range (2.8.4.4.) settingsLow Cal Pt. – 700 mmLow Cal Pt. – 700 mmLow Cal Pt. – 1000 mmLow Cal Pt. – 1000 mm
Page 146 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmF: HART CommunicationsAppendix F: HART Communications Highway Addressable Remote Transducer, HART, is an industrial protocol that is superimposed on the 4-20 mA signal. It is an open standard, and full details about HART can be obtained from the HART Communication Foundation at www.hartcomm.orgSITRANS LR250 can be configured over the HART network using either the HART Communicator 375 by Fisher-Rosemount, or a software package. The recommended software package is the SIMATIC Process Device Manager (PDM) by Siemens.SIMATIC PDMThis software package is designed to permit easy configuration, monitoring, and troubleshooting of HART devices. The HART EDD for SITRANS LR250 was written with SIMATIC PDM in mind and has been extensively tested with this software.For more information, see Operating via SIMATIC PDM on page 40.HART Electronic Device Description (EDD) In order to configure a HART device, the configuration software requires the HART Electronic Device Description for the instrument in question. You can download the HART EDD for SITRANS LR250 from the product page of our website. Go to: www.siemens.com/LR250 and click on Downloads. Older versions of the library will have to be updated in order to use all the features of SITRANS LR250.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 147mmmmmF: HART CommunicationsHART Communicator 375 Menu StructureLEVEL METER1. IDENTIFICATION1. TAG2. DESCRIPTION3. MESSAGE4. INSTALLATION DATE5. DEVICE ORDER NUMBER2. SETUP1. DEVICE1. FIRMWARE REVISION2. LOADER REVISION3. HARDWARE REVISION2. INPUT1. SENSOR CALIBRATION1. MATERIAL2. SENSOR UNITS3. OPERATION4. LOW CALIBRATION PT.5. HIGH CALIBRATION PT.6. NEAR RANGE7. FAR RANGE8. PROPAG. FACTOR9. SENSOR OFFSET2. VOLUME CONVERSION1. VESSEL SHAPE2. MAXIMUM VOLUME3. DIMENSION A4. DIMENSION L3. VOLUME BREAKPOINT1. TABLE 1 – 8 (Lev./Vol. Breakpoints 1-8)2. TABLE 9 – 16 (Lev./Vol. Breakpoints 9-16)3. TABLE 17 – 24 (Lev./Vol. Breakpoints 17-24)4. TABLE 25 – 32 (Lev./Vol. Breakpoints 25-32)4. ECHO PROCESSING1. ECHO SELECT1. ALGORITHM2. POSITION DETECT3. ECHO THRESHOLD2. SAMPLING1. ECHO LOCK2. SAMPLING UP3. SAMPLING DOWN4. WINDOW3. FILTERING1. DAMPING FILTER4. TANK BOTTOM ALGORITHM1. CLEF RANGENote: HART Communicator 375 is supported by SITRANS LR250 HART.
Page 148 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmF: HART Communications ECHO PROC (continued)5. NOISE1. ECHO CONFIDENCE2. ECHO STRENGTH3. NOISE AVERAGE5. TVT SETUP1. TVT HOVER LEVEL2. AUTO FALSE ECHO SUPPRESSION3. AUTO SUPPRESSION RANGE4. SHAPER MODE6. TVT SHAPER1. SHAPER 1-9 (Shaper Points 1-9)2. SHAPER 10-18 (Shaper Points 10-18)3. SHAPER 19-27 (Shaper Points 19-27)4. SHAPER 28-36 (Shaper Points 28-36)5. SHAPER 37-40 (Shaper Points 37-40)7. RATE1. RESPONSE RATE2. FILL RATE PER MINUTE3. EMPTY RATE PER MINUTE3. OUTPUT1. MA OUTPUT1. MA OUTPUT FUNCTION2. 4 MA SETPOINT3. 20 MA SETPOINT4. MINIMUM MA LIMIT5. MAXIMUM MA LIMIT4. FAIL-SAFE1. FAILSAFE TIMER2. FAILSAFE MATERIAL LEVEL3. FAILSAFE LEVEL3. DIAGNOSTICS1. MEASURED VALUES1. CURRENT INTERNAL TEMP.2. MAX. INTERNAL TEMP.3. MIN. INTERNAL TEMP.2. REMAINING DEV.ICE LIFETIME1. TOTAL DEVICE OPERATING TIME2. REMAINING DEVICE LIFETIME3. MAINTENANCE REQUIRED LIMIT4. MAINTENANCE DEMANDED LIMIT5. MAINTENANCE ALERT ACTIVATION6. TOTAL EXPECTED DEVICE LIFE3. REMAINING SENSOR LIFETIME1. TOTAL SENSOR OPERATING TIME2. REMAINING SENSOR LIFETIME3. MAINTENANCE REQUIRED LIMIT4. MAINTENANCE DEMANDED LIMIT5. MAINTENANCE ALERT ACTIVATION6. TOTAL EXPECTED SENSOR LIFE
