Siemens Canada Siemens Milltronics Process Instruments LR250 SITRANS LR 250 TANK LEVEL PROBING RADAR User Manual JE01 LR250 LUI

Siemens Canada Ltd. - Siemens Milltronics Process Instruments SITRANS LR 250 TANK LEVEL PROBING RADAR JE01 LR250 LUI

USERS MANUAL

immmmmTable of ContentsTable of ContentsTable of Contents ...............................................................................................................iSafety Notes ...........................................................................................................................................1Safety marking symbols ............................................................................................................1The Manual ............................................................................................................................................1FCC Conformity ......................................................................................................................................2Application Examples .................................................................................................................2Support ....................................................................................................................................................2Abbreviations and Identifications ...........................................................................................2SITRANS LR250 ..................................................................................................................4Applications ..................................................................................................................................5SITRANS LR250 System Implementation ..............................................................................6Programming ................................................................................................................................6SITRANS LR250 Approvals and Certificates .........................................................................6Specifications ....................................................................................................................7SITRANS LR250 ..................................................................................................................................... 7Power............................................................................................................................................. 7Performance................................................................................................................................. 7Interface ........................................................................................................................................ 8Mechanical................................................................................................................................... 8Environmental .............................................................................................................................. 9Process.......................................................................................................................................... 9Approvals (verify against device nameplate)..................................................................... 10Programmer (infrared keypad) .............................................................................................. 10Installation ........................................................................................................................11Mounting location ...............................................................................................................................12Location on a nozzle .................................................................................................................14Polarization reference point ...................................................................................................14Mounting Instructions .......................................................................................................................15Mounting: Threaded Version .................................................................................................15Horn Location on Nozzles ....................................................................................................... 16Mounting: Stillpipe or Bypass (Sidepipe) ............................................................................16Pipe requirements..................................................................................................................... 16Mounting: Horn with Extension .............................................................................................18SITRANS LR250 Dimensions ..................................................................................................19Threaded Horn Antenna.......................................................................................................... 19Dimensions: Horn with extensions ....................................................................................... 20Dimensions: Flanged Horn...................................................................................................... 21Dimensions: Flanges ..........................................................................................................................22Wiring ................................................................................................................................24Power .....................................................................................................................................................24Connecting SITRANS LR250 .............................................................................................................24Wiring setups for hazardous area installations ..........................................................................25Intrinsically Safe wiring........................................................................................................... 25Non-incendive wiring (only for USA/Canada) ....................................................................28Wiring drawing (Intrinsically Safe: FM/CSA) ...............................................................................29
iimmmmmTable of ContentsWiring drawing (Non-incendive: FM/CSA) ...................................................................................30Instructions specific to hazardous area installations ................................................................31Quick Start ........................................................................................................................33Activating SITRANS LR250 ...............................................................................................................33Measurement mode (RUN mode) ........................................................................................ 33Programming SITRANS LR250 .........................................................................................................34The handheld programmer and PROGRAM mode display .............................................34Quick Start Wizard via the handheld programmer ...........................................................35Level application example ................................................................................................................37Auto False Echo Suppression ................................................................................................37Quick Start Wizard via SIMATIC PDM .................................................................................38Device Description (DD).......................................................................................................... 38Quick Start Wizard steps......................................................................................................... 39Using Linearization via the Quick Start wizard ..................................................................42Local Operation Interface ..............................................................................................46The LCD Display ..................................................................................................................................46Key functions in Measurement mode ..................................................................................47PROGRAM mode display......................................................................................................... 48Navigation view......................................................................................................................... 48Programming via the handheld programmer ...............................................................................49Echo Profile Viewing ................................................................................................................51Operating SITRANS LR250 via SIMATIC PDM ...........................................................52Functions in SIMATIC PDM ..............................................................................................................52SIMATIC PDM Rev. 6.0, SP2 Features .................................................................................52Accessing Functions ................................................................................................................52Online Display ............................................................................................................................ 53Changing parameter settings using SIMATIC PDM .........................................................53Configuring a new device .......................................................................................................54Calibrating LR 460 via PDM ....................................................................................................54Reset ............................................................................................................................................ 55Configuration Flag Reset (HART only).................................................................................. 55Auto False Echo Suppression ................................................................................................ 55Echo profile saving.................................................................................................................... 57Trend Diagram (Level Trend over Time).............................................................................. 57Application Examples ....................................................................................................58Example 1: Liquid resin in storage vessel, level measurement .....................................58Example 2: Horizontal vessel with volume measurement ...............................................59Parameter Reference .....................................................................................................61Pull-down menus via SIMATIC PDM ...................................................................................61Quick Start Wizard ..............................................................................................................................61Appendix A: Alphabetical Parameter List ..................................................................93Appendix B: Programming Chart ..................................................................................95Appendix C: Troubleshooting ........................................................................................97Communication Troubleshooting ....................................................................................................97Generally: ....................................................................................................................................97Specifically: .................................................................................................................................97General Fault Codes ...........................................................................................................................98
iiimmmmmTable of ContentsFault Codes ...........................................................................................................................................98Operation Troubleshooting .............................................................................................................101Appendix D: Maintenance ...........................................................................................104Unit Repair and Excluded Liability ................................................................................................104Appendix E: Technical Reference ..............................................................................105Principles of Operation ....................................................................................................................105Echo Processing ...............................................................................................................................105Measurement Response .......................................................................................................106Typical Receiver Signal ........................................................................................................ 106Echo Lock ............................................................................................................................................107Loss of Echo (LOE) ..................................................................................................................107Fail-safe Mode ...................................................................................................................................107Fail-safe Timers .......................................................................................................................107Fail-safe value ..........................................................................................................................107Far Range (Range Extension) .........................................................................................................108False-Echo Suppression .................................................................................................................108Near Range (Blanking) ..........................................................................................................108Auto False-Echo Suppression ..............................................................................................108mA Output ...........................................................................................................................................110Maximum Process Temperature Chart .....................................................................111Process Pressure/Temperature derating curves ................................................................112Horn Antenna or Wave Guide – ANSI Hole Pattern, 150# ............................................113Horn Antenna or Wave Guide DN Hole Pattern, PN16 ..................................................113Appendix F: Loop power ..............................................................................................114Typical Connection Drawing ................................................................................................114Allowable operating area of SITRANS LR250 ..................................................................114Curve 1 (General Purpose, Intrinsically Safe, Non-incendive) ....................................114Curve 2 (Flameproof, Increased Safety, Explosion-proof) ............................................115Startup Curve ...........................................................................................................................115Appendix G: Special Applications .............................................................................116Application Example: Stillpipe ..............................................................................................116Appendix H: HART Communications ........................................................................117SIMATIC PDM ...................................................................................................................................117HART Device Description (DD) ......................................................................................................117HART Communicator 375 ......................................................................................................118Supported HART Commands: ........................................................................................................121Universal and Common Practice Commands ..................................................................121Device Specific Commands ..................................................................................................121Appendix L: Software Revision History ....................................................................122Glossary ..........................................................................................................................123Index ................................................................................................................................127LCD menu structure ......................................................................................................130
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7ML19985JE01 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.1Safety marking symbolsThe 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..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.Notes:• 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.
Page 2 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmSITRANS LR250FCC ConformityUS Installations only: Federal Communications Commission (FCC) rules Application ExamplesThe application examples used in this manual illustrate typical installations using SITRANS LR250. 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.Standard applications are found in the main body of the manual: for more specialized applications, please see Appendix G: Special Applications, page 116. SupportIf you have questions you can access our 24-hour hotline at:www.siemens.com/automation/support-request Phone: +49 180 50 50 222.Abbreviations and IdentificationsWARNING: 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.Short form Long Form Description UnitsA/D Analog to digitalCE / FM / CSAConformitè Europèene / Factory Mutual / Canadian Standards Associationsafety approval
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 3mmmmmSITRANS LR250CiInternal capacitanceD/A Digital to analogDAC Digital Analog ConverterDCS Distributed Control System control room apparatusFV Full VacuumESD Electrostatic DischargeHART Highway Addressable Remote TransducerIiInput current mAIoOutput current mAIS Intrinsically Safe safety approvalLiInternal inductance mHLRV Lower Range Value value for process empty level 4 mA1LSL Lower Sensor Limit below which no PV is anticipatedmH milliHenry 10-3 HenryµF microFarad 10-6 Faradµsmicrosecond 10-6 SecondPED Pressure Equipment Directive safety approvalpF pico Farads 10-12 Faradppm parts per millionPV Primary Variable measured valueSV Secondary Variable equivalent valueTVT Time Varying Threshold sensitivity thresholdUiInput voltage VUoOutput voltage VURV Upper Range Value value for process full level 20 mA1USL Upper Sensor Limit above which no PV is anticipated1. 100% is most commonly set to 20 mA, and 0% to 4 mA: however, the settings can be reversed.Short form Long Form Description Units
Page 4 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmSITRANS LR250SITRANS LR250SITRANS LR250 is a 2-wire loop-powered, continuous level measuring instrument that utilizes advanced pulse radar technology at 25 GHz. The instrument consists of an electronic component coupled to the antenna and process connection. It is very easy to install and set up, using either the infrared hand-held programmer locally, or using SIMATIC PDM from a remote location.Communication is via HART1. Signals are processed using Process Intelligence which has been field-proven in over 500,000 applications worldwide (ultrasonic and radar).SITRANS LR250 is available in numerous versions, several of which are approved for use in hazardous areas. The approval rating is shown on the device nameplate.Process Connections The device is available with threaded or flange type process connections with a horn antenna.1. HART® is a registered trademark of the HART Communication Foundation.Application TypeLR250 Version Approval Rating Valid for: Wiring Non-hazardousGeneral PurposeCSAUS/C, FM, CE US/Canada, EuropeSee page 29HazardousIntrinsically Safe (barrier required)ATEX II 1 G, EEx ia IIC T4ATEX 1D, EEx tD A20 IP67 T90 °C EuropeSee page 29IECEx SIR 05.0031XEx ia IIC T4EX tD A20 IP67 T90 °CInternationalFM/CSA: Class I, Div. 1, Groups A, B, C, D Class II, Div. 1, Groups E, F, GClass III T4US/Canada See page 29Non-incendiveFM/CSA: Class I, Div. 2, Groups A, B, C, D T5US/Canada See page 30
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 5mmmmmSITRANS LR250ApplicationsSITRANS LR250 is designed to measure liquid levels in a variety of applications:• liquid bulk storage vessels• simple process vessels with gentle agitation• liquids• slurriesNotes:• Please refer to device nameplate for approval information.• SITRANS LR250 is to be used only in the manner outlined in this manual, otherwise protection provided by the equipment may be impaired.shield length: 100 mm (4"): use for nozzles of 100 mm (4") or less in lengthshield length 250 mm (10"): use for long nozzles of 250 mm (10") or less in lengthGRAPHIC TO BE UPDATED
Page 6 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmSITRANS LR250SITRANS LR250 System ImplementationSITRANS LR2501supports HART2communication protocol, and SIMATIC PDM software.ProgrammingSITRANS LR250 carries out its level measurement function according to the set of built-in parameters. You can make parameter changes via the hand programmer, via a PC using SIMATIC PDM, or via a HART Handheld Communicator.SITRANS LR250 Approvals and Certificates1. Depending on the system design, the power supply may be separate from the PLC, or integral to it.2. A 250 Ohm resistor may be required if the loop resistance is less than 250 Ohms.Note: Please see Approvals (verify against device nameplate) on page 10 for an approvals listing.active PLCHART modemSITRANS LR250power supply1Typical PLC/mA configuration with HARTR2= 250 ΩHART communicatorGRAPHIC TO BE UPDATED
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 7mmmmmSpecificationsSpecificationsSITRANS LR250Power• Maximum 30 V DC• 4 to 20 mAPerformanceReference 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)• non-linearity (accuracy) the greater of: 10 mm (0.4"), or 0.10% of High Calibration point value (including hysteresis and non-repeatability)• non-repeatability 5 mm (included in non-linearity specification)• deadband (resolution) 5 mm (included in non-linearity specification)Analog Output Accuracy (measured in accordance with IEC 60770-1)• non-linearity (accuracy) 0.125% of Span (including hysteresis and non-repeatability)• non-repeatability 0.025% of Span (included in non-linearity specification)• deadband (resolution) 0.0375% of Span (included in non-linearity specification)Note: Siemens Milltronics makes every attempt to ensure the accuracy of these specifications but reserves the right to change them at any time. Nominal 24 V DC at max. 550 Ohm: For other configurations, see the chart in Appendix J: Loop power on page 130
Page 8 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmSpecificationsFrequency 25.0 GHzMeasurement range10.3 to 20 m (1 to 65 ft)Update time at 4 mA 1 secondUpdate time digital ≤ 1.5 secondsBlanking distance242 mm (1.65") from end of hornInfluence of ambient temperature < 0.006% / K (average over full temperature range, referenced to maximum range)Dielectric constant• 1.5" and 2" horns εr >3• 3" and 4" horns εr > 2Memory:• non-volatile EEPROM• no battery required.Interface• HART standard, integral to analog output• configuration Siemens SIMATIC PDM (PC), or HART handheld communicator, or Siemens Milltronics infrared hand-held programmer• analog output 4 to 20 mA ± 0.02 mA accuracy (for detail, see non-linearity under Analog Output Accuracy on page 7)• display (local)3dot matrix with bar graph (representing level)MechanicalProcess Connections: • threaded connection 1.5” or 2" NPT, BSP, or G [BS EN ISO 228-1] • flange connection 2", 3", 4" (ANSI 150, 300#), 50, 80, 100 mm (PN16, 40, JIS 10K)• materials 316 L stainless steel, optional Hastelloy C22Antenna:• horn standard 1.5" (40mm) , 2" (48 mm), 3" (75 mm), and 4" (95 mm) horn, optional 100 mm (4") horn extension• materials 316L stainless steel with PTFE emitteroptional Hastelloy C22 with PTFE emitter1. Minimum range is horn length + 50 mm. For the reference point for each configuration, see SITRANS LR250 Dimensions on page 192. See Near Range (Blanking) on page 108 for more details.3. Display quality will be degraded in temperatures below –25 °C (–13 °F) and above +65 °C (+149 °F).
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 9mmmmmSpecificationsEnclosure • 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• standard model < 3 kg (6.6 lb) 37.5 mm (1.5") threaded connection with horn antennaEnvironmental• 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 below)• installation category I• pollution degree 4Process•temperature1−40 to 150 °C (−40 to 302 °F) (at process connection)• pressure (vessel)1Refer to Process Pressure/Temperature derating curves on page 107 onwards.Notes: • Please check the ambient and operating temperatures under Enclosure on page 9, and Approvals (verify against device nameplate) on page 10; also check Approvals (verify against device nameplate) on page 10, for the specific configuration you are about to use or install.• Use appropriate conduit seals to maintain IP or NEMA rating.1. 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 111, and Process Pressure/Temperature derating curves beginning on page 112.
Page 10 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmSpecificationsApprovals (verify against device nameplate)•General CSAUS/C, FM, CE• Radio Europe (R&TTE), FCC, Industry Canada• Hazardous Intrinsically Safe (Europe) ATEX II 1G, EEx ia IIC 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)1 Class I, Div. 1, Groups A, B, C, D Class II, Div. 1, Groups E, F, G Class III T4 Non-incendive (US/Canada) FM/CSA2 Class I, Div. 2, Groups A, B, C, D T5Programmer (infrared keypad)Siemens Milltronics Infrared IS (Intrinsically Safe) Hand Programmer for hazardous and all other locations (battery is non-replaceable) • 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 7ML5830-2AJ 1. See Wiring drawing (Intrinsically Safe: FM/CSA) on page 29 for drawing number 23650653.2. See Wiring drawing (Non-incendive: FM/CSA) on page 30 for drawing number 23650673.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 11mmmmmInstallationInstallation1WARNINGS: • 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.• 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.
