Rosemount Tank Radar REX Radar Level Gauge User Manual Installation manual

Rosemount Tank Radar AB Radar Level Gauge Installation manual

Installation manual

INSTALLATIONMANUALW11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"W11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"W11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"ParabolicAntennaGaugeStill PipeGaugeHornAntennaGaugeLPG/LNGGaugeCopyright © June 1995Saab Marine Electronics ABUS Version
2Saab TankRadar L/2US Version. Seventh edition, June 1995Installation ManualCopyright © June 1994Saab Marine Electronics ABThe contents, descriptions and specifications within this manual issubject to change without notice. Saab Marine Electronics ABaccepts no responsibility for any errors that may appear in thismanual.The manuals available for TankRadar L/2 are- Technical Description- Installation Manual- Operator’s Manual- Operator’s Manual for OPI/2- COS Operator’s Manual- Service ManualThe Technical Description contains all technical data on the vari-ous parts of the TankRadar L/2 System.The Installation Manual is used for planning and performing theinstallation of the system.Once the parts of the system have been installed, then use eitherthe Operator’s Interface (OPI) or the Configuration Software(COS) to configure the system. See the OPI Operator’s Manual orthe COS Operator’s Manual for detailed explanation.The OPI Operator’s Manual describes how to operate theTankRadar L/2 System using the Operator’s Interface software ona personal computer.The Operator’s Manual for OPI/2 describes Operator’s Interfacewith the optional inventory functions included, designated OPI/2.The COS Operator’s Manual describes how to use the Configura-tion Software (COS).
Saab TankRadar L/23US Version. Seventh edition, June 1995Installation ManualContentsThe manuals available for TankRadar L/2 are ............................................... 2Denominations and abbreviations used in this manual: .............................. 61 Introduction to the TankRadar L/2 System .................................... 72 Safety ............................................................................................... 102.1 Intrinsic Safety .................................................................................. 102.2 Explosion Proof................................................................................. 112.3 Specific FCC Requirements (US market only) ............................. 113 Description of the Radar Tank Gauges ......................................... 123.1 Transmitter Head............................................................................. 123.1.1 Electronic Unit ............................................................................ 133.1.2 Cable Outputs ............................................................................. 133.1.3 Power Supply to the Radar Tank Gauge................................. 143.1.4 Barrier Unit Card, BU (Option) ................................................ 143.1.5 Current Loop Card, CLC (Option)........................................... 153.1.6 Metrological Seal ........................................................................ 153.1.7 Installation Data for the Transmitter Head............................. 153.2 Description of the Horn Antenna Gauge, RTG 2920.................... 163.2.1 Installation Data for RTG 2920 ................................................. 163.3 Description of the Parabolic Antenna Gauge, RTG 2930............. 173.3.1 Installation Data for RTG 2930 ................................................. 173.4 Description of the Still Pipe Gauge, RTG 2940 ............................. 183.4.1 Installation Data for RTG 2940 ................................................. 183.5 Description of the LPG/LNG Gauge, RTG 2960 ........................... 193.5.1 Installation Data for RTG 2960 ................................................. 194 Description of the Data Acquisition Units ................................... 204.1 Connection of the Sensors .............................................................. 204.2 Selecting the Temperature Range .................................................. 214.3 Local Readout Display ..................................................................... 214.4 Write Enable/Inhibit Switch............................................................ 214.5 Common Installation Data for Both DAUs ................................... 224.6 Description of the Slave Data Acquisition Unit, DAU 2100......... 224.6.1 Installation Data for DAU 2100 ................................................ 224.7 Description of the Independent Data Acquisition Unit................ 234.7.1 Power Supply.............................................................................. 234.7.2 Relays (Optional)........................................................................ 234.7.3 Installation Data for DAU 2130 ................................................ 245 Description of the Field Bus Modem, FBM 2170 ......................... 245.1 Installation Data for FBM 2170 ................................................. 246 Description of the Field Communication Unit, FCU 2160......... 256.1 Communication Ports ..................................................................... 256.2 FCU Enclosure.................................................................................. 266.3 FCU Power Supply ........................................................................... 266.4 Write Inhibit/Enable Switch............................................................ 266.5 Installation Data for FCU 2160....................................................... 27
4Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual7 Description of the Junction Boxes................................................. 287.1 Junction Box JB 8 for Connection of RTG to Slave DAU ............. 287.2 Junction Box JB 12 for Connection of RTG (with CLC) toSlave DAU ......................................................................................... 287.3 Junction Box JB 16 for Connection to RTG and Independent DAU297.4 Junction Box JB 36 for Connection of Temperature Sensors ....... 298 Connection to a Plant Host Computer (Plant DCS) .................. 298.1 Connect to the FCU for Quick Updates........................................ 308.2 Connect to OPI/2 for Inventory Data ............................................ 309 Installation Schedule ...................................................................... 3010 Requirements on the installation of the Radar Tank Gauges ..... 3110.1 Requirements for the Horn Antenna Gauge, RTG 2920 .............. 3210.1.1 Free Space Requirement ............................................................ 3210.1.2 Socket Requirement.................................................................... 3310.2 Requirements for Parabolic Antenna Gauge, RTG 2930.............. 3410.2.1 Inclination of the Parabolic Antenna Gauge........................... 3410.2.2 Free Space Requirement ............................................................ 3510.2.3 Flange Requirements ................................................................. 3610.2.4 New Tanks................................................................................... 3610.2.5 Socket Requirements.................................................................. 3710.3 Requirements for the Still Pipe Gauge, RTG 2940 ....................... 3810.3.1 Still Pipe Requirements.............................................................. 3810.3.2 Flange Requirements ................................................................. 3810.3.3 New Tanks................................................................................... 3910.3.3 Service Space ............................................................................... 3910.4 Requirements for the LPG/LNG Gauge, RTG 2960 ..................... 4010.4.1 Temperature and Pressure Measurement ............................... 4010.4.2 Still Pipe ....................................................................................... 4010.4.3 References in Still Pipe............................................................... 4010.4.4 System with Reference Pin and Reflector Plug...................... 4110.4.5 System with Reference Pins Only ............................................ 4110.4.6 Extension Pipe for Minimum Distance ................................... 4111 Mechanical Installation of the Radar Tank Gauges ...................... 4211.1 Installation of Horn Antenna Gauge, RTG 2920 ........................... 4211.2 Installation of the Parabolic Antenna Gauge, RTG 2930 ............. 4411.3 Installation of the Still Pipe Gauge, RTG 2940.............................. 4711.4 Installation of the LPG/LNG Gauge, RTG 2960 ............................ 5012 Electrical Installation...................................................................... 5312.1 Cabling for Power Supply ................................................................ 5312.2 Cabling for TRL/2 Bus ...................................................................... 5412.3 Grounding ......................................................................................... 5412.4 Electrical Installation of the Radar Tank Gauge, RTG .................. 5412.4.1 The Non-Intrinsically Safe Connection (W11)........................ 5412.4.2 The Intrinsically Safe Connection (W12)................................. 54
Saab TankRadar L/25US Version. Seventh edition, June 1995Installation Manual12.5 Electrical Installation of the Data Acquisition Unit, DAU ........... 5512.5.1 Electrical Installation of the Slave DAU, DAU 2100.............. 5512.5.2 Electrical Installation of the Independent DAU, 2130........... 5512.6 Electrical Installation of the Field Bus Modem, FBM 2170 .......... 5612.7 Electrical Installation of the Field Communication Unit,FCU 2160 .......................................................................................... 5613 List of Drawings .............................................................................. 5713.1 Mechanical Installation .................................................................... 5713.2 Electrical Installation ....................................................................... 5714 Description of the Required System Information ....................... 5814.1 System Configuration ...................................................................... 5814.2 System Master .................................................................................. 5814.3 Plant Host Computer System (Plant DCS) .................................. 5814.1.3 Tank Data ..................................................................................... 58Required System Information Form......................................... Appendix 1Index.................................................................................................... Index 1