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 149mmmmmF: HART Communications4. SERVICE1. LCD FAST MODE2. LCD CONTRAST3. SERVICE INTERVAL1. TIME ELAPSED SINCE LAST SERVICE2. REMAINING LIFETIME3. MAINTENANCE REQUIRED LIMIT4. MAINTENANCE DEMANDED LIMIT5. MAINTENANCE ALERT ACTIVATION6. TOTAL SERVICE INTERVAL4. CALIBIBRATION INTERVAL1. TIME ELAPSED SINCE LAST CALIBRATION2. REMAINING LIFETIME3. MAINTENANCE REQUIRED LIMIT4. MAINTENANCE DEMANDED LIMIT5. MAINTENANCE ALERT ACTIVATION6. TOTAL CALIBRATION INTERVAL5. COMMUNICATION1. COMMUNICATION CONTROL6. SECURITY1. LOCK2. UNLOCK VALUE7. LANGUAGE1. LANGUAGEHART VersionSITRANS LR250 conforms to HART rev. 5.Burst ModeSITRANS LR250 does not support burst mode.HART Multidrop ModeWe do not recommend the use of HART Multidrop Mode.
Page 150 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmG: ATEX CertificatesAppendix G: ATEX CertificatesATEX Certificate SIRA 06ATEX2358XNote: AT EX certificates can be downloaded from the product page of our website at www.siemens.com/LR250.
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7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 153mmmmmG: ATEX CertificatesATEX Certificate SIRA 08ATEX1301XCERTIFICATE TO BE ADDED
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7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 155mmmmmG: ATEX Certificates
Page 156 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmH: Firmware RevisionAppendix H: Firmware Revision HistoryFirm-ware Rev.PDMEDD Rev. Date Changes1.00.03 1.00.03 25/02/2007 • Initial release1.01.00 1.01.00 27/072007 •EDDa)/SIMATIC PDM: View > Display > Distanceb) correctly reported.• EDD/SIMATIC PDM: Improved rendering of the echo profile and TVT.a) Electronic Device Descriptionb) See Sensor Mode (2.2.2.) on page 79 for an illustration of Distance.1.01.01 1.01.01 10/06/2008 • Maintenance release of firmware and EDDa).1.01.01 1.01.03 17/06/2008 • The internal EDD revision has been incremented.1.02.01 1.02.01 16/12/2008 • AMS EDD Rev. 1.02.01• Support NAMUR NE 43. • Harmonization of menu structures and parameter names across products.• Display indicates progress towards first measurement.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 157mmmmmGlossaryGlossaryaccuracy: degree of conformity of a measure to a standard or a true value.agitator: mechanical apparatus for mixing or aerating. A device for creating turbulence.algorithm: a prescribed set of well-defined rules or processes for the solution of a problem in a finite number of steps.ambient temperature: the temperature of the surrounding air that comes in contact with the enclosure of the device.antenna: an aerial which sends out and receives a signal in a specific direction. There are four basic types of antenna in radar level measurement, horn, parabolic, rod, and waveguide.attenuation: a term used to denote a decrease in signal magnitude in transmission from one point to another. Attenuation may be expressed as a scalar ratio of the input magnitude to the output magnitude or in decibels.Auto False-Echo Suppression: a technique used to adjust the level of a TVT to avoid the reading of false echoes. (See TVT.)Auto False-Echo Suppression Distance: defines the endpoint of the TVT distance. (See TVT.) This is used in conjunction with auto false echo suppression.beam width: the angle diametrically subtended by the one-half power limits (-3 dB) of the microwave beam.beam spreading: the divergence of a beam as it travels through a medium. blanking: a blind zone extending away from the reference point plus any additional shield length.The instrument is programmed to ignore this zone.capacitance: the property of a system of conductors and dielectrics that permits the storage of electricity when potential differences exist between the conductors. Its value is expressed as the ratio of a quantity of electricity to a potential difference, and the unit is a Farad. confidence: see Echo Confidence damping: term applied to the performance of an instrument to denote the manner in which the measurement settles to its steady indication after a change in the value of the level.dB (decibel): a unit used to measure the amplitude of signals.