Page 12 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmInstallationMounting locationRecommendations:• Maintain ambient temperature within –40 to +80 °C (–40 to +176 °F).• 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.• Use a sunshield if the instrument will be exposed to direct sunlight (even though the LCD has UV protection).Precautions:• Avoid interference to the emission cone from obstructions or from the fill path.• Avoid central locations on vessels.WARNING: For vessels with conical or parabolic tops, avoid mounting the instrument at the centre. (The concavity of the top can focus echoes into the centre, giving false readings.)Note: Under certain circumstances, it may be acceptable to mount SITRANS LR250 at the centre of a flat-topped tank: please discuss this with your Siemens Milltronics representative.process temperature –40 to +150 °C (–40 to +302 °F)ambient temperature (surrounding enclosure volume)–40 °C to 80 °C (–40 °F to 176 °F)hand programmernameplateprocess device tagcustomer-supplied flangeConiFl at Flat Parabolic Conicalpreferred undesirableGRAPHIC TO BE UPDATED
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 13mmmmmInstallationKeep the emission cone free of interference:• Make allowance for the emission cone spreading (see table showing beam width on page 21).• Locate the antenna away from the side wall, to avoid interference from indirect echoes.• Avoid interference from objects such as ladders or pipes, which can cause false echoes.• Make sure the emission cone does not intersect the fill path: allowance for beam widthbeam widthNotes: • beam width (defined at –3dB boundary) depends on horn size: see table showing beam width on page 21 • For more detail on false echoes, see Appendix F: Technical Reference on page 102.GRAPHIC TO BE UPDATED
Page 14 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmInstallationLocation on a nozzleOn a nozzle, the horn should protrude a minimum or 100 mm (4") to avoid interference.A manhole cover is typically a covered nozzle with a diameter 610 mm (24”) or greater. To provide optimum signal conditions on a manhole cover, locate the horn off-center, typically 100 mm (4") from the side.Polarization reference pointFor best results on a tank with obstructions, or a stillpipe with openings, orient the front or back of the device toward the obstructions (see Mounting: Stillpipe or Bypass (Sidepipe) on page 117 for an illustration.) Note: For details on other applications, see Appendix G: Special Applications on page 109.10 mm (0.4")retaining collarthreaded connectionshieldGRAPHIC TO BE UPDATEDGRAPHIC TO BE UPDATEDpolarization reference pointdisplay
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 15mmmmmInstallationMounting InstructionsMounting: Threaded Version1. Before inserting SITRANS LR250 into its mounting connection, check to ensure the threads are matching, to avoid damaging them. 2. Simply screw SITRANS LR250 into the process connection, and hand tighten, or use a wrench. For pressure applications, it will be necessary to use PTFE tape (or other appropriate thread sealing compound) and tighten the process connection beyond hand tight. You can use 1.5” or 2” threaded process connections. There are three thread types: NPT, BSP, and G.A torque of 40 N-m (30 ft.lbs) is recommended3. If you want to rotate the enclosure, use a 2 mm Allen key to loosen the set-screws that secure the locking ring. 4. Once the enclosure is in a suitable position, tighten the set-screws. .Notes: • The device can be rotated past 360° without damage. When mounting, rotate the head so the polarization dot faces the closest wall. In stilling well applications, line up the polarization dot with the vent hole.• Do not rotate the enclosure after programming and vessel calibration, otherwise an error may occur, caused by a polarity shift of the transmit pulse.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.min. I.D. 100 mm (4") Max. nozzle height 100 mm (4") 316 S.S.PTFEGRAPHIC TO BE UPDATED
Page 16 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmInstallationHorn Location on NozzlesMounting: Stillpipe or Bypass (Sidepipe)This mounting arrangement is an alternative to the waveguide antenna option. It is used for products with an εr less than 3 or for extremely turbulent or vortex conditions. It can also be used to provide optimum signal conditions on foaming materials.Pipe requirementsDiameterSuitable pipe diameters are 50 mm (2”) to 100 mm (4”). SmoothnessOne continuous length of metallic pipe is preferred, without joints. If joints are unavoidable, you must machine them to close tolerances (± 0.25 mm [± 0.010”]) and weld a connecting sleeve on the outside.10 mm (0.4")GRAPHIC TO BE UPDATEDThe end of the horn should protrude aminimum of 10 mm (0.4”) to avoid inter-ference with the nozzleoptimum diameter80 mm (3”) align display window with ventsalign display window with stillpipe slotsMounting on a bypassMounting on a stillpipeGRAPHIC TO BE UPDATED
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 17mmmmmInstallationSeePropagation Factor on page 66 for the related propagation factor. Ensure there is a vent at the upper end of the side pipe to equalize pressure and keep the liquid-level in the pipe constant with the liquid-level in the vessel.Mounting: Horn with ExtensionUse this combination if the nozzle is long and the diameter is small.A 100 mm (4") horn extension is available.GRAPHIC TO BE UPDATED
Page 18 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmInstallationSITRANS LR250 DimensionsThreaded Horn Antenna1Notes: • Process temperature and pressure capabilities are dependent upon information on the process device tag. Reference drawing listed on the tag is available on our website. Go to the product page for SITRANS LR250 at: xxxxxxx.• Signal amplitude increases with horn diameter, so use the largest practical size.• Optional waveguide extensions and/or purging1 system can be installed between the flange and the antenna.1. An optional purging system provides an inlet on the flange where cooling air or cleaning fluid may be supplied. The air or liquid passes through the flange and exits the inside of the horn to clean the antenna system.ref. pointthreaded coverenclosure/electronics????shield length (internal)standard: 100 mm (4")optional: 250 mm (10")std. 296 mm (11.7") min.option 446 mm (17.6") max.158 mm (6.2")154 mm (6.1") 185 mm (7.3")mounting thread1/2" NPT cable entry (or alternatively, M20 cable gland)process device tagretaining collar109 mm (4.3")121 mm (4.8")50 mm (2.0")std. 575 mm (22.6") min.option 725 mm (28.5") max.23 mm (0.9")GRAPHIC TO BE UPDATED
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 19mmmmmInstallationDimensions: Horn with extensions
Page 20 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmInstallationDimensions: Flanged HornNominal Horn Size Horn O.D. Horn Height beam width11. – 3dB in E-plane.37.5 mm (1.5") 40.0 mm (1.57”) 100 mm (3.93") 19 degrees50 mm (2”) 47.8 mm (1.88”) 96 mm (3.78”) 15 degrees80 mm (3”) 74.8 mm (2.94”) 164 mm (6.46”) 10 degrees100 mm (4”) 94.8 mm (3.73”) 214 mm (8.43”) 8 degreesNotes: • Process temperature and pressure capabilities are dependent upon information on the process device tag. Reference drawing listed on the tag is available on our website at www.siemens.com/processautomation, on the product page for SITRANS LR250, under Process Connection Specifications.• Signal amplitude increases with horn diameter, so use the largest practical size.• Optional extensions can be installed between the flange and the antenna.Ø 80 mm (3")enclosure/electronicsname-plateflangehornreference pointretaining collarprocess device tag187 mm (7.4")GRAPHIC TO BE UPDATED7 mm (0.27")horn heighthorn O.D.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 21mmmmmInstallationDimensions: FlangesSee chart on page 23 for further details on flange sizes.process side20 mm (0.8”), nominalenclosure mounting holes (threaded)bolt hole Øbolt hole circle Øflange O.D.horn/waveguide mounting holes (threaded)GRAPHIC TO BE UPDATED
Page 22 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmInstallationPipe size Flange Size Flange O.D. Bolt Hole Circle Ø Bolt Hole Ø Number of Bolts2” ANSI 150# 6.0” 4.75” 0.7” 43” ANSI 150# 7.5” 6.0” 0.75” 44” ANSI 150# 9.0” 7.50” 0.75” 82” ANSI 300#** 6.50” 5.00” 0.75” 43” ANSI 300# 8.25” 6.62” 0.88” 84” ANSI 300# 10.00” 7.88” 0.88” 850 mm DIN PN 16 165 mm 125 mm 18 mm 480 mm DIN PN 16 200 mm 160 mm 18 mm 8100 mm DIN PN 16 220 mm 180 mm 18 mm 850 mm DIN PN 40 165 mm 125 mm 18 mm 480 mm DIN PN 40 200 mm 160 mm 18 mm 8100 mm DIN PN 40 235 mm 190 mm 22 mm 850 mm JIS 10K 155 mm 120 mm 19 mm 480 mm JIS 10K 185 mm 150 mm 19 mm 8100 mm JIS 10K 210 mm 175 mm 19 mm 8
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 23mmmmmInstallation
Page 24 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmWiringWiringPower Connecting SITRANS LR2501WARNINGS: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.•Read Instructions specific to hazardous area installations on page 31.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. Depending on the approval rating, glands and plugs may be supplied with your instrument.Use a 2 mm Allen key to loosen the lid-lock set screw.Unscrew the cover for access to the terminals. Use a screwdriver for added leverage, if necessary.cable gland1 (or NPT cable entry)If you want to rotate the enclosure, use the 2 mm Allen key to loosen the locking ring.locking ringthreaded connectionplug1
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 25mmmmmWiring1. Strip the cable jacket for approximately 70 mm (2.75") from the end of the cable, and thread the wires through the gland1.2. 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.Wiring setups for hazardous area installationsThere are five wiring options for hazardous area installations. In all cases, check the nameplate on your instrument, and confirm the approval rating.1. Intrinsically Safe wiring1. If cable is routed through conduit, use only approved suitable-size hubs for waterproof applications.Approval Rating Valid for: ATEX II 1 G, EEx ia IIC T4ATEX II 1 D, EEx tD A20 IP67 T90 °C EuropeIECEx SIR 05.0031X, Ex ia IIC T4, Ex tD A20 IP67 T90 °C InternationalFM/CSA: Class I, Div. 1, Groups A, B, C, D Class II, Div. 1, Groups E, F, GClass IIIUS/Canadacable shield(if used)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 250HARTRFCC ID: NJA - LR 250Pmax = 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 / S1034567WARNING: Possible Static Hazard, Do Not Rub Or Clean On Site.Ii = 120 mAUi = 30VLi = 0.1mHPi = 0.8WCi = 15nFHARTII 1 D IP68 TxxII 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 / S1034567
Page 26 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmWiring• For power demands see Curve 1 (General Purpose, Intrinsically Safe, Non-incendive) on page 111. • For wiring requirements: Europe/International: Follow local regulations.US/Canada: Download Wiring drawing (Intrinsically Safe: FM/CSA) drawing number 23650563 from the product page of our website at: ##### or see page 29.• Approved dust-tight and water-tight conduit seals are required for outdoor NEMA 4X / type 4X / NEMA 6, IP67, IP68 locations.• Recommended intrinsically safe barriers are listed on page 26.• Refer to Instructions specific to hazardous area installations on page 31.PLC Input ModulesNote: 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.Notes: • The following list is not exhaustive: there are many IS power supplies and barriers on the market which will work with the LR 250. • The PLC input modules and barriers listed below have all been tested and are functionally compatible with the LR 250. Manufacturer Part NumberSiemens SM331 PCS7 HART Input ModuleStahl Type 9461 Analog Input 2-Wire HART Module (for IS1)Siemens 4 x Analog Input I 2-Wire HART Module (for ET200iSP)Bartec Profibus Interface - 8 x 4...20mA Input ModuleABB AI930N 4 x Analog Input HART Module (for S900)Siemens SM331 2 x Analog Input HART Module (for ET200M)Siemens SM331 4 x Analog Input Module (for ET200M)
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 27mmmmmWiringPassive Shunt Diode Barriers How to select a passive barrier for SITRANS LR 2501. Make sure that the barrier safety description is suitable for the LR 250 Intrinsically Safe (IS) input parameters.2. Determine the maximum end-to-end resistance of the barrier (Re-e) from the data sheet.3. Determine other loop resistance (Rloop): for example, sense resistance, displays, and/or PLC inputs. 4. Calculate Rworking = Re-e + Rloop.5. Determine any non-linear voltage drops due to the barrier (Vbarrier) from the barrier data sheet (for example, voltage drops due to diodes). 6. Calculate Vworking = Vsupply – Vbarrier.Using Vworking and Rworking, confirm that operation is within the shaded area of the graph Loop Voltage versus Loop Resistance on page 111Active 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 7206Stahl 9001/51-280-110-14Pepperl+Fuchs KSD2-CI-S-ExPepperl+Fuchs KFD2-STC3-Ex1MTL E02009 - verifyMTL E02010
Page 28 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmWiring2. Non-incendive wiring (only for USA/Canada)• For power demands see Curve 1 (General Purpose, Intrinsically Safe, Non-incendive) on page 111. • For wiring requirements download Wiring drawing (Non-incendive: FM/CSA) drawing number 23650637 from the product page of our website at: #####, or see page 30.Approval Rating Valid for: FM/CSA: Class I, Div. 2, Groups A, B, C, D T5 US/CanadaClass 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 / S1034567
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 29mmmmmWiringWiring drawing (Intrinsically Safe: FM/CSA)Product GroupFOR INTERNALUSE ONLY2365065300S. NGUYENPETERBOROUGH25 / JULY / 2005RADARFOR APPROVAL0E. DE SIMONER. CLYSDALE1:1 11NTSBSITRANS LR 250, HARTINTRINSICALLY SAFECONNECTION DIAGRAM236506530RPC SNJULY25/2005NOTES:1. ANY CSA / FM INTRINSICALLY SAFE BARRIER / POWER SUPPLY, WITH ITS OUTPUTVOLTAGE (Uo) NOT EXCEEDING 30 V AND ITS OUTPUT CURRENT (Io) LIMITED BYLOAD RESISTANCE (Ro); SUCH THAT Io = Uo / Ro, DOES NOT EXCEED 120 mA2. APPROVED DUST-TIGHT AND WATER-TIGHT CONDUIT SEALS ARE REQUIREDFOR CLASS II, DIV.1, Gr. E, F, G AND OUTDOOR NEMA 4X / TYPE 4X LOCATIONS3. THE MAXIMUM VOLTAGE OF THE NON-INTRINSICALLY SAFE APPARATUSMUST NOT EXCEED 250 V rms.4. UNDER THE ENTITY EVALUATION CONCEPT, THE LR 200 HAS THEFOLLOWING:Ui = 30 VOLTS D.C. Ii = 120 mA Pi = 0.8WCi=15nF Li=0.1mH5. SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY.6. INSTALL PER NEC / CEC7. USE SUPPLY WIRES RATED FOR 10 ° ABOVE.8. EXTERNAL BONDING HUBS ARE REQUIRED WHEN BOTH CONDUIT ENTRIES ARE USED.THE ENTITY EVALUATION CONCEPT IS A METHOD USED TO DETERMINEACCEPTABLE COMBINATIONS OF INTRINSICALLY SAFE APPARATUS ANDCONNECTED ASSOCIATED APPARATUS THAT HAVE NOT BEENINVESTIGATED IN SUCH COMBINATION.HAZARDOUS AREANON-HAZARDOUS AREASAFE AREA APPARATUSINTRINSICALLY SAFE(SEE NOTE 1)Load4–20mAENTITY CONCEPT DEFINITION: THE ENTITY CONCEPT ALLOWS THE INTERCONNECTIONS OF INTRINSICALLYSAFE APPARATUS TO ASSOCIATED APPARATUS NOT SPECIFICALLY EXAMINED IN SUCH COMBINATIONS.THE CRITERIA FOR INTERCONNECTION IS THAT THE VOLTAGE AND CURRENT WITH INTRINSICALLY SAFEAPPARATUS CAN RECEIVE AND REMAIN INTRINSICALLY SAFE, CONSIDERING FAULTS, MUST BE EQUAL ORGREATER THAN THE VOLTAGE (Uo) AND CURRENT (Io) LEVELS WHICH CAN BE DELIVERED BYTHE ASSOCIATED APPARATUS, CONSIDERING FAULTS AND APPLICABLE FACTORS. IN ADDITION, THE MAX.UNPROTECTED CAPACITANCE (Ci) AND INDUCTANCE (Li) OF THE INTRINSICALLY SAFE APPARATUS, INCL.INTERCONNECTING WIRING, MUST BE EQUAL OR LESS THAN THE CAPACITANCE AND INDUCTANCE WHICHCAN BE SAFELY CONNECTED TO THE ASSOCIATED APPARATUS.TO BE REPLACED WITH FLIP-OUT PAGE 23650653
Page 30 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmWiringWiring drawing (Non-incendive: FM/CSA)TO BE REPLACED WITH FLIP-OUT PAGE 23650637Product GroupFOR INTERNALUSE ONLY2365063700S. NGUYENPETERBOROUGH20 / JULY / 2005RADARFOR CONSTRUCTION0T. LITTLER. CLYSDALE1:1 11NTSASITRANS LR 250CLASS I, Div. 2CONNECTION DRAWING23650637 0RPC SN JULY20/2005NON-HAZARDOUS LOCATION(SAFE)HAZARDOUS LOCATIONCLASS I, DIV.2, GROUPS A, B, C, D24 VPOWERSUPPLYSITRANS LR 2501/2 “ NPTNOTES:METAL CONDUIT
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 31mmmmmWiringInstructions 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 03ATEX2142X: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 and temperature class T4.4. The equipment is certified for use in an ambient temperature range of –40 °C to 80 °C.5. The equipment has not been assessed as a safety related device (as referred to by Directive 94/9/EC Annex II, clause 1.5).6. 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).7. Repair of this equipment shall be carried out by suitably trained personnel in accordance with the applicable code of practice (e.g. EN 60079-19 within Europe).8. Components to be incorporated into or used as replacements in the equipment shall be fitted by suitably trained personnel in accordance with the manufacturer’s documentation.9. The ‘X’ suffix to the certificate number relates to the following special conditions for safe use:a. Parts of the enclosure may be non-conducting and may generate an ignition-capable level of electrostatic charge under certain extreme conditions. The user should ensure that the equipment is not installed in a location where it may be subjected to external influences which might cause a build-up of electrostatic charge on non-conducting surfaces. b. As either Aluminum, Magnesium, Titanium or Zirconium may be used at the accessible surface of the equipment, in the event of rare incidents, ignition sources due to impact and friction sparks could occur. This shall be considered when the SITRANS LR 250 is being installed in locations that specifically require group II, category 1G equipment. (continued on next page)