6Saab TankRadar L/2US Version. Seventh edition, June 1995Installation ManualDenominations and abbreviations used in this manual:BU - Barrier UnitCLC - Current Loop CardDAU - Data Acquisition UnitDMB - DAU Mother BoardDOS - Disk Operating System. An operating systemfor PC’s.DPS - DAU Power Supply boardDXB - DAU Extended BoardEEPROM - Electrically Erasable PROMFBM - Field Bus ModemFCC - Federal Communications CommissionFCU - Field Communication UnitFMCW - Frequency Modulated Continuous WaveFSK - Frequency Shift KeyedIS - Intrinsically SafeJB - Junction BoxLCD - Liquid Crystal DisplayOPI - Operator’s InterfaceOS/2 - An operating system for PC’s.PC - Personal ComputerPCB - Printed Circuit BoardPROM - Programmable Read Only MemoryPTFE - Polytetrafluoroethylene. A polymer also mar-keted as Teflon.RF-head - A device for emitting and receiving micro-waves.RTD - Resistance Temperature DetectorsRTG - Radar Tank GaugeTH - Transmitter HeadTRL - Tank Radar L (First generation)TRL/2 - Tank Radar L/2VAC - Volts Alternating CurrentVDC - Volts Direct Current
Saab TankRadar L/27US Version. Seventh edition, June 1995Installation Manual1 Introduction to the TankRadar L/2 SystemThe TankRadar L/2 System is a monitoring and control system fortank level gauging. The system can interface various sensors, suchas temperature and pressure sensors, for complete inventorycontrol.There is a distributed intelligence in the various units of the sys-tem. The units continuously collect and process information.When a request for information is received an immediate responseis sent with updated information. The units communicate witheach other on a field bus, the TRL/2 Bus.No part of the equipment is in actual contact with the product inthe tank and the antenna is the only part of the gauge that is ex-posed to the tank atmosphere. The Radar Tank Gauge sends mi-crowaves towards the surface of the product in the tank. The levelis calculated based on the echo from the surface.TankRadar L/2 can measure the level of almost any product,including bitumen, crude oil, refined products, aggressive chemi-cals, LPG and LNG, etc. Using a suitable Tank Connection Unit,the TankRadar L/2 System can gauge any type of tank.Operator'sInterface(IBM PS/2 or Compaq)Optional HostComputer orSlave PCOptional SecondTank GroupModbus protocolFBMRTG IndependentDAUSlaveDAULocalReadoutTemp.sensorsField busRTG RTG RTGSlaveDAU SlaveDAUTemp.sensorsRS232CControl Room LevelField LevelTemp. SensorsPress. TransducersetcAnalog inputsAnalog outputsRTGFigure 1.1. Example of a small TankRadar L/2 System.
8Saab TankRadar L/2US Version. Seventh edition, June 1995Installation ManualGroupLevelFieldLevelTemperatureSensorsControlRoomLevelStill PipeGaugeDAUDAURTGHazardousAreaNon-HazardousAreaPlant HostComputerTo PortableService PCwith COSFCUFBMTo OtherFCUsOperator'sInterfaceTRL/2 Group BusTRL/2 Field BusTRL/2 Field BusRS-232CRTGDAUFCUTo OtherTanksAlarm LogPrinterReportPrinterParabolic An-tenna GaugeRTGFBMTemperatureSensorsLPG/LNGGauge0000.200CancelValue EntryEnter New TankTank1Value Hi Lim Lo Lim HH Lim LL LimTemp AvgLevelDelay HystTemp AvgLevelPressurePressureLeak LimitEnableAutoAutoAuto18.000120.02.02.00080.00.020.000 1.0005.00.50.200Figure 1.2. Example of a general configuration of a TankRadar L/2 System.All the measured data is presented to the operator by theOperator’s Interface, which in its complete version contains inven-tory functions. A plant host computer can be connected for furtherprocessing of data.All Saab Tank Control supplied parts for tank top mounting weighless than 25 kg (55 lb) (except for pressure flange etc. for the LPG/LNG Gauge). This makes it possible for one man to carry thevarious TankRadar parts to the tank top for installation.Please read the Technical Description for a more detailed descrip-tion of the Saab TankRadar L/2 system.
Saab TankRadar L/29US Version. Seventh edition, June 1995Installation ManualThe basic parts of the TankRadar L/2 System are:- The Radar Tank Gauge, RTG, is an intelligent explosionprotected instrument for measuring the level of a productinside a tank. Four different Tank Connection Units can beattached in order to satisfy a variety of different applications.- The Data Acquisition Unit, DAU, can interface variousexternal sensors and actuators. There are two versions of theDAU, the Slave DAU and the Independent DAU. The SlaveDAU can measure temperature while the Independent DAU,in addition to temperature measurement , has analog anddigital inputs. Both versions can, as an option, be equippedwith a LCD-display for local readout of the measured values.- The Field Communication Unit, FCU, acts as a gateway anddata concentrator between the Group Bus and the Field Bus.Each FCU can have a total of 32 RTGs and 32 DAUs con-nected to it.- The Field Bus Modem, FBM, is a converter between RS-232Cand the TRL/2 Bus. It is used for connecting a PC with OPI(or COS) to the TRL/2 Bus.- The Operator’s Interface, OPI, is a software for presentingthe values measured in the TRL/2 system. The Operator’sInterface is also used to set alarm limits, perform setups,configuration and calibration of the TRL/2 System.- The Configuration Software, COS, is normally used on aportable Service PC, operating under DOS. The Service PCcan be connected to one of the FCUs Group Bus ports ordirectly to the Field Bus via an FBM. It is used for service,configuration and calibration purposes. It is not a substitu-tion for the more powerful OPI.
10Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual2 SafetyTankRadar L/2 equipment is often used in areas where flammablematerials are handled and where an explosive atmosphere may bepresent. To protect both the plant and the personnel, precautionsmust be taken to ensure that this atmosphere cannot be ignited.These areas are called hazardous areas and equipment withinthese areas must be explosion protected.A number of different explosion protection techniques have beendeveloped over the years. Intrinsic safety and explosion proof (orflame proof) safety are two techniques.2.1 Intrinsic SafetyIntrinsic safety, IS, is based on the principle of restricting electricalenergy available in hazardous-area circuits such that any sparks orhot surfaces, that may occur as a result of electrical faults in com-ponents, are too weak to cause ignition. Intrinsic safety is the onlytechnique accepted for Zone 0 hazardous areas. It is also safe forpersonnel and allows equipment to be maintained without theneed for a gas-free certificate.For example, the temperature measurement of the DAUs is intrin-sically safe.The basic principles of intrinsic safety are:- All flammable materials are grouped according to the energyneeded to ignite them.- Equipment located in hazardous areas are classified accord-ing to the maximum surface temperature that it can produceand this must be safe with the flammable gases that may bepresent.- Hazardous areas are classified according to the probabilitythat an explosive atmosphere is present, and this dictateswhether or not a particular explosion protection techniquemay be used.Important!For trouble shooting and repair work of components in or in connectionto intrinsically safe equipment, strict observance of the following rules isnecessary:- Disconnect the power supply to the Radar Tank Gauges or theIndependent Data Acquisition Units.- Use a certified battery operated instrument only.- Use Saab original spare parts only. Replacement with non-originalspare parts may jeopardize the intrinsic safety.
Saab TankRadar L/211US Version. Seventh edition, June 1995Installation Manual2.2 Explosion ProofExplosion proof enclosures can be used when an explosion can beallowed inside the enclosure as long as it does not spread to theoutside of it. The enclosure must be strong enough to withstandthe pressure and must have narrow gaps to allow the pressure toescape without igniting the atmosphere outside of the equipment.Important!Any substitution to non-recognized parts may impair intrinsic safety.The explosion-proof (flame-proof) enclosures of the Transmitter Head andthe Independent Data Acquisition Unit must not be opened while theunits are powered.2.3 Specific FCC Requirements (US market only)Saab TankRadar L/2 generates and uses radio frequency energy. Ifit is not installed and used properly, that is, in strict accordancewith the manufacturer's instructions, it may violate FCC regula-tions on radio frequency emission.Saab TankRadar L/2 has been FCC certified under test conditionswhich assume a metallic tank. Installation on a non-metallic tankis not certified, and is not allowed.The FCC certificate for TankRadar L/2 requires that the tank isclosed as far as emitted radio energy is concerned. Tanks withopen manholes, external-floating-roof tanks without still pipes etc.are not covered by the certificate.To ensure that no installations are made against the FCC rules, theadditional list in Appendix 5 of Tank Data at the end of thismanual must be completed and returned to Saab Tank Control forevaluation and approval.