Page 158 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmGlossaryderating: to decrease a rating suitable for normal conditions according to guidelines specified for different conditions. dielectric: a nonconductor of direct electric current.1)dielectric constant (dK): the ability of a dielectric to store electrical potential energy under the influence of an electric field. Also known as Relative Permittivity. An increase in the dielectric constant is directly proportional to an increase in signal amplitude. The value is usually given relative to a vacuum /dry air: the dielectric constant of air is 11.echo: a signal that has been reflected with sufficient magnitude and delay to be perceived in some manner as a signal distinct from that directly transmitted. Echoes are frequently measured in decibels relative to the directly transmitted signal.Echo Confidence: describes the quality of an echo. Higher values represent higher quality. Echo Threshold defines the minimum value required for an echo to be accepted as valid and evaluated.Echo Lock Window: a window centered on an echo in order to locate and display the echo’s position and true reading. Echoes outside the window are not immediately processed.Echo Marker: a marker that points to the processed echo.Echo Processing: the process by which the radar unit determines echoes.Echo Strength: describes the strength of the selected echo in dB referred to 1 µV rms.Echo Profile: a graphical display of a processed echo.false echo: any echo which is not the echo from the desired target. Generally, false echoes are created by vessel obstructions.frequency: the number of periods occurring per unit time. Frequency may be stated in cycles per second.Hertz (Hz): unit of frequency, one cycle per second. 1 Gigahertz (GHz) is equal to 109 Hz.HART: Highway Addressable Remote Transducer. An open communication protocol used to address field instruments. horn antenna: a conical, horn-shaped antenna which focuses microwave signals. The larger the horn diameter, the more focused the radar beam.inductance: the property of an electric circuit by virtue of which a varying current induces an electromotive force in that circuit or in a neighboring circuit. The unit is a Henry.microwaves: the term for the electromagnetic frequencies occupying the portion of the radio frequency spectrum from 1 GHz to 300 GHz.1) Many conductive liquids/electrolytes exhibit dielectric properties; the relative dielec-tric constant of water is 80.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 159mmmmmGlossarymultiple echoes: secondary echoes that appear as double, triple, or quadruple echoes in the distance from the target echo.Near Blanking: see Blankingnozzle: a length of pipe mounted onto a vessel that supports the flange. parameters: in programming, variables that are given constant values for specific purposes or processes.polarization: the property of a radiated electromagnetic wave describing the time-varying direction and amplitude of the electric field vector.polarization error: the error arising from the transmission or reception of an electromagnetic wave having a polarization other than that intended for the system.propagation factor (pf): where the maximum velocity is 1.0, pf is a value that represents a reduction in propagation velocity as a result of the wave travelling through a pipe or medium.pulse radar: a radar type that directly measures distance using short microwave pulses. Distance is determined by the return transit time.radar: radar is an acronym for RAdio Detection And Ranging. A device that radiates electromagnetic waves and utilizes the reflection of such waves from distant objects to determine their existence or position.range: distance between a transmitter and a target.range extension: the distance below the zero percent or empty point in a vessel. relative humidity: the ratio of the actual amount of moisture in the atmosphere to the maximum amount of moisture the atmosphere could hold (which varies depending on the air temperature).relative permittivity: see dielectric constant.repeatability: the closeness of agreement among repeated measurements of the same variable under the same conditions.sensor value: the value produced by the echo processing which represents the distance from sensor reference point to the target. (see Sensor Mode (2.2.2.) on page 79 for an illustration).shot: one transmit pulse or measurement.speed of light: the speed of electromagnetic waves (including microwave and light) in free space. Light speed is a constant 299, 792, 458 meters per second.stillpipe: a pipe that is mounted inside a vessel parallel to the vessel wall, and is open to the vessel at the bottom.