Page 32 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmWiring10. The certification of this equipment relies upon the following materials used in its construction:Aluminum alloy ANSI ref. A380.0 (aluminum enclosure option)Valox 365 (injection moulded plastic enclosure option)Ultem 1010 (window on plastic enclosure option)Stycast 2651-40FR encapsulant, catalyst IIThe detailed composition of Aluminum A380.0 as used in the metal enclosure (threaded lid option only) is as follows:Si – 8.5%, Fe – 1.3%, Cu – 3.5%, Mn – 0.5%, Mg – 0.1%, Ni – 0.1%, Zn – 3%, Sn – 0.35%, others – 0.5%, Al - balanceIn applications requiring category 1G or 1/2G equipment, SITRANS LR250 must not be exposed to materials to which the wetted parts1 of the instrument are not resistant.11. Equipment MarkingThe equipment marking contains at least the information on the product nameplate.1. Any surface (probe, o-rings, gaskets) exposed to the process fluid or gas.LR 250 Version Approval Rating Nameplate Intrinsically SafeATEX II 1 G, EEx ia IIC T4ATEX II 1 D, EEx tD A20 IP67 T90 °CIECEx SIR 05.0031X, Ex ia IIC, Ex tD A20 IP67 T90 °C T4FM/CSA: Class I, Div. 1, Groups A, B, C, D Class II, Div. 1, Groups E, F, GClass III T4See page 25Non-incendive FM/CSA: Class I, Div. 2, Groups A, B, C, D T5 See page 28
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 33mmmmmQuick StartQuick StartA Quick Start wizard groups together all the settings you need for a simple application. There are two ways to access the wizard:•Quick Start Wizard via the handheld programmer on page 35•Quick Start Wizard via SIMATIC PDM on page 38Activating SITRANS LR250Power up the instrument. SITRANS LR250 automatically starts up in Measurement (RUN) mode. Measurement mode (RUN mode) 1If more than one fault is present, the status indicator and text for each fault alternate at 2 second intervals. See General Fault Codes on page 79 for a list.Note: SITRANS LR250 supports SIMATIC PDM version 6.0 with SP2.Note: Keep infrared devices such as laptops, cell phones, and PDAs, away from SITRANS LR250 to prevent inadvertent operation.1. In response to a key press request. For details, see Navigating in PROGRAM mode on page 73.LEVEL[M]21.40 °CDATA EXCH.18.91134265Normal operation781 – toggle indicator for linear units or %2 – selected operation: level, space, or distance3 – measured value (level, space or distance)4 – units5 – bar graph indicates level6 – secondary region indicates electronics temperature, echo confidence, loop current, or distance17 – text area displays status messages 8 – device status indicatorS: 0 LOE S: 53 CONFIG LOFault present
Page 34 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML1998JE01mmmmmQuick StartProgramming SITRANS LR250• For detailed information see Appendix F: Local Operation Interface on page 94. or Parameter Reference on page 41.• To program SITRANS LR250 using the Quick Start wizard, follow the instructions below.The handheld programmer and PROGRAM mode display• Point the programmer at the display (from a maximum distance of 600 mm [2 ft.]), then press Right ARROW to activate PROGRAM mode and open menu level 1. (Mode opens the menu level last displayed in PROGRAM mode within the last 10 minutes, unless power has been cycled since then. Then menu level 1 will be displayed.)•Use ARROW keys to navigate to a menu item. The current selection is highlighted and the level number is shown. A pointer is visible if a lower level exists.• Press Down or Up ARROWS to scroll to the next selection.• At higher menu levels press Right ARROW to open the next menu level or Left ARROW to back up one level.• At the lowest menu level, parameters are listed, and no pointers are visible. Press Right ARROW to open parameter view.• In parameter view, the parameter name and number are displayed, as well as current selection or value. Press Right ARROW to open Edit mode. Notes: • See Appendix F: Local Operation Interface on page 94 for more detailed information on the programmer and the LCD display.• SITRANS LR250 automatically returns to Measurement mode after a period of inactivity in PROGRAM mode (between 15 seconds and two minutes, depending on the menu level). INPUT 2.2.1SENSOR CALIBVOL CONVERSIONVOLUME BREAKPTECHO PROC.SENSOR CALIBAPPLICATIO..2.2.1.2LIQUIDPREVIOUSNEXTBACK EDIThandheld programmer (ordered separately)Max. 600 mm (2 ft)displaymenu pointerparameter numberparameter selectionunlocked iconGRAPHIC TOBE REVISEDcurrent item numbercurrent itemparameter name
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 35mmmmmQuick Start• The current selection is highlighted. If required, scroll to a new selection or key in a new value and press Right ARROW to accept it. The LCD displays the new value.• Press Mode to return to Measurement mode.Quick Start Wizard via the handheld programmer1. Quick Starta. Point the programmer at the display (from a maximum distance of 600 mm [2 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 1.7.1.1. Application Type1.2. 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). Slower settings provide higher accuracy: faster settings allow for more level fluctuationNotes: • The wizard is a complete package and the settings are inter-related.• Because the settings are inter-related, the initial Quick Start parameter values are not default values and do not necessarily reflect the current device configuration.• Do not use the Quick Start wizard to modify individual parameters: see instead Parameter Reference on page 41.OptionsLIQUIDSOLIDLIQUID LOW DK (low dielectric liquid) OptionsSLOW 0.1 m/minuteMED 1.0 m/minuteFAST 10.0m/minuteAPPLICATIO..2.2.1.2SOLIDLIQUID LOW DKLIQUID
Page 36 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML1998JE01mmmmmQuick Start1.3. Sensor UnitsSelect the units for the Quick Start variables (high and low calibration point, and level, distance, or space)1.4. Operation 11.5. Low Calibration PointDistance from Sensor Reference to Low Calibration Point: usually process empty level. (See 1.4. Operation for an illustration.)1.6. High Calibration PointDistance from Sensor Reference to High Calibration Point: usually process full level. (See 1.4. Operation for an illustration.)1.7. 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.Options M, CM, MM, FT, INOptionsNO SERVICELEVEL Distance to material surface referenced from Low Calibration Point (process empty level).SPACE Distance to material surface referenced from High Calibration Point (process full level).DISTANCE Distance to material surface referenced from Sensor Reference Point.1. The point to which all of the above parameters are referenced. See SITRANS LR 250 Dimensions on page 14. Values Range: 0.0000 to 20.000 mValues Range 0.0000 to 20.000 mOptions YES, NOhigh calibration pointlow calibration pointlevelspacedistancesensor reference point1 Operation typesGRAPHIC TOBE REVISED
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 37mmmmmQuick StartLevel application exampleAuto False Echo SuppressionIf SITRANS LR250 displays a false high level, or the reading is fluctuating between the correct level and a false high level, you can use the Auto False Echo Suppression parameters to prevent false echo detection. See 2.2.5. TVT (Auto False Echo Suppression) setup on page 41 for instructions.Quick Start Setting DescriptionAPPLICATION LIQUIDRESPONSE RATE SLOW Response rate = 0.1 m/minute.UNITS mOPERATION LEVEL Material level referenced from Low Calibration Point.LOW CALIBRATION POINT 15.5 Process empty level.HIGH CALIBRATION POINT 1.0 Process full level.APPLY? (CHANGES) YES Save new settings.Sensor Reference Point Level Low Calibration PointHigh Calibration Point 15.5 m1.0 mSITRANS LR250 The application is a vessel that takes an average 3 hours to fill and 3 weeks to empty. Fill rate = 0.09 m/minute (15.5 / 180). Response rate has been set to slow: 0.1 m/minute, or slightly faster than the fill rateGRAPHIC TO BEREVISED
Page 38 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML1998JE01mmmmmQuick StartQuick Start Wizard via SIMATIC PDMThe graphical Quick Start Wizard groups together all the settings you need to make for a simple application into 4 steps.To use HART or PROFIBUS PA, you will need a PC configuration tool: we recommend SIMATIC PDM. Please consult the operating instructions or online help for details on using SIMATIC PDM. (Application Guides for setting up Siemens HART and PROFIBUS PA instruments with SIMATIC PDM are available on our website: www.siemens.com/processautomation.)Device Description (DD)You will need the DD for SIMATIC PDM version 6.0 with SP2. You can locate the DD in Device Catalog, under Sensors/Level/Echo/Siemens Milltronics/SITRANS LR250. If you do not see SITRANS LR250 under Siemens Milltronics, you can download the DD from the product page of our website at: https://pia.khe.siemens.com/index.asp?Nr=7427, under Downloads. 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 DD file and select it. Configuring a new device1. Set Address (default for PROFIBUS PA is 126; for HART is 0).• Press Right ARROW to activate PROGRAM mode and open menu level 1. • Press Down ARROW repeatedly to navigate to COMMUNICATION (menu item 5). • Press Right ARROW to display the parameter list.• Scroll to DEVICE ADDRESS and press Right ARROW to open parameter view. • If required, Press Right ARROW to open Edit mode. Key in a new value and press Right ARROW to accept it. The LCD displays the new value in parameter view.• Press Mode to exit PROGRAM mode2. You will need the most up-to-date Device Description (DD) for your instrument. Launch SIMATIC PDM – Manager Device Catalog, browse to the unzipped DD file and select it. 3. 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: https://pia.khe.siemens.com/index.asp?Nr=74274. Open the menu Device – Reset and click on Factory Reset.5. Upload parameters to the PC/PG.6. Calibrate the device via the Quick Start Wizard.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 39mmmmmQuick StartQuick Start Wizard stepsQuick Start stepsLaunch SIMATIC Manager, create a new project, open the menu Device – Quick Start, and follow steps 1 to 5.Notes: • The Quick Start settings are not independent parameters. The settings are inter-related, and changes only apply when you click Transfer at the end of step 4. • Do not use the Quick Start Wizard to modify individual parameters: see instead Parameter Reference on page 41.• Click BACK to return and revise settings, or Cancel to exit the Quick Start.• The layout of the dialog boxes shown may vary according to the resolution setting for your computer monitor.Note: The layout of the dialog boxes shown may vary according to the resolution setting for your computer monitor.Quick Start
Page 40 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML1998JE01mmmmmQuick StartStep 1 – IdentificationClick NEXT to accept the default values. (Description, Message, and Installation Date fields can be left blank.)Step 2 – ApplicationSelect the application type, and click NEXT. Note: At any stage after step 1, you can click BACK, to return and revise settings, or Cancel to exit the Quick Start.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 41mmmmmQuick StartStep 3 – Vessel ShapeSelect the vessel shape, and click NEXT.Step 4 – RangeSet the parameters, and click NEXT.
Page 42 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML1998JE01mmmmmQuick StartStep 5 – SummaryCheck parameter settings, and click BACK to return and revise values, or FINISH to transfer values to the device.The message Quick Setup was successful will appear. Click OK.Using Linearization via the Quick Start wizardYou 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. Ex ample:Note: values are for example purposes only.420950Breakpoint number321Breakpoint NumberLevel value(m)Volume value(l)10 0255003930004208000Level value
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 43mmmmmQuick StartOpen the menu Device – Quick Start:1. In Step 1 – Identification, press Next, to accept default values.2. In Step 2 – Application, select a volume application type, for example Volume in a vessel, and press Next.3. In Step 3 – Vessel Shape, choose the vessel shape option Linearization Table and click Linearization.a. In the Linearization window click on the appropriate Breakpoint tab to open the dialog window.linearizationBreakpoints 1 - 8
Page 44 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML1998JE01mmmmmQuick Startb. Enter the desired level and volume values, and press OK.c. In the Step 3 window, click NEXT.4. In Step 4 – Range Setup, enter parameter values, and click NEXT.Note: Reset resets values to the values in the offline table.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 45mmmmmQuick Start5. In Step 5 – Summary, check parameter values. Click BACK to return and revise values, or FINISH to transfer values to the device.The message Quick Setup was successful will appear. Click OK.
Page 46 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmLocal InterfaceLocal Operation Interface• The handheld programmer allows you to change parameter values and set operating conditions to suit your specific application. • View settings on the LCD display, or request an echo profile, in PROGRAM mode. • View the measured value and additional status information, on the LCD display in Measurement mode (RUN mode).Parameter accessParameters are identified by name and organized into function groups, then arranged in a hierarchical menu structure (see LCD menu structure on page 115). For example: The LCD DisplayMeasurement mode (RUN mode)Normal operationIf more than one fault is present, the status indicator and text for each fault alternate at 2 second intervals. See General Fault Codes on page 79 for a list.Note: The complete range of parameters is only accessible via PDM. See Parameter Reference on page 47 for a complete list with instructions.2. SETUP2.2. INPUT2.2.1 SENSOR CALIB2.2.1.13. RESPONSE RATELEVEL[M]21.40 °CDATA EXCH.18.91134265781 – measured value (level, space or distance)2 – toggle indicator for linear values or %3 – level, distance, or space4 – units5 – bar graph indicates level6 – secondary region indicates electronics temperature, echo confidence, loop current, or distance in response to a key press. (See Key functions in Measurement mode on page 47).7 – text area displays status messages8 – device status indicatorS: 0 LOE S: 53 CONFIG LOFault present
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 47mmmmmLocal InterfaceHandheld Programmer (Part No. 7ML5830-2AJ)Key functions in Measurement modeKey Function ResultUpdates the loop current. New value is displayed in LCD secondary region. Updates internal enclosure temperature reading.New value is displayed in LCD secondary region.Updates echo confidence value. New value is displayed in LCD secondary region.Updates distance measurement. New value is displayed in LCD secondary region.Mode opens PROGRAM mode.Opens the menu level last displayed in this power cycle, unless power has been cycled since exiting 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.Cnumeric keysfunction keys
Page 48 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmLocal InterfacePROGRAM mode displayNavigation viewParameter viewEdit viewMenu bar in navigation viewINPUT 2.2.1SENSOR CALIBVOL CONVERSIONVOLUME BREAKPTECHO PROC.SENSOR CALIBcurrent item numberlock/unlock iconpointercurrent itemcurrent menu menu bar (see below for details)parameter nameparameternumberparameter nameAPPLICATIO..2.2.1.2LIQUIDPREVIOUSNEXTBACK EDITAPPLICATIO..2.2.1.2SOLIDLIQUID LOW DKLIQUID• A visible menu bar indicates the menu list is too long to display all items.• 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.• A band halfway down the menu bar indicates the current item is halfway down the list.SENSOR CAL2.2.1.6LOW CALIB. PT.HIGH CALIB. PT.NEAR RANGEFAR RANGELOW CALIB. PT.HIGH CALIB. PT.menu baritem band
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 49mmmmmLocal InterfaceProgramming via the handheld programmerThe handheld programmer allows you to change parameter values and set operating conditions to suit your specific application.• For the complete list of parameters with instructions, see Parameter Reference on page 47.•See LCD menu structure on page 115 for a chart.1. Enter PROGRAM mode• Point the programmer at the display (from a maximum distance of 600 mm [2 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 modeNotes: • Do not use the Quick Start settings if you want to modify an individual parameter.• The Quick Start wizard groups the settings required for a simple application into one package and the settings are inter-related.• Because the settings are inter-related, the initial Quick Start parameter values are not default values and do not necessarily reflect the current device configuration.• SITRANS LR250 automatically returns to Measurement mode after a period of inactivity in PROGRAM mode (between 25 seconds and 10 minutes, depending on the menu level).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 at first item: menu 1, item 1.displayhandheld programmer (ordered separately)Max. 600 mm (2 ft)
Page 50 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmLocal Interface3. Editing in PROGRAM modeSelecting a listed optiona. Navigate to the desired parameter.b. Press Right ARROW to open parameter view.c. 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 ARROWSelecting 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 modeparameter namecurrent selectionparameternumberAPPLICATIO..2.2.1.2LIQUIDPREVIOUSNEXTBACK EDITAPPLICATIO..2.2.1.2SOLIDLIQUID LOW DKLIQUIDcurrent valueparameternumberLOW CALIB..2.2.1.620.000 MPREVIOUSNEXTBACK EDITparameter nameLOW CALIB..2.2.1.620.000 M+20.000
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 51mmmmmLocal InterfaceEcho Profile Viewing1. In PROGRAM mode, navigate to LEVEL METER > DIAGNOSTICS > ECHO PROFILE2. Press Right ARROW to request a profile.3. In the Profile screen, press Up ARROW to select the Transmit icon, and Right ARROW to update the profile. 4. Press Down ARROW to select the Exit icon, then Right ARROW to return to previous menu.Left ARROW: Selecting optionsCancels 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.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.Key Name Function (Cont’d)CDIAGNOSTICS3.1ECHO PROFILEMEAS. VALUESREMAIN. DEV. LIFEREMAIN. SENS.LIFEECHO PROFILEMEAS. VALUESREMAIN. DEV. LIFEREMAIN. SENS.LIFEtransmit icon, selectedtransmit icon, unselectedexit icon, selectedexit icon, unselected