12Saab TankRadar L/2US Version. Seventh edition, June 1995Installation ManualW11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"W11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"W11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"Transmitter HeadParabolicAntennaGauge,RTG 2930Still PipeGauge,RTG 2940LPG/LNGGauge,RTG 2960HornAntennaGauge,RTG 2920W11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"3 Description of the Radar Tank GaugesDepending on the type of tank connection unit that the Transmit-ter Head is mounted on, there are four types of Radar TankGauges:• The Horn Antenna Gauge, RTG 2920, for fixed roof installa-tion without still pipe.• The Still Pipe Gauge, RTG 2940, for measuring in still pipes.• The Parabolic Antenna Gauge, RTG 2930, for demandingenvironments without still pipe.• The LPG/LNG Gauge, RTG 2960, for liquid gas, LPG andLNG.3.1 Transmitter HeadThe same Transmitter Head is used on all four types of Radar TankGauges.Figure 3.1 shows the Transmitter Head
Saab TankRadar L/213US Version. Seventh edition, June 1995Installation ManualFigure 3.2 shows the Transmitter Head3.1.1 Electronic UnitThe Electronic Unit is placed inside the safety enclosure of theTransmitter Head. The Electronic Unit includes the microwaveunit, and cards for signal processing, data communication, andpower supply with transient protection.A number of options require that cards are included in the Elec-tronic Unit.3.1.2 Cable OutputsThe Transmitter Head has one or two cable outlets. One is for thenon-intrinsically safe power connection and the connection to theTRL/2 Bus. The other is for the intrinsically safe connection of theoptional Slave Data Acquisition Unit, and/or the optional analoginputs and outputs of the Current Loop Card. The wires areclearly marked with numbers and the designation of the wires isshown on a printed plate at the cable outputs.W11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"Intrinsically safeconnection forSlave DAUSafety enclosureElectronic UnitMountingpins forWeatherProtectionHoodNon-intrinsicallysafe connectionfor power andTRL/2 BusGround connectionOption W-12 Connection Barrier Unit Current Loop CardSlave DAU 8-wire lead seal Required Not requiredCurrent Loop Card2 inputs + 2 outputs 12-wire lead seal Not required RequiredSlave DAU andCurrent Loop Card2 inputs + 2 outputs 12-wire lead seal Required RequiredCurrent Loop Card3 inputs + 2 outputs 12-wire lead seal Not required RequiredTable 3.1. The table describes what is required when the optional SlaveDAU and/or the optional Current Loop Card are included.
14Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual3.1.3 Power Supply to the Radar Tank GaugeThere is a switch on the Electronic Unit for setting of the powersupply to 115 V or 230 V. As standard the switch is set to 230 V.To select supply voltage, remove the cover of the Safety Enclosureand set the switch on the Electronic Unit to either 115 V or 230 V.See figure 3.3Figure 3.3.Note: Do not turnthe switch all theway around as itmay damage theswitch.MAINS VOLTAGE SELECTOR115V/230VSELECTED VOLTAGE TOBE MARKED ON OUTSIDENAMEPLATE230 V115 VMains wired for 230 VAC 0.4AMark Box if re-wired for 115 VAC 0.8ASelector inside enclosure.Serial no: UI:CAUTION: To prevent ignition of hazardousatmospheres, disconnect the device from thesupply circuit before opening. Keep assemblyclosed when in operation.Do not open while enrgized.Ne pas ouvrir sous tension.Hazardous Location Class IGroup C and D. (Intrinsically Safeoutputs Group A,B,C and D)Temperature Coide T4.Leads factory sealed. The deviceprovides intrinsically safe outputsSee control drawing 9150057-901Ambient temperature -40 to + 65°CBox marked when this enclosurecontains Associated ElectricalApparatus. Component Certificate BAS Ex91C2065U coded [EExia]IIC BAS Ex93C2043U coded [EExia]IIBEEx dIIB T4 T amb = -40 to +65°CBASEEFA Ex91C1065XRadar Unit Type TH 2000ExA division of Saab Marine Electronics ABMADE IN SWEDENLISTED 939UMains wired for 230 VAC 0.4AMark Box if re-wired for 115 VAC 0.8ASelector inside enclosure.Serial no: UI:CAUTION: To prevent ignition of hazardousatmospheres disconnect the device from thW11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"RTGnameplateMark the box on theRTG name plate if thepower setting has beenchanged to 115 VAC.RTGFigure 3.4.Note: On the labelon top of the Trans-mitter Head, there isa box that must bemarked with an "X"if you set the switchto 115 V. See figure3.3. Always checkthis label beforeconnecting power tothe Electronic Unit.3.1.4 Barrier Unit Card, BU (Option)The optional Barrier Unit Card is used when a Slave Data Acquisi-tion Unit is connected to a Radar Tank Gauge. It provides intrinsi-cally safe power and communication between the Slave DAU andthe RTG. The Barrier Unit is installed inside the Transmitter Head.The Barrier Unit is connected to the Slave DAU through the Intrin-sically Safe Connection W12 on the Radar Tank Gauge.Note: Installation of the Barrier Unit Kit, the Current Loop Card or theMetrological Seal may only be done by personnel from Saab Tank Con-trol.