Page 160 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmGlossarystilling-well: see stillpipe.two wire radar: a low-energy radar. Can be loop powered, analog, intrinsically safe 4 to 20 mA, or a digital (BUS) transmitter. TVT (Time Varying Threshold): a time-varying curve that determines the threshold level above which echoes are determined to be valid.waveguide antenna: a hollow, metallic tube that transmits a microwave signal to the product target.
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 161mmmmmIndexIndexAAbbreviations and Identificationslist 3access controlremote access 113activating LR250 31agitator blade detectionavoiding 92AMS Device Managerfeatures 60analog outputexplanation 132fail signal 8select 55signal range 8simulate via PDM 56analog output scalesetup 84approvals 10Auto False Echo Suppression 130explanation 130setup 94setup via PDM 52Bbeam anglevalues 13, 15blanking (see Near Range) 131bypass pipeinstallation 22Ccablesrequirements 24Calibration Interval 108cleaninginstructions 125CLEF (Constrained Leading Edge Fit)explanation 128CLEF rangesetup 92communicationload 8max. line length 8conduitsrequirements 24configurationnew device via AMS 61new device via PDM 41Quick Start via LUI 36configuration flag reset 56DDampingexplanation 132Damping Filtersetup 80data loggingtime-based echo profile storage 50Device Address 113setting via LUI 39device descriptionHART 146Device Reset 99device resetsee Master Reset 99device statusview via PDM 58Diagnostics 98dimensionsflanges 16, 18horn 12, 13, 15threaded horn 12threaded horn with extension 12Eecho confidenceparameter setup 93echo processingProcess Intelligence 126process intelligence 126echo profiledata logging 50view via LUI 38view via PDM 58Echo Profile Utilities 49echo selectionAlgorithm 127CLEF (Constrained Leading Edge Fit)128Position algorithm 127time varying threshold (TVT) 127Echo setupquick access 54EDDelectronic device description 41edit mode
Page 162 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmIndexhandheld programmer 34key functions 35electronic device description (EDD) 41enclosureopening 24Ffactory defaultsMaster Reset 99Fail-safesettings 83Fail-safe Modeexplanation 134Fail-safe Timerexplanation 134false echosee Auto False Echo Suppression 130Far Rangeexplanation 131setup 90flange markings 16, 18flange sizeschart 16, 18function keysmeasurement mode 32navigation mode 34Hhandheld programmeredit mode 34measurement mode 32navigation 34HARTdevice description 146multidrop mode 149HART communicationset preambles 56HART Communicationsdetails 146HART version 8hazardous area installationswiring requirements 25IIdentifications and Abbreviationslist 3Index 161installationhazardous area requirements 25internal temperaturemonitoring 135Kkey functionsedit mode 35LLanguage 114LCD displaycontrast adjustment 112echo profile viewing 38fast mode 111measurement mode 31level application examplevia LUI 38lid-lock set screw 24linearizationvia PDM 45linearization via AMS 64Local User Interface (LUI) 31LOEFail-safe Mode 134loop testsimulate analog output 56loop voltage vs. loop resistancepower supply requirements 26Loss of Echo (LOE)explanation 134LUI (Local