Page 52 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmSIMATIC PDMOperating SITRANS LR250 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.fielddevices.com: go to Products and Solutions > Products and Systems > Process Device Manager.)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. For information on adjusting parameter values and viewing the results, see Alternatively, enter values for Point and Offset directly into the dialog boxes. on page 56 and Accessing Functions on page 57.SIMATIC PDM Rev. 6.0, SP2 FeaturesThe graphical interface facilitates the following tasks:• Configuring LR250 for a simple application: see Quick Start Wizard via SIMATIC PDM on page 38.• Volume measurement in an irregular vessel: see Using Linearization via the Quick Start wizard on page 42.• Level monitoring: see Online Display on page 53• Echo monitoring: see Echo profile saving on page 56 • Level trend monitoring: see Alternatively, enter values for Point and Offset directly into the dialog boxes. on page 56 • False Echo Suppression: see Auto False Echo Suppression Setup on page 55 and Manual TVT Shaper on page 56.Accessing FunctionsYou have access to a number of functions via pull-down menus from the menu bar View menus include: Display (real-time), Echo Profile, and Trend (level over time) diagram, among others.Note: For a complete list of parameters with instructions, see Parameter Reference starting on page 61.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 53mmmmmSIMATIC PDMOnline DisplayThe online display allows you to compare outputs in real time. Open the menu View – Display.Changing parameter settings using SIMATIC PDM1. Launch SIMATIC PDM, connect to SITRANS LR250, and upload data from the device.2. Adjust parameter values in the parameter value field then press Enter. The status fields read Changed..3. Open the Device menu, click on Download to device, then use File – Save, to save parameter settings. The status fields are cleared.Parameters accessed via pull-down menusSee Pull-down menus via SIMATIC PDM on page 43 for a complete list of parameters that can be accessed only via pull-down menus in SIMATIC PDM.Note: For a complete list of parameters, see Parameter Reference on page 61.value fields
Page 54 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmSIMATIC PDMConfiguring a new deviceDevice Description (DD)You will need the DD for SIMATIC PDM version 6.0 with SP2. You can locate the DD in Device Catalog, under Sensors/Level/Echo/Siemens Milltronics/SITRANS LR 460. If you do not see SITRANS LR 460 under Siemens Milltronics, you can download the DD from the product page of our website at: https://pia.khe.siemens.com/index.asp?Nr=14655, under Downloads. 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 DD file and select it. 1. Set Address (default for PROFIBUS PA is 126; for HART is 0).• Point the handheld programmer at the display then press Mode to activate PROGRAM mode, menu item 1.0. • Press Down ARROW , Right ARROW , Right ARROW to navigate to Address (menu item 2.1.2). • Press Right ARROW to open Edit mode: the PROGRAM icon will flash.• If required, key in a new value and press Right ARROW to accept it. The LCD displays the new value and the PROGRAM icon disappears.2. You will need the most up-to-date Device Description (DD) for your instrument. Launch SIMATIC PDM – Manager Device Catalog, browse to the unzipped DD file and select it. 3. Launch SIMATIC Manager and create a new project for LR 460. Application Guides for setting up HART and PROFIBUS PA devices with SIMATIC PDM.can be downloaded from the product page of our website at: https://pia.khe.siemens.com/index.asp?Nr=146554. Open the Menu Device – Reset and click on Factory Reset.5. Upload parameters to the PC/PG.6. Calibrate the device.Calibrating LR 460 via PDM•See Quick Start Wizard via SIMATIC PDM on page 30 and follow 4 steps to setup for a simple application.• Open the menu Device – Sensor Calibration to set parameters individually.• For a complete list of parameters see Parameter Reference on page 43.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 55mmmmmSIMATIC PDMResetDevice Reset This has the same effect as cycling power. It does not reset any parameters.Factory ResetUse Factory Reset to reset all parameters excluding device addresses to the default settings.1. Open the menu Device – Reset and click on Factory Reset.2. After the reset is complete upload parameters to the PC/PG.Configuration Flag Reset (HART only)To reset the configuration flag to zero, open the menu Device – Configuration Flag Reset and execute a reset.Auto False Echo Suppression Use this parameter to learn a new TVT curve, to avoid false echoes caused by obstructions. See Auto False-Echo Suppression on page 71 for a more detailed explanation, and Auto False Echo Suppression on page 74 for instructions
Page 56 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmSIMATIC PDMManual TVT ShaperOpen the menu Device – TVT Shaper• Change the position of the X cursor on the TVT curve using the Point+ and Point– buttons: raise and lower the curve using Offset+ and Offset–.• Alternatively, enter values for Point and Offset directly into the dialog boxes. Notes: • For more details, see Auto False-Echo Suppression on page 75.• Double click each axis and record the Xscale and Data Scale values, so that you can restore the default view by resetting to these values.TVT curveX cursorecho profile
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 57mmmmmSIMATIC PDMEcho profile savingTrend Diagram (Level Trend over Time)Open the menu View – TrendNotes: • Double click each axis and record the Xscale and Data Scale values, so that you can restore the default view by resetting to these values.• You can save a profile or delete a saved profile.• After saving a profile open menu View – Show echo profile.Notes: • Double click each axis and record the Xscale and Data Scale values, so that you can restore the default view by resetting to these values.deletesavetrend line
Page 58 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmApplicationsApplication ExamplesYou can use these examples as setup references. Enter the values in the parameter tables to select the corresponding functions.Example 1: Liquid resin in storage vessel, level measurementReturn to Measurement: press Mode to start normal operation.Notes: • The minimum distance from the flange face to the target is limited by near range 2.2.1.11.• Only set 2.2.5.6 (Auto False Echo Suppression) if the product is at least 2 m (78”) away from the flange face. If it is closer, leave 2.2.5.6 at 1 until the level drops and the distance increases beyond 2 m (78”).Parameter Description Value Function2.2.1.5 operation Level Level2.2.7.1 measurement response Med 1 m/minute2.2.1.4 units Mmeters2.2.1.6 low calibration point 55 m2.2.1.7 high calibration point 4.5 4.5 m2.4.1 Failsafe timer 22 minutes2.4.2 Failsafe Material Level HI Hi 2.2.5.7 Auto False-Echo Suppression Distance[Distance1 minus 0.42 m]1. Distance to product from reference point.Sets length of learned TVT curve2 to use2. For more details see Range (Auto Suppression Range) on page 75 and Auto False Echo Suppression on page 74. 2.2.5.6 Auto False-Echo Suppression 2 then 1Enables the use of learned TVT curve2.The application is to obtain a level measurement and corresponding 4 to 20 mA output proportional to resin levels in a storage vessel. Low Calibration Point is the bottom of the tank, which is 5 m from the antenna flange face. High Calibration Point is 4.5 m from the vessel bottom. The maximum rate of filling or emptying is about 0.2 m/min. In the event of a loss of echo, SITRANS LR250 is to go into Failsafe Hi after 2 minutes.4.5 m Low Cal Point5 m 100% Level0% LevelHighCalPointSensorreferencepointGRAPHIC TO BE UPDATED
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 59mmmmmApplicationsExample 2: Horizontal vessel with volume measurementThe application is to obtain a level measurement and corresponding 4 to 20 mA output proportional to vessel volume in a chemical vessel.Low Calibration Point is the bottom of the tank, which is 3.5 m from the antenna flange face. High Calibration Point is 3.0 m from the vessel bottom. The maximum rate of filling or emptying is about 0.2 m/min. Selecting tank shape i at 2.2.2.1 (Vessel Shape), and entering values for A and L, will give a volume reading instead of level.In the event of a loss of echo, SITRANS LR250 is to go into Failsafe Hi after 2 minutes.Notes: • The minimum distance from the flange face to the target is limited by near range 2.2.1.11.• Only set 2.2.5.6 Auto False Echo Suppression if the product is at least 2 m (78”) away from the flange face. If it is closer, leave 2.2.5.6 at 1 until the level drops and the distance increases beyond 2 m (78”).Volume reading 3.0 m 3.5 m A2.2.3.2A2.2.3.2L2.2.3.3Hi Cal PointLow Cal Point100% = 8000 litersSensor reference pointGRAPHIC TO BE UPDATED
Page 60 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmApplicationsReturn to Measurement: press Mode to start normal operation.Parameter Description Values Function2.2.1.5 operation Level Volume replaces Level when a tank shape is selected at 2.2.2.12.2.7.1 measurement response Med 1 m/minute2.2.1.4 units Mmeters2.2.1.6 low calibration point 3.5 3.5 m2.2.1.7 high calibration point 33 m2.2.2.1 vessel shape iparabolic ends2.2.3.1 maximum volume 8000 8000 liters2.2.3.2 vessel dimension A .8 0.8 meters2.2.3.3 vessel dimension L 66 meters2.4.1 Failsafe timer 22 minutes2.4.2 Failsafe HI Hi 2.2.5.7Auto False-Echo Suppression Range[Distance1 minus 0.42 m]1. Distance to product from reference point.Sets length of learned TVT curve2 to use2. For more details see Range (Auto Suppression Range) on page 75 and Auto False Echo Suppression on page 74. For an explanation, see Auto False-Echo Suppression on page 108.2.2.5.6 Auto False-Echo Suppression 2 then1Enables the use of learned TVT curve2.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 61mmmmmParametersParameter ReferenceParameters are identified by name and organized into function groups. Menus arranged on up to five levels give access to associated features and options. Parameters accessible via the handheld programmer are preceded by a number. (See LCD menu structure on page 115 for a chart.) Parameters not preceded by a number are accessible only via SIMATIC PDM.Some parameters are accessible in SIMATIC PDM via pull-down menus. Where those parameters can also be accessed via the handheld programmer, they are found in the numbered list, and directions for SIMATIC PDM are given beside the individual parameter. Page references for further information can be found under Pull-down menus via SIMATIC PDM below. Pull-down menus via SIMATIC PDMQuick Start WizardThe Quick Start wizard groups together all the settings you need to configure for a simple application. • The wizard is a complete package and settings are inter-related. • Because the settings are inter-related, the initial Quick Start parameter values are not default values and do not necessarily reflect the current device configuration.• Do not use the wizard to modify individual parameters.• You can access the Quick Start wizard either via SIMATIC PDM, or via the handheld programmer.Device menus page View menus pageCommunication path - Display -Download to deviceUpload to PC/PGUpdate diagnostic status---TrendEcho ProfileShow Echo ProfileStatusRead Analog ValueClear FaultsPeak ValuesWear373737---5248Quick StartAuto False Echo SuppressionTVT shaper627476MaintenanceSelftestResetConfiguration Flag Reset87-87-D/A TrimWrite Locking4248Simulate AO 42HART CommunicationSimulation8742Sensor Calibration 50
Page 62 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParameters1. Quick Start1.1. Application Type1.2. 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). Slower settings provide higher accuracy: faster settings allow for more level fluctuation1.3. Sensor UnitsSelect the units for the Quick Start variables (high and low calibration point, and level, distance, or space).1.4. OperationOperation types1OptionsLIQUIDSOLIDLIQUID LOW DK (low dielectric liquid) OptionsSLOW 0.1 m/minuteMED 1.0 m/minuteFAST 10.0m/minuteOptions M, CM, MM, FT, INOptionsNO SERVICELEVEL Distance to material surface referenced from Low Calibration Point (process empty level).SPACE Distance to material surface referenced from High Calibration Point (process full level).DISTANCE Distance to material surface referenced from Sensor Reference Point.1. The point from which level measurement is referenced. See SITRANS LR 200 Dimen-sions on page 14 for the standard rod antenna. See Appendix D: Flange Adapter Ver-sions on page 83 for other configurations.high calibration pointlow calibration pointlevelspacedistancesensor reference point1
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 63mmmmmParameters1.5. Low Calibration PointDistance from Sensor Reference to Low Calibration Point: usually process empty level. (See Operation types for an illustration.)1.6. High Calibration PointDistance from Sensor Reference to High Calibration Point: usually process full level. (See Operation types for an illustration.)1.7. Apply? (Apply changes)In order to save the Quick Start settings it is necessary to select Yes and apply changes.2. Setup2.1. Device2.1.1. LCD Contrast Allows you to adjust the LCD contrast. to improve readability.2.2. Input 2.2.1. Sensor Calibration2.2.1.1. AntennaIdentifies horn configuration and automatically adjusts the Near Range (blanking) distance to suit.Use this parameter to reset the Near Range (blanking) distance, if your horn has to be replaced by one of a different type.Values Range: 0.0000 to 20.000 mValues Range 0.0000 to 20.000 mOptions YES, NONotes: • See Programming via the handheld programmer on page 32 or Appendix M: Operating SITRANS LR 200 (PROFIBUS PA) via SIMATIC PDM on page 118 for instructions.• Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated.• Values shown in the following tables can be entered via the handheld programmer.Values Range: 0 (High contrast) to 20 (Low contrast). Default: 8Options 1.5" horn2" horn3" horn4" horn
Page 64 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParameters2.2.1.2. ApplicationAutomatically configures the device to operate in the chosen application type, by changing one or more of the following parameters: 2.2.1.14. Propagation Factor , 2.2.4.1.2. Position , and/or 2.2.4.4.3. Low dK Material Tracking .You can configure each of the related parameters, to suit your particular application.2.2.1.3. 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). Slower settings provide higher accuracy: faster settings allow for more level fluctuation.2.2.1.4. Sensor UnitsUnits the sensor is measuring in.OptionsSOLID*LIQUIDLIQUID LOW DK (low dielectric liquid)Related parameters 2.2.1.14. Propagation Factor 2.2.4.1.2. Position 2.2.4.4.3. Low dK Material Tracking Related parametersResponseRate Fill Rate Empty Rate*slow 0.1 m/minute 0.1 m/minutemedium 1 m/minute 1 m/minutefast 10 m/minute 10 m/minuteNote: Changing Response Rate resets Fill Rate and Empty Rate. Values m, cm, mm, ft, inDefault: m
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 65mmmmmParameters2.2.1.5. OperationOperation types12.2.1.6. Low Calibration Pt. Distance from Sensor Reference to Low Calibration Point (corresponding to Low Level Point). Unit is defined in Sensor units. (In SIMATIC PDM, go to Device menu > Sensor Calibration, then click on Additional Information, to see an illustration.)2 OptionsNO SER-VICELEVEL Distance to material surface referenced from Low Calibration Point (process empty level).SPACE Distance to material surface referenced from High Calibration Point (process full level).DISTANCE Distance to material surface referenced from Sensor Reference Point.1. The point from which level measurement is referenced. See SITRANS LR 200 Dimen-sions on page 14 for the standard rod antenna. See Appendix D: Flange Adapter Ver-sions on page 83 for other configurations.Values Range: 0 to 20 m. Default 20.000 mhigh calibration pointlow calibration pointlevelspacedistancesensor reference point1 High Level Point(default: 100%)sensor reference point2 Low Level Point(default: 0%)LevelLow Calibration PointHigh Calibration PointLevel OffsetSensor value1
Page 66 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParameters2.2.1.7. High Calibration Pt. Distance from Sensor Reference to High Calibration Point (corresponding to High Level Point). Unit is defined in Sensor units. (In SIMATIC PDM, go to Device menu > Sensor Calibration, then click on Additional Information, to see an illustration.)2.2.1.12. Near RangeThe range in front of the device (measured from the sensor reference point) within which any echoes will be ignored, defined in sensor units. This is sometimes referred to as blanking or a dead zone. The factory set range is dependent on the horn type.Compensates, for example if the sensor head is changed.2.2.1.13. Far RangeAllows the material level to drop below Low Calibration Point without generating a Loss of Echo (LOE) state, defined in %. This is sometimes referred to as Range Extension.Use this feature if the measured surface can drop below the Low Cal. Point in normal operation. Enter value as a percentage of Low Calibration Point.2.2.1.14. Propagation FactorCompensates for the change in microwave velocity from propagation in free space.The value is used to compensate for changes in microwave velocity due to propagation within a metal stillpipe, instead of in free space.2. The value produced by the echo processing which represents the distance from sen-sor reference point to the target.Values Range: 0 to 20 m. Default 0.000 mOptionsRange: 0 to 20 m Antenna Type Near Range Default Setting1.5" horn 0.185 m (7.28")2" horn 0.217 m (8.54")3" horn 0.250 m (9.84")4" horn 0.305 m (12.01")Options Range: 0 to >1300 (max. value depends on Low Cal-ibration Point settin). Default 5.000%Values Range: 0.3000 to 1.5000Default: 1.0 0 0Pipe Size (I.D.)aa. Since pipe dimensions may vary slightly, the propagation factor may also vary. Propagation Factor50 mm (2”) 0.99080 mm (3”) 0.996100 mm (4”) 0.998150 mm (6”) 0.999200 mm (8”) 1.000
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 67mmmmmParameters2.2.1.15. Level Offset A constant offset that can be added to Level to form Level output. The unit is defined in Sensor Units.2.2.2. Volume conversionCarries out a volume conversion from a level value. 2.2.2.1. 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.Note: When operating with a waveguide antenna or stillpipe, values for the parameter 2.2.4.4.3. Low dK Material Tracking and for the propagation factor should be set according to the antenna/pipe size: see the table below..Antenna/Pipe Size (I.D.) 50 mm (2”) 80 mm (3”) 100 mm (4”) 150 mm (6”)200 mm (8”)Propagation Factor 0.990 0.9957 0.9965 0.999 0.9994Low dK material tracking valueCal Lo – 700 mmCal Lo – 1000 mmCal Lo – 1000 mmCal Lo – 1000 mmCal Lo – 1000 mmValues Default: 0 mVessel Shape Description Also required a* None no volume calculation required N/Abflat end horizontal cylinder maximum volumec sphere maximum volume