Saab TankRadar L/215US Version. Seventh edition, June 1995Installation Manual3.1.5 Current Loop Card, CLC (Option)The optional Current Loop Card provides intrinsically safe 4-20mA inputs and outputs. The inputs can be used for example forpressure sensors, while the outputs can be used for pointer instru-ments or for output of a measured value as an analog signal.If a Slave DAU is also connected, two 4-20 mA inputs and two 4-20 mA outputs are available. If a Slave DAU is not connected, oneadditional 4-20 mA input is available, although this transducermust have its own intrinsically safe power supply.When the optional Current Loop Card is used, the JB 12 JunctionBox from Saab Tank Control is recommended since the cables areseparated inside the box according to the requirements for intrin-sic safety. See chapter 7.2.W11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"~2 m cablewithprotectivehoseTransmitter Head withCurrent Loop CardSignalPower230/115 V~2 m cablewithprotectivehoseJB 12 JB 16AnaloginputsAnalogoutputsFigure 3.5 shows a Transmitter Head with a Current Loop Card.3.1.6 Metrological SealThe Metrological Seal consists of a rod that can activate a write-enable switch from the outside of the Transmitter Head. This rodcan be sealed in the write-inhibit position to prevent unauthorizedchanges in the database.If there is no Metrological Seal mounted, then the TransmitterHead is always in write-enable mode.3.1.7 Installation Data for the Transmitter HeadAmbient operating temperature: -40°C to +65°C(-40°F to +149°F)Explosion protection Class 1, Div I, Groups C and D(UL1203, UL913 USA) andEEx d[ia] IIB T4 (EN50014,EN50018 and EN50020 Europe)Power Supply 115 or 230 VAC, +10% to -15%,50-60 Hz, max. 80 WField bus TRL/2 Bus (FSK, half duplex,two wires, galvanically iso-lated, 4800 Baud)
16Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual3.2 Description of the Horn Antenna Gauge, RTG 2920.The Horn Antenna Gauge is designed for easy mounting in smallsize openings on tanks with fixed roof. A flange with a diameter of8" is enough to mount the RTG 2920.The RTG 2920 is designed for measurement of a variety of oilproducts and chemicals except for bitumen/asphalt and similarproducts where the Parabolic Antenna Gauge RTG 2930 is recom-mended.The wide beam of the Horn Antenna Gauge is a disadvantage innarrow tanks with internal structures. In such cases the ParabolicAntenna Gauge is generally recommended.The Horn Antenna Gauge is delivered with one of two types offlanges. One flange is for straight mounting. The other flange isused for inclined mounting.See also chapter 10.1 for installation requirements for the HornAntenna Gauge.3.2.1 Installation Data for RTG 2920Operating temperature in tank Max. +150°C (+300°F)Min. -40°C (-40°F)Measuring range 0.85 to 30 m below flange(2.7 to 66 ft.)Pressure -0.5 to 2 barTotal weight Appr. 20 kg (44 lbs.)Socket size Min. 8"WeatherProtectionHoodTransmitterHeadConeClosing0.35 mFigure 3.6 shows the Horn Antenna Gauge.
Saab TankRadar L/217US Version. Seventh edition, June 1995Installation Manual3.3 Description of the Parabolic Antenna Gauge, RTG 2930The Parabolic Antenna Gauge RTG 2930 measures level of alltypes of liquids, from light products to bitumen/asphalt. Thegauge is designed for mounting on tanks with fixed roofs and hascustody transfer accuracy.The design of the parabolic antenna provides extreme toleranceagainst sticky and condensing products.See also chapter 10.2 for installation requirements for the ParabolicAntenna Gauge.3.3.1 Installation Data for RTG 2930Operating temperature in tank Max. +230°C (+445°F)Measuring range 0.8 to 40 m below flange(2.7 to 131 ft.)Pressure -0.5 to 2 barTotal weight Appr. 25 kg (55 lbs.)Socket size Min. 20"WeatherProtectionHoodTransmitterHead ClosingInclinationDeviceParabolicReflectorAntennaFeederAdaptorFlange0.45 m0.75 mFigure 3.7 shows the Parabolic Antenna Gauge.
18Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual3.4 Description of the Still Pipe Gauge, RTG 2940The Still Pipe Gauge is used on tanks with still pipes and with allproducts suited for still pipes.The gauge uses a low-loss radar propagation mode which virtu-ally eliminates the influence of the still pipe condition. Measure-ment is made with highest accuracy even when the pipe is old,rusty and covered with deposits.The Still Pipe Gauge fits 6", 8", 10" and 12" pipes. It can bemounted on an existing still pipe and there is no need to take thetank out of operation during installation.See also chapter 10.3 for installation requirements for the Still PipeGauge.3.4.1 Installation Data for RTG 2940Operating temperature in tank Max. +230°C (+445°F)Measuring range 0 to 40 m from cone end(0 to 131 ft.)Pressure -0.2 to +0.5 barTotal weight Appr. 20 kg (44 lbs.)Still pipe dimension 6", 8", 10" or 12". See table 10.1for information on schedules.TransmitterHeadTransitionConeWaveguideUnitWaveguideConnectionStandSealingWeather Protection HoodStill pipeFigure 3.8 shows the Still Pipe Gauge.