User Interface) 31MmA outputselect analog output 55maintenancecalibration schedules via PDM 54cleaning 125service schedules via PDM 54maintenance settings 98see Calibration Interval 108see Remaining Sensor Lifetime 104see Service Interval 105Master Resetfactory defaults 99factory defaults via AMS 62measurement rangeblanking via Near Range 131extension via Far Range 131Measurement Responseexplanation 131mountingbypass requirements 22handheld programmer access 22housing construction 22nozzle design 21nozzle location 21on vessel with obstructions 22
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 163mmmmmIndexstillpipe requirements 22sunshield recommended 22multidrop mode 149NNear Rangeexplanation 131setup 90Ooperating principles 126Ppassword protectionvia AMS 72via PDM 58performancespecifications 7PIN to unlocklocal access 114pipe sizesflange mounting 16, 18polarization reference point 22power 7power sourcerequirements 24power supply requirementsloop voltage vs. loop resistance 26principles of operation 126Process Intelligence 126process temperaturemaximum 135programmerhandheld 32programmingadjust parameters via PDM 48via the handheld programmer 33propagation factorvalues 91QQuick Start Wizardvia LUI 36via SIMATIC PDM 41Rreading erratictroubleshooting 123reading incorrecttroubleshooting 123resetsee Master Reset 99Response Rateexplanation 131settings 81SScan Devicesynchronize parameters via AMS 62securitylocal access 114local access control via AMS 70local access unlock value 114password protection via AMS 72password protection via PDM 58remote access control 113remote access control via AMS 70self-testdevice self-test via PDM 55sensor reference pointflanged horn 14threaded horn 12settingsadjust parameters via LUI 33, 34adjust parameters via PDM 48sidepipesee bypass pipe 22SIMATIC PDMfunctions and features 40Rev. 5.2, SP1 features 41Rev. 6.0, SP3 features 40simulate analog outputloop test 56specifications 7ambient temperature 9antenna 8enclosure 8environmental 9performance 7power 7pressure 10process connections 8process temperature 10weight 8startuptransition screen 31stillpipeinstallation 22stillpipe applicationconfiguring via PDM 47synchronize parametersscan device via AMS 62Ttechnical supportcontact information 3temperature de-Rating
Page 164 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmIndexcurves 136testloop test 56threaded connection markings 17, 18trendview trend line 57troubleshootingcommunication 117operation 122TVT (time varying threshold)explanation 127TVT Shapermanual adjustment via PDM 51Uunlock valuelocal access 114uploads/downloadsaccelerated 87, 96Vvessel shapeselection 86Wwearview via PDM 58wiringcables 24connecting HART 25hazardous areas 25write protectlocal access 114
SITRANS LR 250 (HART) – INSTRUCTION MANUAL Page 165 SITRANS LR 250 (HART) – INSTRUCTION MANUAL 7ML19985JE02Appendix C: menu chartLCD menu structure