Page 68 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParametersdupright, linear (flat bottom) maximum volumeeconical or pyramidal bottom maximum volume, dimension Af parabolic bottom maximum volume, dimension Ag half-sphere bottommaximum volume, dimension Ah flat sloped bottom maximum volume, dimension Aiparabolic end horizontal cylindermaximum volume, dimension A, dimension Ljlinearization table(level/volume breakpoints)maximum volume, level breakpoints, volume breakpointsVessel Shape Description Also required AAAAAL
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 69mmmmmParameters2.2.3. Volume Breakpoints2.2.3.1. Maximum VolumeThe maximum volume of the tank. Enter the vessel volume corresponding to High Calibration Point. For example, if your maximum vessel volume is 8000 L, enter a value of 8000. The units of volume are not entered, but are implied. 2.2.3.2. Dimension AThe height of the vessel bottom in sensor units 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 2.2.2.1. Vessel Shape for an illustration.2.2.3.3. Dimension LLength of the cylindrical section of a horizontal parabolic end vessel, in sensor units. See 2.2.2.1. Vessel Shape for an illustration.2.2.3.4. 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 sensor units. Volume units are defined by the user but are not explicitly stated in the SITRANS LR250.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. Breakpoints are grouped into four tables: Table 1-8, Table 9-16, Table 17-24, and Table 25-32.Entering breakpoints via the hand-held programmer:a. Go to the appropriate table for the particular breakpoint you wish to adjust: for example, go to Table 1-8 for breakpoint 1. Values Range: 0.0000 to 99999Default: 100.0Related ParametersLow Calibration PointHigh Calibration PointVessel Shape Values Range: 0.0000 to 99999 in unitsDefault: 0.0Related Parameters Vessel ShapeValues Range: 0.0000 to 99999 in unitsDefault: 0.0Related Parameters Vessel ShapeLevel Values Range: 0.0000 to 99999 (m, cm, mm, ft, in)Default: 0.0Volume Values Range: 0.0000 to 99999Default: 0.0
Page 70 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParametersa. Under Table 1-8, go to 2.2.3.4.1. Level 1 to enter the level value for the breakpoint 1. a. Under Table 1-8, go to 2.2.3.4.2. Vol 1 to enter the volume value for the breakpoint 1a. Repeat steps a to c, till values have been entered for all required breakpoints.2.2.3.4.1. 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.2.2.3.4.2. Vol 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.See example below for illustration.Example:Entering breakpoints via PDM:a. Level values are defined in Sensor Units. If you want to change the unit, go to Input > Sensor Calibration > Sensor Units and make a new selection.a. Go to > Volume conversion and select Linearization Table option.a. Go to > Volume breakpoints > Table 1-8 and enter values for level and volume breakpoints in table.a. Repeat step c till values have been entered for all required breakpoints using other tables as required.Note: values are for example purposes only.420950Breakpoint number321Breakpoint NumberLevel value(m)Volume value(l)10 0255003 9 30004 20 8000Level value
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 71mmmmmParameters2.2.4. Echo Processing2.2.4.1. Echo select2.2.4.1.1. AlgorithmSelects the algorithm to be applied to the echo profile to extract the true echo. 2.2.4.1.2. Position Defines where on the echo the distance measurement is determined.2.2.4.1.3. 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 LOE timer. When Echo Confidence exceeds the Confidence Threshold, the echo is evaluated. Use this feature when an incorrect material level is reported. Options*FFirst echoLLargest echo (reserved for SMPI service personnel)BLF Best of Largest or First echo (reserved for SMPI service personnel)Note: If dielectric of fluid to be monitored is less than 3, we recommend setting Position to 4 (Hybrid) and 2.2.4.4.3. Low dK Material Tracking to 0.5 m (1.64 ft).OptionsCenter*Hybrid (Center and CLEF)CLEF (Constrained Leading Edge Fit)Related parameters2.2.4.4.Tank Bottom Algorithm (see below)Values Range: 0 to 99Default: 10Related Parameters LOE Timer
Page 72 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParameters2.2.4.2. Sampling2.2.4.2.1. Echo LockSelects the measurement verification process. If a material agitator or mixer is used in the monitored vessel, Echo Lock should be set for Maximum Verification or Material Agitator to avoid agitator blade detection. 2.2.4.2.4. Sampling up1 Once echo is outside the window, a specified number of consecutive echoes must appear above the echo locked onto, before measurement is accepted as valid. 2.2.4.2.5. Sampling down1Once echo is outside the window, a specified number of consecutive echoes must appear below the echo locked onto, before measurement is accepted as valid. 2.2.4.2.6. Window1A "distance window" centered on the echo, used to derive the reading. When a new measurement is in the window, the window is re-centered and the reading is calculated (see Display before Auto False Echo Suppression, page 75 for an illustration). When the value is 0, the window is automatically calculated after each measurement. • For slower Measurement Response values, the window is narrow.• For faster Measurement Response values, the window becomes progressively wider.Note: Ensure the agitator is always running while SITRANS LR250 is monitoring the vessel, to avoid stationary blade detection.OptionsLock OffMaximum Verification*Material AgitatorTot al L o ckRelated parametersFill RateEmpty RateEcho Lock SamplingEcho Lock WindowAlgorithm1. This parameter is for use only by Siemens Milltronics service technicians.Note: The echo lock window is stored as standard sample, but displayed sensor units. Any value entered for the echo lock window will be rounded to the nearest sample.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 73mmmmmParameters2.2.4.3. Filtering2.2.4.3.3. Damping FilterThe time constant for the damping filter. The engineering unit is always in seconds. This is an exponential filter. When a change occurs in teh input, the output will be at 63.2% of the change in one time constatn, and will be at full change after 5 time constantsWe recommend setting 2.2.4.1.2. Position to 4 (Hybrid Algorithm) and setting 2.2.4.4. Tank Bottom Algorithm to 0.5 m (1.64). 2.2.4.4. Tank Bottom Algorithm2.2.4.4.3. Low dK Material TrackingCompensates for materials with a low dK value, which may cause the tank bottom to be reported as the level instead of the actual material level at low level conditions.If the dK of the material is less than 3 we recommend setting this parameter to 0.5 m.2.2.4.5. Noise2.2.4.5.1. ConfidenceMeasures echo reliability. It displays the echo confidence of the measurement echo from the last shot. Confidence Threshold defines the minimum criterion for echo confidence.Open the menu View – Profile. 2.2.4.5.2. StrengthDisplays the absolute strength (in dB above 1 µV rms) of the echo selected as the measurement echo.Open the menu View – Profile.Values Range: 0 to 100.000 sDefault: 10.000 mValues *0Range: 0 to 20 m (0 to 65.6 ft)0.5 m Default: 0.0 mRelated parameters2.2.4.1.2.Position (see above)Values (view only) 0 to 99---- Shot not usedRelated Parameters Confidence ThresholdValues (view only) –20 to 99
Page 74 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParameters2.2.4.5.3. 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. Open the menu View – Noise.2.2.5. TVT (Auto False Echo Suppression) setupFirst SITRANS LR250 learns the echo profile. Then the learned profile, or part of the learned profile, is used to screen out false echoes. See Display before Auto False Echo Suppression on page 75 for examples.2.2.5.1. TVT Hover Level Defines in percent how high the TVT (Time Varying Threshold) curve is placed above the echo profile, with respect to largest echo. When SITRANS LR250 is located in the center of the vessel, lower this parameter to prevent multiple echo detections. (For an illustration, see Display before Auto False Echo Suppression and Example after Auto False Echo Suppression, page 75)2.2.5.6. Auto False Echo Suppression Enables a ’learned’ TVT curve to be used in place of the default TVT curve. Use this feature to ignore false echoes before the material echo. Set Auto Suppression Range first. (See below for an illlustration.)a. Rotate the instrument for best signal (lower false-echo amplitude).b. Go to Range, and set the value (see 2.2.5.7. Range (Auto Suppression Range) ).c. Open the menu Device – Auto False Echo Suppression and select the option to change it.d. Select Learn. The device will automatically revert to On (Use Learned TVT) after a few seconds.Notes: • If modifying these parameters via SIMATIC PDM, close all online windows.• This function works best when the vessel is empty or nearly empty. Use it only if there is a minimum distance of 2 meters from the radar instrument to the material.• Set Auto False Echo Suppression and Auto False Echo Suppression Distance during startup, if possible.• If the vessel contains an agitator, the agitator should be running. Values Range: 0 to 100%Default: 40%Options0Off1On (Enable Auto False Echo Suppression)2"Learn" the TVT curve
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 75mmmmmParameters2.2.5.7. Range (Auto Suppression Range)Defines the endpoint of the Learned TVT distance. Units are defined in sensor units.a. Go to Input > TVT Setup > Range.b. Determine the actual distance from the antenna reference point to the material surface. c. Subtract 0.42 m (16.5") from this distance, and enter the result.Values Range: 0.00 to 20.00 mDefault: 1.0 0 mDisplay before Auto False Echo Suppression Default TVTTVTHover LevelLevel (db)EchoMarkerWindowExample after Auto False Echo Suppression learned TVT curveliquid levelfalse echoLevel (db)false echo
Page 76 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParameters2.2.5.8. Shaper ModeAdjusts the TVT curve at a specified range.2.2.6. TVT shaperA breakpoint on the TVT curve, normalized to 0. This parameter is for authorized Siemens Milltronics service personnel or technicians only.2.2.6.1. Shaper 1-92.2.6.2. Shaper 10-182.2.6.3. Shaper 19-272.2.6.4. Shaper 28-362.2.6.5. Shaper 37-402.2.7. Rate2.2.7.1. 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). Slower settings provide higher accuracy: faster settings allow for more level fluctuation2.2.7.2. Fill RateDefines the maximum rate at which the reported sensor value 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 Sensor Units per minute. Values Range: 0 to 50 dBDefault: 0 dBOptions*SLOW0.1 m/minuteMED 1.0 m/minuteFAST 10.0m/minuteValues Range: 0.0000 to 99999 m / min.Factory setting: 0.1 m/min.Altered by Response RateRelated parameters Sensor UnitsOptions Meters/MinuteSlow 0.1Medium 1Fast 10
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 77mmmmmParameters2.2.7.3. Empty rateDefines the maximum rate at which the reported sensor value 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 Sensor Units per minute. 2.2.8. Transducer Block (TB) Values (for diagnostic purposes)2.2.8.1. Reading MeasurementThe value for level, or volume (if volume conversion is selected). Read Only.2.2.8.2. Material MeasurementThe value for level. Read Only.In SIMATIC PDM, open the menu View – Display, and select the tab Display Level Value panel.2.2.8.3. Space MeasurementThe value for space. Read Only.In SIMATIC PDM, open the menu View – Display, and select the tab Display Space Measurement panel.2.2.8.4. Distance MeasurementThe value for distance. Read Only.In SIMATIC PDM, open the menu View – Display, and select the tab Display Distance Measurement panel.2.2.8.5. Volume MeasurementThe value for volume. Read Only.In SIMATIC PDM, open the menu View – Display, and select the tab Display Volume Measurement panel.Values Range: 0.0000 to 99999 m / min.Factory setting: 0.1 Altered by Response RateRelated Sensor UnitsOptions Meters/MinuteSlow 0.1Medium 1Fast 10
Page 78 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParameters2.2.8.6. Sensor ValueThe value of the sensor. Read Only.In SIMATIC PDM, open the menu View – Display, and select the tab Display Sensor Value.2.3. Output 2.3.1. mA Output2.3.1.1. mA Output ValueThe loop current value in mA. Read Only except if the Manual option is chosen in mA Output function below (2.3.1.2).2.3.1.2. mA Output FunctionAlters the mA output/measurement function and allows the output to be set independently.ValuesUser Entry only if Manual option is chosen in 2.3.1.2. Range: 3.6 mA to 22.6 mAOptionsManual*LevelSpaceDistanceVolumeNotes:• The mA Output Function is set independently from the setting in Operation. Set Operation first and then mA Output Function. (Operation resets mA Output Function to the same value.)• The mA Output Function controls the primary value and the loop current for the STIRANS LR250. Use caution when changing the mA Output function when connected to a HART network.• The mA Output Function also affects the secondary, tertiary and quaternary variables in a HART network.• mA Output Function must be set to Manual before you can modify the mA Output Value (2.3.1.1). Remember to restore your previous setting after using mA Output Function.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 79mmmmmParameters2.3.1.3. 4 mA SetpointSets the process level corresponding to the 4 mA value. 4 mA always defaults to 0, and mA Output Function determines whether this is a Level, Space, Distance, or Volume measurement. Level and Space are measured as a percentage of the difference between High Calibration Point and Low Calibration Point. Distance is measured as a percentage of the Low Calibration Point.Enter the reading that is to correspond to a 4 mA output. Units are defined in Sensor units for Level, Space, or Distance. Units are unspecified for Volume.2.3.1.4. 20 mA SetpointSets the process level corresponding to the 20 mA value. 20 mA always defaults to 100%, and mA Output Function determines whether this is a Level, Space, or Distance measurement. Level and Space are measured as a percentage of the difference between High Calibration Point and Low Calibration Point: Distance is measured as a percentage of Low Calibration Point.Enter the reading that is to correspond to a 20 mA output. Units are defined in Sensor units for Level, Space, or Distance. Units are unspecified for Volume.ValuesRange: –99999 to 99999. Default: 0.000 m (set to value corresponding to 0% as defined by mA Output Function)Related Parameters mA Output FunctionValuesRange: –99999 to 99999. Default: 19.56 m (set to value corresonding to 100% as defined by mA Output Function)Related Parameters mA Output FunctionLevel Space DistanceDistanceSpaceLevel20 mA100%0%4 mAHigh CalibrationPoint4 mA0%100% 20 mA4 mA0%100% 20 mASensorreferencepointLow CalibrationPoint
Page 80 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParameters2.3.1.5. Minimum mA limitPrevents the mA output from dropping below this minimum level for a measurement value. This does not restrict the Failsafe or manual settings..2.3.1.6. Maximum mA limitPrevents the mA output from rising above this maximum level for a measurement value. This does not restrict the Failsafe or manual settings.2.3.1.7. 4 mA Output TrimCalibrates the 4 mA output. The mA output of the device is pre-calibrated; however, 4 mA Output Trim can be used to trim remote displays or inputs.Steps: 1. Set mA Output Function Manual.2. Set mA Output Value to 4 mA. 3. Attach a calibrated meter and check the output at the terminals; record the remote reading in mA.4. Enter this value in 4 mA Output Trim.5. Restore mA Output Function to previous setting.6. Confirm that the mA output is as expected.2.3.1.8. 20 mA Output TrimCalibrates the 20 mA output. The mA output of the device is pre-calibrated; however, 20 mA Output Trim can be used to trim remote displays or inputs.Steps: 1. Set mA Output Function to Manual.2. Set mA Output Value to 4 mA. 3. Attach a calibrated meter and check the output at the terminals; record the remote reading in mA.4. Enter this value in 20 mA Output Trim.5. Restore mA Output Function to previous setting.6. Confirm that the mA output is as expected.Values Range: 3.8 to 20.5 (mA)Default: 3.8 (mA)Values Range: 3.8 to 20.5 (mA)Default: 20.5 (mA)Values Range: 2.0 to 6.0 (mA)Related parameters 20 mA Output TrimValues Range: 18.0 to 24.0 (mA)Related parameters 4 mA Output Trim
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 81mmmmmParameters2.4. Failsafe2.4.1. Failsafe TimersSets the time to elapse in minutes since the last valid reading, before Failsafe State activates2.4.2. Failsafe Material LevelThe material level to be reported when the Failsafe Timer expires.2.4.3. Failsafe LevelDefines a user-defined level to report when the Failsafe timer expires.. 3. Diagnostics3.1. Echo ProfileAllows you to request the current echo profile either via the handheld programmer, or via SIMATIC PDM.To request a profile via SIMATIC PDM: a. Open the menu View – Echo Profile. b. If desired, press Save. c. To view the saved profile, open the menu View – Show Echo Profile.To request a profile via the handheld programmer: a. In PROGRAM mode, navigate to LEVEL METER > DIAGNOSTICS > ECHO PROFILE.b. Press Right ARROW to request a profile.Values Range: 0.00 to720 min.Default: 100.0Note: The last valid reading is maintained until the Failsafe timer expires. After the timer expires, the reading is set based on Failsafe Material Level (next page).Values HI: Use Maximum mA Limit as material levelLO: Use Minimum mA Limit as material level *HOLD: Level remains at last readingVALUE: User-selected value (defined in Failsafe Level below)Values Range: 3.6 mA to 22.6 mADefault: 22.6 mANote: Failsafe Material Level must be set to VALUE to use this value.DIAGNOSTICSX3.2FAULT RESETMEAS. VALUESREMAIN DEV. LIFEECHO PROFILEECHO PROFILE
Page 82 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParametersc. In the Profile screen, press Up ARROW to select the Transmit icon, and Right ARROW to update the profile. d. Press Down ARROW to select the Exit icon, then Right ARROW to return to previous menu.3.14. Measured Values3.14.1. Current Internal TemperatureRead Only. Displays (in degrees C) the current temperature on the circuit board recorded by the internal electronics. In SIMATIC PDM, open the menu Diagnostics, and select the tab Measured Values panel.3.14.2. Maximum Internal TemperatureRead Only. Displays (in degrees C) the maximum temperature recorded by the internal electronics. The high and low values are maintained over a power cycle. In SIMATIC PDM, open the menu Diagnostics, and select the tab Measured Values panel.3.14.3. Minimum Internal TemperatureRead Only. Displays (in degrees C) the minimum temperature recorded by the internal electronics. The high and low values are maintained over a power cycle. 3.15. Remaining Device LifetimeUse the Remaining Device/Sensor Lifetime parameters to set up schedules for calibration and maintenance. The device will track itself based on operating hours, instead of a calendar-based schedule, and will monitor its predicted lifetime.The maintenance warnings and alarms 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.The device monitors the predicted lifetime of the device.3.15.1. Total Device Operating TimeRead only. Displays the amount of time the device has been operating. 3.15.2. Remaining Device LifetimeRead only. The sum of Total Expected Device Life less Total Device Operating Time.Note: Performing a Factory Reset will reset all the Maintenance Schedule parameters to their factory defaults.transmit iconexit icon
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 83mmmmmParameters3.15.3. Maintenance Required LimitAllows you to set the time period after which an alert will signal that maintenance is required.In SIMATIC PDM, open the menu Device – Maintenance, click on Remaining Device Lifetime. a) Enable Alert Activation (see 3.15.5 Maintenance Alert Activation for more detail).b) Modify values as required. Click Write to accept the changes.3.15.4. Maintenance Demanded LimitAllows you to set the time period after which an alert will signal that maintenance is demanded.In SIMATIC PDM, open the menu Device – Maintenance, click on Remaining Device Lifetime. a) Enable Alert Activation (see 3.15.5 Maintenance Alert Activation for more detail).b) Modify values as required. Click Write to accept the changes.3.15.5. Maintenance Alert ActivationSelect limits to be activated.To enable or disable Maintenance Alert Activation via PDM:a) Open the menu Device – Maintenance, click on Remaining Device Lifetime. b) Select either or both of Enable Maintenance Required Alert and Enable Maintenance Demanded Alert. Click Write to accept the changes.Values Range: 0 to 20 yearsDefault: 0.164 yearsValues Range: 0 to 20 yearsDefault: 0.019 yearsValuesWarning Limit 1 (Mainteance Required Limit)Warning Limit 2 (Maintenance Demanded Limit)*OFF
Page 84 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParameters3.15.6. Total Expected Device LifeThe device tries to predict its overall lifetime. The factory default can be reset by the user.To modify the value via PDM, open the menu Device – Maintenance, click on Remaining Device Lifetime, enter the desired value then click Write to accept it.3.15.7. Maintenance StatusRead only. Displays the status of the Maintenance Alerts3.15.8. Acknowledge StatusRead only. Displays the status of the Maintenance Alerts that have been acknowledged.3.15.9. Acknowledge Allows you to acknowledge either a Maintenance Required or a Maintenance Demanded alert.To acknowledge an alert via PDM: a) Open the menu View – Device Status and click on the tab Maintenance.b) In the Device Lifetime section, modify values as required. Click Write to accept the changes.3.16. Remaining Sensor LifetimeThe device monitors the predicted lifetime of the sensor (the components exposed to the vessel environment). 3.16.1. Total Sensor Operating TimeRead only. Displays the amount of time the sensor has been operating. 3.16.2. Remaining Sensor LifetimeRead only. The sum of Total Expected Device Life less Total Device Operating Time.Values Range: 0 to 20 yearsDefault: 10.07 yearsValues0 No maintenance alerts active1 Maintenance Required Alert active2 Maintenance Demanded Alert ActiveValues0 No maintenance alerts acknowledged1Maintenance Required Alert acknowledged2Maintenance Demanded Alert acknowledged
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 85mmmmmParameters3.16.3. Maintenance Required LimitAllows you to set the time period after which an alert will signal that maintenance is required.To modfify the value via PDM, open the menu Device – Maintenance and click on Remaining Device Lifetime.a) Enable Alert Activation (see 3.2.1. Maintenance Alert Activation for more detail).b) Modify values as required. Click Write to accept the changes.3.16.4. Maintenance Demanded LimitAllows you to set the time period after which an alert will signal that maintenance is demanded.To modfify the value via PDM, open the menu Device – Maintenance and click on Remaining Device Lifetime.a) Enable Alert Activation (see 3.2.1. Maintenance Alert Activation for more detail).b) Modify values as required. Click Write to accept the changes.3.16.5. Maintenance Alert ActivationSelect limits to be activated.To enable or disable Maintenance Alert Activation via PDM:a) Open the menu Device – Maintenance, and click on Remaining Device Lifetime. b) Select either or both of Enable Maintenance Required Alert and Enable Maintenance Demanded Alert. Click Write to accept the change.Values Range: 0 to 20 yearsDefault: 0.164 yearsValues Range: 0 to 20 yearsDefault: 0.019 yearsValuesWarning Limit 1 (Mainteance Required Limit)Warning Limit 2 (Maintenance Demanded Limit)*OFF
Page 86 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParameters3.16.6. Total Expected Sensor LifeThe device tries to predict its overall lifetime. The factory default can be reset by the user.To modify the value via PDM, open the menu Device – Maintenance, click on Remaining Sensor Lifetime, enter the desired value then click Write.3.16.7. Maintenance StatusRead only. Displays the status of the Maintenance AlertsTo modfify the value via PDM, open the menu Device – Maintenance and click on Remaining Device Lifetime.a) Enable Alert Activation (see 3.2.1. Maintenance Alert Activation for more detail).b) Modify values as required. Click Write to accept the changes.3.16.8. Acknowledge StatusRead only. Displays the status of the Maintenance Alerts that have been acknowledged.3.16.9. Acknowledge Allows you to acknowledge either a Maintenance Required or a Maintenance Demanded alert.To acknowledge an alert via PDM: a) Open the menu View – Device Status and click on the tab Maintenance.b) In the Device Lifetime section, modify values as required. Click Write to accept the changes.Values Range: 0 to 20 yearsDefault: 10.07 yearsValues0 No maintenance alerts active1 Maintenance Required Alert active2 Maintenance Demanded Alert ActiveValues0 No maintenance alerts acknowledged1Maintenance Required Alert acknowledged2Maintenance Demanded Alert acknowledged
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 87mmmmmParameters4. Service 4.1. Factory ResetResets all parameters to their factory settings, with the following exceptions:• the Lock and Unlock values are not reset. • The learned TVT curve is not lost. • In Edit Mode, only the Factory Default performs a Factory Reset. The Idle or Done setting returns you to the previous menu.To peform a factory reset via SIMATIC PDM, open the menu Device – Master Reset.4.2. Powered HoursDisplays the number of hours the unit has been powered up since manufacture.4.4. Power-on ResetsThe number of power cycles that have occurred since manufacture.4.7. Manufacture DateThe date of manufacture of the SITRANS LR250 (yy mm dd).4.8. Software RevisionCorresponds to the software or firmware that is embedded in the SITRANS LR250.4.9. Loader RevisionCorresponds to the software used to update the SITRANS LR250.4.11. Hardware RevisionCorresponds to the electronics hardware of the SITRANS LR250.4.12. Memory TestAllows verification of the RAM, EEPROM, and Flash Memory of the SITRANS LR250.Press any numeric key to activate the test. The reading will first display buSY, then the test result text.Note: Following a Master Reset, complete reprogramming is required.Options *Idle or Done (Return to previous menu)Factory Default (Factory Reset Performed)Values (Read only)PASS Memory test successfulIdLE No test in progressbuSY Test in progressFAIL Test failedFxxxx Memory address that failed memory test.
Page 88 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParameters4.17. Service IntervalAllows for scheduling of service inspections.4.17.1. Last Time ServicedRead only. Time elapsed since device was last serviced4.17.2. Maintenance Required LimitIf the time elapsed from last service is equal to or less than this limit, a Maintenance Required status is generated. 4.17.3. Maintenance Demanded LimitIf the time elapsed from last service is equal to or less than this limit, a Maintenance Demaded status is generated.4.17.4. Alert ActivationSelect limits to be activated.4.17.5. Service IntervalSet time between scheduled service inspections4.17.6. Maintenance StatusRead only. Displays the status of the Maintenance AlertsValues Range: 0 to 20 yearsDefault: 0.164 yearsValues Range: 0 to 20 yearsDefault: 0.019 yearsValues* Timer offOn - no limitsOn - limits 1 and 2On - limit 2Values Range: 0 to 20 yearsDefault: 1.0 yearsValues0 No maintenance alerts active1 Maintenance Required Alert active2 Maintenance Demanded Alert Active
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 89mmmmmParameters4.17.7. Acknowledge StatusRead only. Displays the status of the Maintenance Alerts that have been acknowledged.4.17.8. AcknowledgeAllows you to acknowledge either a Maintenance Required or a Maintenance Demanded alert.4.18. Calibration IntervalAllows for scheduling of calibrations.4.18.1. Last Time CalibratedRead only. Time elapsed since device was last calibrated.4.18.2. Maintenance Required LimitIf the time elapsed from last calibration is equal to or less than this limit, a Maintenance Required status is generated. 4.18.3. Maintenance Demanded LimitIf the time elapsed from last calibration is equal to or less than this limit, a Maintenance Demaded status is generated.4.18.4. Alert ActivationSelect limits to be activated.Values0 No maintenance alerts acknowledged1Maintenance Required Alert acknowledged2Maintenance Demanded Alert acknowledgedValues Range: 0 to 20 yearsDefault: 0.164 yearsValues Range: 0 to 20 yearsDefault: 0.019 yearsValues* Timer offOn - no limitsOn - limits 1 and 2On - limit 2
Page 90 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParameters4.18.5. Total Calibration IntervalSet time between scheduled calibrations.4.18.6. Maintenance StatusRead only. Displays the status of the Maintenance Alerts4.18.7. Acknowledge StatusRead only. Displays the status of the Maintenance Alerts that have been acknowledged.4.18.8. AcknowledgeAllows you to acknowledge either a Maintenance Required or a Maintenance Demanded alert.5. 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.5.2. Communication ControlEnables the read/write access to parameters via remote communicationsValues Range: 0 to 20 yearsDefault: 1.0 yearsValues0 No maintenance alerts active1 Maintenance Required Alert active2 Maintenance Demanded Alert ActiveValues0 No maintenance alerts acknowledged1Maintenance Required Alert acknowledged2Maintenance Demanded Alert acknowledgedValues Range: 0 to 15Default: 0OptionsRead Only*Read WriteRestricted
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 91mmmmmParameters6. Security6.1. LockPrevents any changes to parameters via the hand-held programmer. Note: This lock only applies only to the hand-held programmer: it does not lock through communcations. A remote master can change configuration if 5.2 Communication Control is set to allow this.To secure the programming lock: Key in any value other than the unlock value. Parameters are now locked and cannot be changed.To unlock the device and enable hand-held programming changes: Key in the unlock value. Parameters are now unlocked and may be changed.6.2. Unlock valueStores the value to enter in Lock (6.1) to unlock programming. If Lock is on, Unlock Value will not display the unlocked valueNotes: • Default setting for 6.1 (Lock) is Unlocked. • After a new value is stored in Unlock Value (6.2), that value will be recalled after a Factory Reset.• Consult your Siemens Milltronics representative if you have forgotten the unlock value.7. LanguageSelects the language to be used on the LCD.Note: Do not lose this number value.Hand-held programmer Values1954 (unlock value) Off (enables local programming)any other value On (disables local programming)Hand-held programmer ValuesRange 1 to 9999Factory Setting 1954---- Display when Lock is onOptions *EnglishGermanFrenchSpanish
Page 92 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmParameters
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 93mmmmmA: Parameter ListAppendix A: Alphabetical Parameter ListParameter Name/Parameter Number/Page Number 20 mA Output Trim (2.3.1.8.) on page 80 20 mA Setpoint (2.3.1.4.) on page 79 4 mA Output Trim (2.3.1.7.) on page 80 4 mA Setpoint (2.3.1.3.) on page 79 Algorithm (2.2.4.1.1.) on page 71 Antenna (2.2.1.1.) on pag e 63 Auto False Echo Suppression (2.2.5.6.) on page 74 Communication Control (5.2.) on page 90 Confidence (2.2.4.5.1.) on page 73 Current Internal Temperature (3.14.1.) on page 82 Damping Filter (2.2.4.3.3.) on page 73 Dimension A (2.2.3.2.) on page 69 Dimension L (2.2.3.3.) on page 69 Distance Measurement (2.2.8.4.) on page 77 Echo Lock (2.2.4.2.1.) on page 72 Echo Threshold (2.2.4.1.3.) on page 71 Empty rate (2.2.7.3.) on page 77 Factory Reset (4.1.) on page 87 Failsafe Level (2.4.3.) on page 81 Failsafe Material Level (2.4.2.) on page 81 Failsafe Timers (2.4.1.) on page 81 Far Range (2.2.1.13.) on page 66 Fill Rate (2.2.7.2.) on page 76 High Calibration Pt. (2.2.1.7.) on page 66 Language (7.) on page 91 Level Offset (2 .2.1.15. ) on pag e 67 Lock (6.1.) on page 91 Low Calibration Pt. (2.2.1.6.) on page 65 mA Output Function (2.3.1.2.) on page 78 mA Output Value (2. 3.1.1. ) on p age 78
Page 94 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmA: Parameter List Material Measurement (2.2.8.2.) on page 77 Maximum mA limit (2.3.1.6.) on page 80 Maximum Volume (2.2.3.1.) on page 69 Memory Test (4.12.) on page 87 Minimum mA limit (2.3.1.5.) on page 80 Near Range (2.2.1.12.) on page 66 Noise (2.2.4.5.) on page 73 Operation (2.2.1.5.) on page 65 Position (2.2.4.1.2.) on page 71 Powered Hours (4.2.) on page 87 Power-on Resets (4.4.) on page 87 Propagation Factor (2 . 2.1.14. ) on p ag e 66 Range (Auto Suppression Range) (2.2.5.7.) on page 75 Reading Measurement (2.2.8.1.) on page 77 Response Rate (2.2.7.1.) on page 76 Sampling up (2.2.4.2.4.) on page 72/ Sampling down1 (2.2.4.2.5.) on page 72 Sensor Units (2.2.1.4.) on page 64 Software Revision (4.8.) on page 87 Space Measurement (2.2.8.3.) on page 77 Strength (2.2.4.5.2.) on page 73 TVT Hover Level (2.2.5.1.) on page 74 Unlock value (6.2.) on page 91 Vessel Shape (2.2.2.1.) on page 67 Volume Breakpoints (2.2.3.) on page 69 Volume Breakpoints (2.2.3.) on page 69 Volume Measurement (2.2.8.5.) on page 77 Window1 (2.2.4.2.6.) on page 72Parameter Name/Parameter Number/Page Number
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 95mmmmmB: Programming ChartAppendix B: Programming ChartParameter Number and Name Value 20 mA Output Trim (2.3.1.8.) 20 mA Setpoint (2.3.1.4.) 4 mA Output Trim (2.3.1.7.) 4 mA Setpoint (2.3.1.3.) Algorithm (2 .2.4 .1.1.) Antenna (2 . 2.1.1. ) Auto False Echo Suppression (2.2.5.6.) Communication Control (5.2.) Confidence (2.2.4.5.1.) Current Internal Temperature (3.14.1.) Damping Filter (2.2.4.3.3.) Dimension L (2.2.3.3.) Distance Measurement (2.2.8.4.) Echo Lock (2.2.4.2.1.) Echo Threshold (2.2.4.1.3.) Empty rate (2.2.7.3.) Factory Reset (4.1.) Failsafe Level (2.4.3.) Failsafe Material Level (2.4.2.) Failsafe Timers (2.4.1.) Far Range (2 . 2.1.13. ) Fill Rate (2.2.7.2.) High Calibration Pt. (2.2.1.7.) Language (7.) Level Offset (2.2.1.15.) Lock (6.1.) Low Calibration Pt. (2.2.1.6.) mA Output Function (2.3.1.2.) mA Output Value (2.3.1.1.) Material Measurement (2.2.8.2.) Maximum mA limit (2.3.1.6.) Maximum Volume (2.2.3.1.)
Page 96 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmB: Programming Chart Memory Test (4.12.) Minimum mA limit (2.3.1.5.) Near Range (2.2.1.12.) Noise (2.2.4.5.) Operation (2.2.1.5.) Position (2.2.4.1.2.) Powered Hours (4.2.) Power-on Resets (4.4.) Propagation Factor (2.2.1.14.) Range (Auto Suppression Range) (2.2.5.7.) Reading Measurement (2.2.8.1.) Response Rate (2.2.7.1.) Sampling up (2.2.4.2.4.)/ Sampling down1 (2.2.4.2.5.) Sensor Units (2.2.1.4.) Software Revision (4.8.) Space Measurement (2.2.8.3.) Strength (2.2.4.5.2.) TVT Hover Level (2.2.5.1.) Unlock value (6.2.) Vessel Shape (2.2.2.1.) Volume Breakpoints (2.2.3.) Volume Measurement (2.2.8.5.) Window1 (2.2.4.2.6.)Parameter Number and Name (Continued) Value
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 97mmmmmC: TroubleshootingAppendix C: TroubleshootingCommunication TroubleshootingGenerally:1. Check the following:• There is power at the instrument• The LCD shows the relevant data• The device can be programmed using the hand programmer2. Verify that the wiring connections are correct.3. If you continue to experience problems, go to our website at: . www.siemens.com/processautomation, and check the FAQs for SITRANS LR250, or contact your local Siemens Milltronics representative.Specifically:1. If you try to set a SITRANS LR250 parameter via remote communications, but the parameter remains unchanged:• Some parameters can only be changed when the device is not scanning. Try putting the device in PROGRAM mode using the operating mode function.• Try setting the parameter from the keypad. (First make sure that the lock parameter [6.1] is set to the unlock value.)• The communications control parameter 5.2 must be set to 1 to allow you to write parameters to SITRANS LR250.2. If you see unanticipated displays, for example:• PROGRAM mode displayed instead of Measurement mode• the wrong parameter displayed in response to a command• a parameter displayed in response to no commandmake sure no infrared-capable device is close to SITRANS LR250. Any device with infrared capabilities (laptops, cell phones, PDAs) can cause interference which simulates a command to the SITRANS LR250, potentially causing it to switch modes or to change a parameter.3. If the operation is erratic, make sure the Hand Programmer is not being used at the same time as SIMATIC PDM.