Page 166 SITRANS LR 250 (HART) – INSTRUCTION MANUAL SITRANS LR 250 (HART) – INSTRUCTION MANUAL 7ML19985JE02Appendix C: menu chartLCD menu structure LEVEL METER1. QUICK START1.1 LANGUAGE1.2 MATERIAL1.3 RESPONSE RATE1.4 UNITS1.5 OPERAT. MODE1.6 LOW CALIB. PT.1.7 HIGH CALIB. PT.1.8 APPLY? 2. SETUP2.1 DEVICE2.1.1 HARDWARE REV2.1.2 FIRMWARE REV2.1.3 LOADER REV2.1.4 ORDER OPTION2.2 SENSOR2.2.1 UNITS2.2.2 SENSOR MODE2.2.3 MATERIAL2.2.4 DAMPING FILTER2.3 CALIBRATION2.3.1 LOW CALIB. PT.2.3.2 HIGH CALIB. PT.2.3.3 SENSOR OFFSET2.4 RATE2.4.1 RESPONSE RATE2.4.2 FILL RATE /MIN2.4.3 EMPTY RATE /MIN2.5 FAIL-SAFE2.5.1 MAT. LEV.2.5.2 TIMER2.5.3 LEVEL 2.6 ANALOG OUT. SCAL.2.6.1 CURR. OUT. FUNC.2.6.2 4 MA SETPOINT2.6.3 20 MA SETPOINT2.6.4 MIN. MA LIMIT2.6.5 MAX. MA LIMIT2.6.6 MA OUTPUT VALUE2.7 LINEARIZATION2.7.1 VOLUME2.7.1.1 VESSEL SHAPE2.7.1.2 MAX. VOLUME2.7.1.3 DIMENS. A2.7.1.4 DIMENS. L2.7.2 TABLE 1 – 82.7.3 TABLE 9 – 162.7.4 TABLE 17 – 242.7.5 TABLE 25 – 322.8 SIGNAL PROC.2.8.1 NEAR RANGE2.8.2 FAR RANGE2.8.3 PROPAG. FACTOR2.8.4 ECHO SELECT2.8.4.1 ALGORITHM2.8.4.2 POS. DETECT2.8.4.3 ECHO THRESHOLD2.8.4.4 CLEF RANGE2.8.5 SAMPLING2.8.5.1 ECHO LOCK2.8.5.2 UP SAMP.2.8.5.3 DOWN SAMP.2.8.6 ECHO QUALITY2.8.6.1 CONFIDENCE2.8.6.2 ECHO STRENGTH2.8.6.3 NOISE AVERAGE2.8.7 TVT SETUP2.8.7.1 AUTO ECHO SUPP2.8.7.2 AUTO SUPP RANGE2.8.7.3 HOVER LEVEL2.8.7.4 SHAPER MODE2.8.8 TVT SHAPER2.8.8.1 BRKPT. 1-92.8.8.2 BRKPT. 10-182.8.8.3 BRKPT. 19-272.8.8.4 BRKPT. 28-362.8.8.5 BRKPT. 37-402.8.9 MEAS. VALUES2.8.9.1 LEVEL MEAS.2.8.9.2 SPACE MEAS.2.8.9.3 DISTANCE MEAS.2.8.9.4 VOLUME MEAS.3. DIAGNOSTICS3.1 ECHO PROFILE3.2 ELECT. TEMP.3.2.1 CURR. INTERN. TEM..3.2.2 HIGHEST VALUE.3.2.3 LOWEST VALUE.4. SERVICE4.1 MASTER RESET4.2 REMAIN. DEV. LIFE4.2.1 LIFETIME EXPECTE..4.2.2 TIME IN OPER..4.2.3 REMAIN. LIFETIM..4.2.4 REMINDER ACTIV.4.2.5 REMIND. 1 (REQ) 4.2.6 REMIND. 2 (DEM)Notes: • In Navigation mode ARROW keys navigate the menu in the direction of the arrow.. • See Parameter Reference on page 78 for detailed information and instructions.2. SETUP (cont’d)
7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 167mmmmmLCD menus4.2.7 MAINT STAT4.2.8 ACK STATUS4.2.9 ACK4.3 REMAIN. SENS. LIFE4.3.1 LIFETIME EXPECTE..4.3.2 TIME IN OPER..4.3.3 REMAIN. LIFETIME4.3.4 REMINDER ACTIV.4.3.5 REMIND. 1 (REQ) 4.3.6 REMIND. 2 (DEM)4.3.7 MAINT STAT4.3.8 ACK STATUS4.3.9 ACK4.4 SERVICE SCHED.4.4.1 SERV. INTERVAL4.4.2 TIME LAST SERV.4.4.3 TIME NEXT SERV.4.4.4 REMINDER ACTIV.4.4.5 REMIND. 1 (REQ)4.4.6 REMIND. 2 (DEM)4.4.7 MAINT STAT4.4.8 ACK STATUS4.4.9 ACK4.5 CALIB. SCHED.4.5.1 CALIB. INTERVAL4.5.2 TIME LAST CALIB.4.5.3 TIME NEXT CALIB.4.5.4 REMINDER ACTIV.4.5.5 REMIND. 1 (REQ)4.5.6 REMIND. 2 (DEM)4.5.7 MAINT STAT4.5.8 ACK STATUS4.5.9 ACK4.6 MANUF. DATE4.7 POWERED HOURS4.8 POWERON RESETS4.9 LCD FAST MODE4.10 LCD CONTRAST4.11 MEM. TEST5. COMMUNICATION5.1 DEVICE ADDRESS6. SECURITY6.1 REMOTE ACCESS6.1.1 ACCESS CONTROL6.2 LOCAL ACCESS6.2.1 WRITE PROTECT6.2.2 PIN TO UNLOCK7. LANGUAGE4. SERVICE (cont’d)
Page 168 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03mmmmmLCD menusNotes
*7ml19985JE03* Rev. 3.0www.siemens.com/processautomationSiemens Milltronics Process Instruments Inc.1954Technology Drive, P.O. Box 4225Peterborough, ON, Canada K9J 7B1Tel: (705) 745-2431 Fax: (705) 741-0466Email: techpubs.smpi@siemens.comSiemens Milltronics Process Instruments Inc. 2009Subject to change without prior noticePrinted in Canada

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