Page 98 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmC: TroubleshootingGeneral Fault CodesFault CodesNotes: • Some faults cause the device to go to Failsafe mode (Fault 52). These are indicated with an asterisk (*).Fault Codes Code Meaning Corrective Action S:0 * The device was unable to get a measurement within the Failsafe Timer period. Possible causes: faulty installation, antenna buildup, foaming/other adverse process conditions, invalid calibration range.Ensure installation details are correct. Ensure no antenna buildup. Adjust process conditions to minimize foam or other adverse conditions. Correct range calibration. If fault persists, contact your local Siemens representative.S:2 *The device is operating in a low power condition that is outside its operating range. As a result, a valid measurement has not been taken for the failsafe timer period, and the device will be put into failsafe mode.Correct the power supply (resistance or voltage).S:3 Device is nearing its lifetime limit according to the value set in Maintenance Required Limit.Replacement is recommended.S: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.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 99mmmmmC: TroubleshootingS: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:11 Internal temperature sensor failure. Repair required: contact your local Siemens representative.S:12 Internal temperature of device has exceeded specifications: it is operating outside its temperature range.Relocate device and/or lower process temperature enough to cool device. Inspect for heat-related damage and contact your local Siemens representative if repair is required. S:17 Calibration interval as defined in Maintenance Required Limit has expired.Perform calibration.S:18 Calibration interval as defined in Maintenance Demanded Limit has expired.Perform calibration.S:28 * Internal device failure caused by a RAM memory error. Repair required: contact your local Siemens representative.S:29 *EEPROM damaged. Repair required: contact your local Siemens representative.S:31 * Flash error. Repair required: contact your local Siemens representative.S:33 *Factory calibration for the internal temperature sensor has been lost.Repair required: contact your local Siemens representative.S:34 * Factory calibration for the device has been lost.Repair required: contact your local Siemens representative.S:35 *Factory calibration for the device has been lost.Repair required: contact your local Siemens representative.S:36 * Unable to start microwave module. Reset power. If error persists, contact your local Siemens representative.Fault Codes (cont’d)Code Meaning Corrective Action
Page 100 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmC: TroubleshootingS:37 *Measurement hardware problem. Reset power. If error persists, contact your local Siemens representative.S:38 * Failure in the device electronics. Reset 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 Siemens representative.S:44 * Factory calibration for the echo slope has been lost.Repair required: contact your local Siemens representative.S:45 *No valid boot program detected: firmware corrupt.Repair required: contact your local Siemens 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 Calibration Point and Low Calibration Point is not less than zero; check the breakpoints (only required if 2.2.3. Volume Breakpoints is not set to 0).S:49 *EEPROM corrupt. Repair required: contact your local Siemens representative.S:50 * EEPROM corrupt. Repair required: contact your local Siemens representative.S:51 *EEPROM corrupt. Repair required: contact your local Siemens representative.S:52 Failsafe is activated. Possible causes: 1) hardware failure; 2) memory failure; 3)Fault 48; 4) failsafe timer expired– possible causes: faulty installation, antenna buildup, foaming/other adverse process conditions, invalid calibration range.For 3) and 4) 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.Fault Codes (cont’d)Code Meaning Corrective Action
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 101mmmmmC: TroubleshootingOperation TroubleshootingOperating symptoms, probable causes, and resolutions.Symptom Cause ActionDisplay flashes LOE and status symbol showslevel or target is out of range • check specifications• check 2.2.1.6. Low Calibration Pt.• increase 2.2.4.5.1. ConfidenceDisplay flashes LOE and status symbol showsmaterial build-up on antenna • clean the antenna• re-locate SITRANS LR250Display flashes LOE and status symbol showslocation or aiming:• poor installation• flange not level• check to ensure nozzle is vertical•use2.2.5.6. Auto False Echo Suppression and check 2.2.5.7. Range (Auto Suppression Range) to ensure nozzle protrudes from end of nozzle.Display flashes LOE and status symbol showsantenna malfunction:• temperature too high• physical damage• excessive foam• multiple echoes• check 3.14.1. Current Internal Temperature • use foam deflector or stilling well•relocate• use a defoamer• set 2.2.4.1.1. Algorithm to F (First echo)
Page 102 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmC: TroubleshootingReading does not change, but the level doesSITRANS LR250 processing wrong echo, i.e. vessel wall, or structural member• re-locate SITRANS LR250• check nozzle for internal burrs or welds• rotate instrument 90°•use 2.2.5.6. Auto False Echo Suppression and 2.2.5.7. Range (Auto Suppression Range)Measurement is consistently off by a constant amount• setting for 2.2.1.6. Low Calibration Pt. not correct• setting for 2.2.1.15. Level Offset not correct• check distance from flange face to 2.2.1.6. Low Calibration Pt.• check 2.2.1.15. Level Offset or device tagScreen 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 to2.2.4.5.1. Confidence•use 2.2.5.6. Auto False Echo Suppression and 2.2.5.7. Range (Auto Suppression Range) • use foam deflector or stilling wellliquid surface vortexed • decrease 2.2.7.1. Response Rate • relocate instrument to side pipe• increase confidence threshold in 2.2.4.1.3. Echo Thresholdmaterial filling • re-locate SITRANS LR250Reading response slow2.2.7.1. Response Rate setting incorrect• increase measurement response if possibleSymptom Cause Action (cont’d)
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 103mmmmmC: TroubleshootingReads correctly but occasionally 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 2.2.5.6. Auto False Echo Suppression and 2.2.5.7. Range (Auto Suppression Range)Level reading lower than material level• material is within near blanking zone• vessel near empty and low εr material • multiple echoes processed• decrease 2.2.1.12. Near Range (minimum value depends on antenna type)• raise SITRANS LR250•ensure2.2.4.1.1. Algorithm is set to F (First echo)• nozzle too narrow for length • see Rod Extension Requirements on page 114.Symptom Cause Action (cont’d)
Page 104 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmD: MaintenanceAppendix D: 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.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 105mmmmmE: Technical ReferenceAppendix E: Technical ReferencePrinciples of Operation SITRANS LR250 is a sophisticated radar instrument that uses advanced microwave pulse technology1 to provide non-contacting continuous level measurement in liquids or slurries. 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). The echo is detected by a receiver, and the transit time is used to calculate level. 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 component generates a radar signal (26 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 reference point on the instrument. This distance is used as a basis for the display of material level and mA output.Echo ProcessingThe three echo processing parameters, Response Rate, Near Range, and Position, are set to default values shown in the table below. Further information can be found in Parameter Reference on the pages shown.The device characterizes all echoes that rise above the TVT (Time Varying Threshold) as potential good echoes. Each peak is assigned a rating based on its strength, area, height above the TVT, amongst other characteristics. The true echo is selected based on the algorithm selected in 2.2.4.1. Echo select. Options are Largest Echo, best of Largest and First, or First. 1. The microwave output level is significantly less than that emitted from cellular phones.Echo Processing Parameters Default values Description page 2.2.1.3. Response RateFast measurement response to level change 64 2.2.1.12. Near Range0 user-defined blanking 662.2.4.1.2. PositionHybrid Defines where on the echo the distance measurement is determined.71
Page 106 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmE: Technical ReferenceThe echo location algorithm calculates the precise time of flight of that echo, and calculates the range using the calibrated propagation velocity (adjusted using a propagation factor, if necessary).Measurement ResponseThe measurement response (response rate) limits the maximum rate at which the display and output respond to changes in the measurement. Once the real process fill/empty rate (m/s) is established, a response rate can be selected that is slightly higher than the application rate. The response rate automatically adjusts the filters that affect the output response rate. There are three preset options: slow, medium, and fast.The measurement response limits the maximum rate at which the display and analog output respond to changes in measurement. Response Rate 2.2.7.1 should be set to a measurement response just faster than the maximum filling or emptying rate (whichever is greater).When the echoes are received, the relevant echo algorithm (2.2.4.1.1) is applied to determine the true material echo.Typical Receiver Signal2.2.7.1. Response Rate2.2.7.2. Fill Rate/2.2.7.3. Empty rate2.2.4.2.1. Echo Lock2.4.1. Failsafe Timers (time in minutes)Typical Update TimeSlow * 0.1 m/min 2 100 ###Medium 1 m/min 2 10 ###Fast 10 m/min 2 1 1 sec.2.2.1.11Near RangeEmpty Level End of TransmitRange Extension (2. 2 .1.12) a s %Difference between High Calibration Point and Low Calibration Point
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 107mmmmmE: Technical ReferenceEcho LockWhen the echoes are received, the relevant echo algorithm is applied to determine the true material echo. If the selected echo is within the window, the window is then centered about the echo. Otherwise the window widens with each successive shot until the selected echo is within the window, which then returns to its normal width.Echo Lock selects the measurement verification process:• When Echo Lock is Off, SITRANS LR 250 responds immediately to a new measurement (within the restrictions set by the Maximum Fill / Empty Rate). However, measurement reliability is affected. • When Maximum Verification or Material Agitator is selected, a new measurement outside the Echo Lock Window must meet the sampling criteria. • When Total Lock is selected, Echo Lock Window is pre-set to 0, and the window is automatically calculated after each measurement. Loss 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. If the LOE condition persists beyond the time limit set in 2.4.1. Failsafe Timers the LCD displays the Service Required icon, a wrench accompanied by three dots and the text region displays the fault code S: 0 and the text LOE.Fail-safe ModeFail-safe Timers2.4.1. Failsafe Timers determines the time to elapse after the last valid reading before a Fail-safe state is activated. 2.4.2. Failsafe Material Level determines the level to be reported when the Fail-safe timer expires. 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 level.Fail-safe valueWhen the 2.4.1. Failsafe Timers expires, the material level to be reported is determined by 2.4.2. Failsafe Material Level.Values0Off1Maximum Verification2*Material Agitator3Tot al LockFail-safe Material LevelHI Use Maximum mA Limit as material levelLO Use Minimum mA Limit as material level HOLD Level remains at last readingVALUE User-selected value
Page 108 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmE: Technical ReferenceFar Range (Range Extension)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 the range extension to 30% or 40% can provide stable empty vessel readings. False-Echo SuppressionFalse echoes can appear during the receive cycle. They are often created by internal impediments like a ladder rung, and are usually indicated by an incorrect high level reading. Near Range (Blanking)2.2.1.12. Near Range programs SITRANS LR250 to ignore the zone in front of the antenna. The default blanking distance is 0.50 mm from end of horn antenna.. Near Range allows you to increase the blanking value from its factory setting. But 2.2.5.6. Auto False Echo Suppression is generally recommended in preference to extending the blanking distance from factory values.Auto False-Echo SuppressionThe TVT adjustment parameters allow you to set a TVT (Time Varying Threshold) curve, so that SITRANS LR250 will ignore false echoes.The default TVT curve hovers above the echo profile, and effectively screens out small false echoes. But if an obstruction is causing a large echo before the material level echo, that echo will rise above the default TVT curve. You can use Auto False-Echo Suppression to filter it out. If possible, rotate the instrument before using Auto False-Echo Suppression, to lower the amplitude of false echoes. When you set 2.2.5.6 to Learn, the instrument learns the echo profile at that moment1. Then it uses the learned profile instead of the default TVT curve, for the distance set in 2.2.5.7. The learned profile (Learned TVT curve) follows the echo profile, so that no large false echoes rise above the learned TVT curve. From the end of the Auto False-Echo Suppression Distance, the default TVT curve is used. The material level echo rises above this, and is selected as the true echo.For examples, see Display before Auto False Echo Suppression on page 109 andExample after Auto False Echo Suppression on page 109.1. Set 2.2.5.6 to ’Learn’ when the material level is substantially lower than process full level (ideally when the tank is empty or almost empty).
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 109mmmmmE: Technical ReferenceDisplay before Auto False Echo Suppression Default TVTTVTHover LevelLevel (db)EchoMarkerWindowExample after Auto False Echo Suppression learned TVT curveliquid levelfalse echoLevel (db)false echo
Page 110 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmE: Technical ReferencemA OutputThe mA output is proportional to the level, in the range 4 to 20 mA. Generally, the output is set so that the output for 0% is 4 mA, and the output for 100% is 20 mA. 0 and 100% are percentages of the full-scale reading (m, cm, mm, ft, in). When SITRANS LR250 is put into PROGRAM mode it stops responding to the process. It stores the most recent measurement, and holds the associated readings and mA signal output. The instrument reverts to the parameter last addressed during the previous program session.When the instrument 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 the response rate (2.2.7.1).If SITRANS LR250 is left in PROGRAM mode for 10 minutes without input, it automatically reverts to Measurement mode.Level Space DistanceDistanceSpaceLevel20 mA100%0%4 mAHigh CalibrationPoint4 mA0%100% 20 mA4 mA0%100% 20 mASensorreferencepointLow CalibrationPoint
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 111mmmmmE: Technical ReferenceMaximum Process Temperature Chart.Where the chart does not apply, please use your own judgement regarding the use of SITRANS LR250. Parameter 3.14.1 is required to monitor the Internal Temperature. It gives you an excellent indication of how reliably the product will perform thermally when installed on your process vessel.3.14.1 also allows you to decide whether or not attention should be focussed on redesigning the installation. For example, if the internal temperature exceeds the maximum allowable limit, a sun shield or a longer nozzle may be required. Engineering will use this temperature reading (3.14.1) to gauge the extent of change required to the installation in order to provide a reliable thermal-operating zone for the SITRANS LR250.Note: The chart below is for guidance only: WARNING: Internal temperature must not exceed 80 °C (176 °F). Maximum Flange and Process Temperatures versus Allowable Ambient for Polypropylene Rod or Flange Adapter versions of SITRANS LR250flange temperatureprocess temperatureAmbient Temperature (oC)Process Flange Surface Temperature (oC)polypropylene rod temperature (no flange)Graphic to be revised if required.• The chart does not represent every possible process connection arrangement. For example, it will NOT apply if you are mounting SITRANS LR250 on a nozzle greater than 8” nominal, or directly on a metallic vessel surface.• The chart does not take into consideration heating from direct sunshine exposure.ambient temperatureprocess temperatureinternal enclosure temperature
Page 112 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmE: Technical ReferenceProcess Pressure/Temperature derating curves1Notes: • These configurations are subject to revision: other options may be added.• Process configuration numbers are not final.• 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 LR 250 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.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.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.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 113mmmmmE: Technical ReferenceHorn Antenna or Wave Guide – ANSI Hole Pattern, 150#1Horn Antenna or Wave Guide DN Hole Pattern, PN1621. Customer to provide adequate bolting and flat-faced gasket to retain vessel pressure and pro-vide sufficient sealing.WARNING: Never attempt to loosen, remove or disassemble process connection or instrument housing while vessel contents are under pressure.2. Customer to provide adequate bolting and flat-faced gasket to retain vessel pressure and pro-vide sufficient sealing.Process Connection Series:•51242 to 51???, and 512xx to 512xx, with 25546 and 255xx series flange.•Ensure your instrument has the process identification tag showing one of this series, and 25546 or 255xx stamped on flange.•Reference drawing number is shown on the process device tag. You can find this drawing on our website: www.siemens.com/processautomation on the LR 250 product page, under Process Connection Specifications.process temperature (°C)pressure (bar, gauge)4”6”3”8”502.04.06.08.010.012.014.016.018.00-50 100 150 200Process Connection Series:• 51242 to ????, and 512xx to 51512xx with 25547 and 255xx series flange.• Ensure your instrument has the process identification tag showing one of this series, and 25547 or 255xx stamped on flange.• Reference drawing number is shown on the process device tag. You can find this drawing on our website: www.siemens.com/processautomation on the LR 250 product page, under Process Connection Specifications.process temperature (°C)100 mm150 mm 200 mm80 mmpressure (bar, gauge)DETAILS TO BE UPDATED
Page 114 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmAppendix F: Loop PowerAppendix F: Loop powerTypical Connection DrawingAllowable operating area of SITRANS LR250Curve 1 (General Purpose, Intrinsically Safe, Non-incendive)Note: 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 supplyLoop Voltage versus Loop ResistancePower Supply Requirements0100200300400500600700800900100010.00 15.00 20.00 25.00 30.00Loop Voltage-VLLoop Resistance - RLRL=44.6*VL - 493.4RL=272.7*VL - 4554.1(16.7v, 0 ohms)(17.8v, 300 ohms)(30.0v,845 ohms)ALLOWABLE OPERATING AREA
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 115mmmmmAppendix F: Loop PowerCurve 2 (Flameproof, Increased Safety, Explosion-proof)Startup CurveLoop Voltage versus Loop Resistance
Page 116 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmG: Special ApplicationsAppendix G: Special ApplicationsThis more complex SITRANS LR250 application example can be used for setup references. Application Example: StillpipeThis is used for products with an εr of less than 3, or if extremely turbulent or vortex conditions exist. This mounting arrangement can also be used to provide optimum signal conditions on foaming materials.This 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: •For εr < 3, the lower 400 mm of vessel level may not be measurable.•2.2.1.12. Near Range (Blanking) will be set at the factory. Check the process device tag for specific values.• Suitable pipe diameters are 50 mm (2”) to 100 mm (4”): See the chart on page 108 for typical 2.2.1.14. Propagation Factor values.Parameter Enter2.2.1.5. Operation1= level2.2.7.1. Response Rate2= 1 m/minute2.2.1.4. Sensor Units1= meters2.2.1.6. Low Calibration Pt.5= 5 m2.2.1.7. High Calibration Pt.4.5 = 4.5 m2.2.1.14. Propagation Factor11. See under 2.2.1.14. Propagation Factor on page 66 for atable showing suggested val-ues.0.998 = 100 mm pipe I.D.2.2.5.7. Range (Auto Sup-pression Range)distance to material – 0.42 m2.2.5.6. Auto False Echo Suppression2 enable false-echo suppression• The reference point of SITRANS LR250 is 5 m (16.5 ft) from the vessel bottom. • Low Calibration Pt. is 0 m/ft (bottom of tank).• High Calibration Pt. is 4.5 m (14.74 ft) from the bottom. • The stillpipe inside diameter is 100 mm (4"). • The maximum rate of filling or emptying is about 0.1 m (4")/min. vent slots5 m P0064.5 mP007
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 117mmmmmH: HART CommunicationsAppendix H: 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 Rev 3 can be configured over the HART network using either the HART Communicator 3751 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 DD for SITRANS LR250 was written with SIMATIC PDM in mind and has been extensively tested with this software.For more information, see Operating SITRANS LR250 via SIMATIC PDM on page 52.HART Device Description (DD) In order to configure a HART device, the configurator must have the HART Device Description for the instrument in question. HART DDs are controlled by the HART Communication Foundation. Please check with the HART Communication Foundation for the availability of the HART DD for SITRANS LR250. Older versions of the library will have to be updated in order to use all the features of SITRANS LR250.1. Versions of SITRANS LR250 earlier than Rev. 3 can be configured using the HART Communicator 275.
Page 118 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmH: HART CommunicationsHART Communicator 375 Chart 1Notes: • HART Communicator 375 is supported by SITRANS LR250 HART Rev. 3.03. The menu structure is aligned with the menu structure of SIMATIC PDM.1. PV2. Level3. % Range4. AO5. Device Setup6. Refresh1. Master Reset2. Quick Setup3. Display4. Diagnostics5. PV Exchange6. Device Data7. Rate8. Review1. Material2. Space3. Distance4. Volume5. Error Signal1. Wear2. Status3. Self Test4. Range Calibration5. Trim Analog Output6. Simulate AO1. Read AnalogOut2. Select AnalogOut1. Run Time2. Number3. Max Temp4. Int TempOn Line Device SetupDisplayWearDiagnosticsPV ExchangeDevice DataRange Calibration1. Units2. Empty3. Span4. Language5. Operation6. Response7. SensorQuick Setup1. Max Fill2. Max EmptyRate1. Lock2. Operation3. Response4. Sensor5. Units6. EmptyReview1. Sensor Status1. Electronics Status2. Software Status3. Application StatusStatus1. Self TestSelf Test1. Offset2. Prop Factor1. D/A Trim2. Scaled D/ATrim Analog Output1. Units2. Basic Setup3. Detailed Setup4. Output Param5. Device Information6. HART InformationBasic Setup (See Chart 2)Detailed Setup (See Chart 3)Output Parameter (See Chart 4)Device information1. Tag2. Descriptor3. Message4. Final Asmbly Num5. Last Config6. Manufacturer DataHART information1. Manufacturer2. Model3. HART Dev. I.D.4. Universal Rev.5. Fld. Dev. Rev.6. Software Rev.7. Hardware Rev.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 119mmmmmH: HART CommunicationsChart 21. Master Reset2. Standard Setup3. Quick Setup4. Volume 5. Failsafe1. URV2. LRV3. Damping1. Units2. Empty3. Span4. Language5. Operation6. Response7. Antenna1. Shape2. Max Vol3. Dimension A4. Dimension L5. Bk LevVol Gr1. mA Function2. FS Timer3. FS Default Measurement4. FS Advance5. FS Level valBasic Setup Standard SetupQuick SetupVolumeFailsafe1. Bk Lev1Val2. Bk Vol1Val3. Bk Lev2Val4. Bk Vol2Val5. Bk Lev3Val6. Bk Vol3Val7. Bk Lev4Val8. Bk Vol4Val9. Bk Lev5Val10. Bk Vol5Val11. Bk Lev6Val12. Bk Vol6Val13. Bk Lev7Val14. Bk Vol7Val15. Bk Lev8Val16. Bk Vol8Val17. Bk Lev9Val18. Bk Vol9Val19. Bk Lev10Val20. Bk Vol10Val21. Bk Lev11Val22. Bk Vol11Val23. Bk Lev12Val24. Bk Vol12Val25. Bk Lev13Val26. Bk Vol13Val27. Bk Lev14Val28. Bk Vol14Val29. Bk Lev15Val30. Bk Vol15Val31. Bk Lev16Val32. Bk Vol16Val33. Bk Lev17Val34. Bk Vol17Val35. Bk Lev18Val36. Bk Vol18Val37. Bk Lev19Val38. Bk Vol19Val39. Bk Lev20Val40. Bk Vol20Val41. Bk Lev21Val42. Bk Vol21Val43. Bk Lev22Val44. Bk Vol22Val45. Bk Lev23Val46. Bk Vol23Val47. Bk Lev24Val48. Bk Vol24Val49. Bk Lev25Val50. Bk Vol25Val51. Bk Lev26Val52. Bk Vol26Val53. Bk Lev27Val54. Bk Vol27Val55. Bk Lev28Val56. Bk Vol28Val57. Bk Lev29Val58. Bk Vol29Val59. Bk Lev30Val60. Bk Vol30Val61. Bk Lev31Val62. Bk Vol31Val63. Bk Lev32Val64. Bk Vol32Val
Page 120 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmH: HART CommunicationsChart 3Chart 4Detailed Setup1. Echo Lock2. Echo Select3. TVT Setup4. Echo Quality1. Algorithm2. Blanking3. Rng ExtEcho SelectTVT SetupEcho QualityEcho Lock1. Auto TVT2. Range3. Hover1. Confidence2. Strength3. Noise Average4. Noise Peak5. Threshold Long1. Echo Lock2. Sampling Up3. Sampling Down4. Window1. Poll Addr2. Num Req Preams3. Num Resp PreamsAnalog Ouput1. Write Protect2. Lock3. Write Protect4. Unlock ValueOutput parameter1. Analog Output2. Apply Values 3. Local Display.4. HART Output Local Display HART Output 1. Read AnalogOut2. mA Function3. FS Default Measurement4. Min mA5. Max mA6. Low Setpoint7. High Setpoint
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 121mmmmmH: HART CommunicationsSupported HART Commands:SITRANS LR 250 conforms to HART rev. 5 and supports the following:Universal Commands 0, 1, 2, 3, 6, 7, 8, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22Common Practice Commands 33, 34, 35, 36, 37, 38, 40,41, 42, 44, 45, 46, 48, 50, 51, 53, 54, 59Device Specific Commands Command 150 Read Echo SummaryCommand 151 Read Echo Data ProfileCommand 162 Read VolumeCommand 163 Write VolumeCommand 164 Read Volume BreakpointCommand 165 Write Volume BreakpointCommand 166 Read FailsafeCommand 167 Write FailsafeCommand 170 Read Echo LockCommand 171 Write Echo LockCommand 172 Read TVTCommand 173 Write TVTCommand 174 Read TVT ShaperCommand 175 Write TVT ShaperCommand 178 Read Analog SpecialCommand 179 Write Analog SpecialCommand 182 Read Range CalibrationCommand 183 Write Range CalibrationCommand 186 Read WearCommand 206 Read ConfidenceCommand 207 Write Confidence ThresholdCommand 208 Read Local Display CommandsCommand 209 Write Local Display CommandsUniversal and Common Practice CommandsFor details on the Universal and Common Practice Commands, please contact the HART Communication Foundation. Device Specific CommandsFor a document containing the Device Specific Commands, please contact Siemens Milltronics at techpubs.smpi@siemens.com.
Page 122 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmJ: Sorftware RevisionAppendix L: Software Revision HistorySoft-ware Rev.DD Rev. Date Changes• Initial release
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 123mmmmmGlossaryGlossaryaccuracy: 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 curve 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: describes the quality of an echo. HIgher values represent higher quality. Confidence threshold defines the minimum value.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 124 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmGlossaryderating: to decrease a rating suitable for normal conditions according to guidelines specified for different conditions. dielectric: a nonconductor of direct electric current.1dielectric 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: the recognition of the validity of the echo. A measure of echo reliability.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 above 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.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 125mmmmmGlossarymultiple 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.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 126 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE01mmmmmGlossarystilling-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.
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 127mmmmmIndexIndexAAbbreviations and Identificationslist 2activating LR 460 33address 90agitator blade detectionavoiding 72agitators 72analog outputin Measure mode 110response rate 106application example 37application exampleshorizontal tank with volume 59liquid resin in storage vessel 58Auto False-Echo Suppression 108TVT shaper adjustment 56Bbeam spreading 13blanking (see Near Range) 108Ccablesrequirements 24cleaninginstructions 104conduitsrequirements 24Ddevice descriptionHART 117Device Description (DD)how to update 54Eecho confidence 107Echo Lockexplanation 107emission conerequirements 13enclosureopening 24rotating 15Ffactory resetvia PDM 55failsafe timer 111Fail-safe Timers 107false echo suppression 108false echoesset TVT curve to ignore 108flange sizeschart 23function keysnavigation mode 49HHARTdevice description 117HART Communicationsdetails 117hazardous area installationswiring requirements 25IIdentifications and Abbreviationslist 2installationhazardous area requirements 25requirements 11internal temperaturemonitoring 111LLevel application example 37level trend viewingyT diagram in PDM 56lid-lock set screw 24locking ring 15, 24loop voltage vs. loop resistancepower supply requirements 26loss of echodefinition 107MmA output in Measure mode 110maintenancecleaning 104maintenance settings 81material mixers 72Measurement Responseexplanation 106mounting (standard)horn antennas 14shielded rod 14NNear Range (blanking) 108
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 128mmmmmIndexOoperating principles 105Pparameter resetfactory reset via PDM 55parameter settingsadjust via PDM 52PDMsee SIMATIC PDM 52pipe sizes 23power sourcerequirements 24power supply requirementsloop voltage vs. loop resistance 26process temperaturemaximum 111PROFIBUS address 90programming chart 95Programming SITRANS LR 460 34QQuick Start (PDM)helpful hints 40launching 39Quick Start Wizardvia handheld programmer 35via SIMATIC PDM 38Rreceiver signal 106reset parametersvia PDM 55Ssettingsadjust parameters via PDM 52SIMATIC PDMoverview 52Quick Start 39Rev. 6.0, SP2 features 52SITRANS LR 200overview 4SITRANS LR250operating principles 105stillpipeweld requirements 16Supportcontact information 2Ttemperature de-Ratingcharts 112temperature specificationAmbient/Operating 12terminalsaccessing 24troubleshootingcommunications 97operation 101TVT curve 108TVT Shapermanual adjustment via PDM 56Vvessel shapeconical top 12parabolic top 12selection 67Wwelded jointsrequirements 16wiringcables 24YyT Diagramlevel trend viewing 56
7ML19985JE01 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 129mmmmmIndex
Page 130 SITRANS LR250 – INSTRUCTION MANUAL 7ML19985JE01mmmmmLCD menusLCD menu structure 1. QUICK START1.1 APPLICATION1.2 RESPONSE RATE1.3 SENSOR UNITS1.4 OPERATION1.5 LOW CALIB. PT.1.6 HIGH CALIB. PT.1.7 APPLY? 2. SETUP2.1 DEVICE2.1.1 LCD CONTRAST2.2 INPUT2.2.1 SENSOR CALIB.2.2.1.1 ANTENNA2.2.1.2 APPLICATION2.2.1.3 RESPONSE RATE2.2.1.4 SENSOR UNITS2.2.1.5 OPERATION2.2.1.6 LOW CALIB. PT.2.2.1.7 HIGH CALIB. PT.2.2.1.11 NEAR RANGE2.2.1.12 FAR RANGE2.2.1.13 PROPAG. FACTOR2.2.1.14 LEVEL OFFSET2.2.2 VOL CONVERSION2.2.2.1 VESSEL SHAPE2.2.3 VOLUME BREAKPT2.2.3.1 MAX. VOLUME2.2.3.2 DIMENSION A2.2.3.3 DIMENSION L2.2.3.4 TABLE 1 – 82.2.3.5 TABLE 9 – 162.2.3.6 TABLE 17 – 242.2.3.7 TABLE 25 – 322.2.4 ECHO PROC.2.2.4.1 ECHO SELECT2.2.4.1.1 ALGORITHM2.2.4.1.2 POSITION2.2.4.1.3 ECHO THRESHOLD2.2.4.2 SAMPLING2.2.4.2.1 ECHO LOCK2.2.4.2.4 SAMPLING UP2.2.4.2.5 SAMPLING DOWN2.2.4.2.6 WINDOW
7ML19985JE01 SITRANS LR250– INSTRUCTION MANUAL Page 131mmmmmLCD menus2.2.4.3 FILTERING2.2.4.3.2 DAMPING FILTER2.2.4.4 TANK BOTTOM ALG2.2.4.4.3 CLEF RANGE2.2.4.5 NOISE2.2.4.5.1 CONFIDENCE2.2.4.5.2 STRENGTH2.2.4.5.3 NOISE AVERAGE2.2.5 TVT SETUP2.2.5.1 TVT HOVER LEVEL2.2.5.6 AUTO ECHO SUPP2.2.5.7 AUTO SUPP RANGE2.2.5.8 SHAPER MODE2.2.6 TVT SHAPER2.2.6.1 SHAPER 1-92.2.6.2 SHAPER 10-182.2.6.3 SHAPER 19-272.2.6.4 SHAPER 28-362.2.6.5 SHAPER 37-402.2.7 RATE2.2.7.1 RESPONSE RATE2.2.7.2 FILL RATE2.2.7.3 EMPTY RATE2.2.8 TB VALUES2.2.8.1 READING MEAS.2.2.8.2 MATERIAL MEAS.2.2.8.3 SPACE MEAS.2.2.8.4 DISTANCE MEAS.2.2.8.5 VOLUME MEAS.2.2.8.7 SENSOR VALUE2.3 OUTPUT2.3.1 MA OUTPUT2.3.1.1 MA OUTPUT VALUE2.3.1.2 MA OUTPUT FUNC.2.3.1.3 4 MA SETPOINT2.3.1.4 20 MA SETPOINT2.3.1.5 MIN. MA LIMIT2.3.1.6 MAX. MA LIMIT2.3.1.7 4 MA OUTPUT TRIM2.3.1.8 20 MA OUTPUT TRIM2.4 FAIL-SAFE2.4.1 FAILSAFE TIMERS2.4.2 FAILSAFE MAT. LEVEL2.4.4 FAILSAFE LEVEL3. DIAGNOSTICS3.1 ECHO PROFILE3.14 MEAS. VALUES3.14.1 CURR. INTERN. TEMP.3.14.2 MAX. INTERN. TEMP.3.14.3 MIN. INTERN TEMP.
Page 132 SITRANS LR250 – INSTRUCTION MANUAL 7ML19985JE01mmmmmLCD menus3.15 REMAIN. DEV. LIFE3.15.1 TOTAL OP--TIME3.15.2 REMAIN. LIFETIME3.15.3 MAINT REQ LIMIT3.15.4 MAINT DEM LIMIT3.15.5 ALERT ACTIVATION3.15.6 TOTAL EXP. LIFE3.15.7 MAINT STAT3.15.8 ACK STATUS3.15.9 ACK3.16 REMAIN. SENS. LIFE3.16.1 SENS OP--TIME3.16.2 REMAIN. LIFETIME3.16.3 MAINT REQ LIMIT3.16.4 MAINT DEM LIMIT3.16.5 ALERT ACTIVATION3.16.6 TOTAL EXP. LIFE3.16.7 MAINT STAT3.16.8 ACK STATUS3.16.9 ACK4. SERVICE4.1 FACTORY RESET4.2 POWERED HOURS4.4 POWERON RESETS4.7 MANUF. DATE4.8 SOFTWARE REV4.9 LOADER REV4.11 HARDWARE REV4.12 MEM. TEST4.17 SERVICE INTERVAL4.17.1 TIME LAST SERV4.17.2 MAINT REQ LIMIT4.17.3 MAINT DEM LIMIT4.17.4 ALERT ACTIVATION4.17.5 SERVICE INTERVAL4.17.6 MAINT STAT4.17.7 ACK STATUS4.17.8 ACK4.18 CALIB. INTERVAL4.18.1 TIME LAST CAL.4.18.2 MAINT REQ LIMIT4.18.3 MAINT DEM LIMIT4.18.4 ALERT ACTIVATION4.18.5 TOTAL CALIB.INTRV4.18.6 MAINT STAT4.18.7 ACK STATUS4.18.8 ACK
7ML19985JE01 SITRANS LR250– INSTRUCTION MANUAL Page 133mmmmmLCD menus5. COMMUNICATION5.1 DEVICE ADDRESS5.2 COMM. CONTROL6. SECURITY6.1 LOCK6.2 UNLOCK VALUE7. LANGUAGE

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