Saab TankRadar L/219US Version. Seventh edition, June 1995Installation Manual3.5 Description of the LPG/LNG Gauge, RTG 2960The RTG 2960 is designed for level measurement in LPG and LNGtanks. A still pipe is required for the measurement. It prevents awavy or boiling surface from disturbing the measurement. Radarsignals are transmitted inside the pipe towards the surface.The pressure sealing is a quarts window approved for use inpressure vessels. As standard the gauge is also equipped with afire-proof block valve and a vapor space pressure sensor.The LPG/LNG Gauge is available in three different versions, a 150PSI version, a 300 PSI version and a 600 PSI version.The patented reference pin function enables verification of mea-surement without opening the tank. There is a Reference Pin at thetop of the still pipe and a Reference Plug made of epoxy resin atthe bottom. If epoxy can not be used in the tank, two or threereference pins can be used without the Reference Plug. By settingthe gauge into "test mode" it measures against these referencesand compares with the actual distances to these references thatwere stored during installation.See also chapter 10.4 for installation requirements for the LPG/LNG Gauge.3.5.1 Installation Data for RTG 2960Operating temperature in tank Stainless steel flange -66°C to +90°C (67°F to 194°F)Measuring range 0 to 40 m from cone end(0 to 131 ft.)Pressure Up to 25 bar (375 PSI)Still pipe dimension 4" Sch. 10 or 100 mm innerdiameter.Total weight 150 PSI – appr. 38 kg (84lbs)300 PSI – appr. 48 kg (106 lbs)600 PSI – appr. 68 kg (150 lbs)W11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"6" Existingpressurevesselflange1.0 m0.35 mLower FlangeWeatherProtectionHoodTransmitterHeadValvePressureTransducerPipe Cone4" or ø100 mmStill PipeHousingFigure 3.9 showsthe LPG/LNGGauge.
20Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual4 Description of the Data Acquisition UnitsThe Data Acquisition Unit, DAU, is a complement to the RadarTank Gauge and it can interface various external sensors andactuators. There are two versions of the DAU, the Slave DAU andthe Independent DAU. Both types have interfaces for temperaturemeasurement.Figure 4.1 shows the Slave DAU and the Independent DAU.4.1 Connection of the SensorsThe DAUs can connect up to 14 RTDs (Resistance TemperatureDetectors) on the X21 terminal on the motherboard. See figure 4.2.Under the lid of the Data Acquisition Unit there are instructionsprinted as to how to connect the sensors and transducers.434037343128252219161310741444138353229262320171411852454239363330272421181512963ConnecttemperaturesensorsDAUConnect ReferenceResistor to terminals43, 44 and 45.Figure 4.2 shows the wire terminals for the temperature sensors.
Saab TankRadar L/221US Version. Seventh edition, June 1995Installation Manual4.2 Selecting the Temperature RangeThe multiplexer for the RTDs has two different amplificationfactors which are jumper selected. It is also possible to provide anoffset to the measured signal by adding a current to it. The ampli-fication is selected on the X1 and X2 and the offset is selected onthe X3 according to the table in figure 4.3. The standard setting isfrom -50°C to +125°C. The database setting of the temperaturerange in the Operator’s Interface (OPI) or the Configuration Soft-ware (COS) must correspond to the setting of the jumpers.A high precision reference resistor must be connected to the X21terminal to positions 43, 44 and 45. Depending on the temperaturerange stated in the Required System Information form, one out ofthree different reference resistors is chosen and connected. Seefigure 4.2 and spare parts list in the Service Manual.X1 - OPENX2 - OPENX3 - CLOSEDTemperature RangePt 100 X1 X2 X3-50 - +125 °C OPEN OPEN CLOSED-50 - +300 °C CLOSED CLOSED CLOSED-200 - +150 °C CLOSED CLOSED OPENFigure 4.3 shows the selection of temperature range.4.3 Local Readout DisplayBoth versions can, as an option be equipped with a Local ReadoutDisplay showing the product level as well as the parameters mea-sured by the DAU itself.Installation data for Local Readout DisplayAmbient operating temperature: -30°C (-22°F)4.4 Write Enable/Inhibit SwitchIn order to enable programming of the EEPROM, the S1 switchmust be set in the position, towards the block terminals. Theswitch can be locked and sealed in the write inhibit position usinga wire through the clevis pins. See figure 6.3.
22Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual4.5 Common Installation Data for Both DAUsAmbient operating temperature: -40°C to +65°C (-40°F to +149°F)Temperature Sensors Pt 100 or Cu 100Number of sensor elements Max. 14 per DAUTemperature measuring range Range 1: -50 to +125 °CRange 2: -50 to +300 °CRange 3: -200 to +150°C4.6 Description of the Slave Data Acquisition Unit, DAU 2100The Slave DAU is intrinsically safe and is connected to the RadarTank Gauge on the same tank. It receives its power supply andcommunicates via the Barrier Unit Card in the Radar Tank Gauge.4.6.1 Installation Data for DAU 2100Explosion protection Class 1, Div I, Groups A,B,Cand D (UL913 USA) andEEx ia IIC T4 (EN50020 Europe)Power Supply Intrinsically safe supply fromRadar Tank GaugeField bus Intrinsically safe local line fromRadar Tank GaugeLCD Display forLocal ReadoutCable Outputs0.23 m0.28 mSaab Tank ControlTankRadar L /2EEx ia II C T4Tamb = -40° to +65°CBASEEFAEx91C2069Umax:in = 28 VDC Wmax:in = 1.3 WImas:in = 394 mADCCeq = 0 Leq = 0Serial no: UI:A division of Saab Marine Electronics ABFor intrinsically safe circuits onlyData Acquisition Unit Type DAU 2130Hazardous Location Class I Gorup Cand D. Temperature Code T4. The deviceprovides intrinsically safe outputs.See control drawing 9150 057-901Warning: any substitution of any componentsmay impair intrinsic safety.See service manualAmbient temperature -40° to +65°CListed 9390ULExMADE IN SWEDEN©Figure 4.4 shows the Slave Data Acquisition Unit.
Saab TankRadar L/223US Version. Seventh edition, June 1995Installation Manual4.7 Description of the Independent Data Acquisition UnitWarning: The DPS board inside the flameproof enclosure of the Indepen-dent DAU contains powered circuits on easily accessible components.In addition to the temperature measurement, the IndependentDAU has four analog inputs and eight digital inputs as well asfour relay outputs. The Independent DAU communicates directlyon the TRL/2 Bus.4.7.1 Power SupplyPower supply voltage to the Independent DAU is selected aseither 115 V or 230 V. The voltage is selected by jumpers in X5, a 4-pole screw terminal. The jumper is set to 230 V as standard. Seefigure 4.5.Note: The setting of the voltage is marked on the nameplate. If the switchis set to 115 V, mark the box on the nameplate: “Mark box If re-wired for115 VAC”.1234TankRadar L/2Saab Tank ControlULEx©Data Acquisition Unit Type DAU 2130A division of Saab Marine Electronics ABFor intrinsically safe circuits onlyEEx ia C T4BASEEFA Ex91C2069LISTED 939UMADE IN SWEDENTambU=28 W=1.3C=0 L =0max:inmax:in=394max:ineq eqIVDC WmADC=-40° to +65°CUI:Serial no:Ambient temperature -40° to +65°CSee service manualmay impair intrinsic safetyWarning: any substitution of componentsSee control drawing 9150 057-901provides intrinsically safe outputs.and D. Temperature Code T4. The deviceGroup CHazardous Location Class1234Figure 4.5 shows the voltage setting. Set 2-3 for 230 VAC. Set 1-2 and 3-4 for 115 VAC.4.7.2 Relays (Optional)There are four relays on the Independent DAU. The relays can beactivated by the level measured by the associated RTG or by anyof the parameters measured by the Independent DAU itself.The optional relays of the Independent DAU can be selected aseither normally open or normally closed. This is done by setting atwo way cable connector in alternative positions in a three pinheader connector. See figure 4.6.NO - NCFigure 4.6. Plugconnector in appro-priate position fornormally open ornormally closedoperation of therelay.
24Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual4.7.3 Installation Data for DAU 2130Explosion protection Class 1, Div I, Groups C and D(UL1203, UL913 USA) andEEx d[ia] IIB T4 (EN50014,EN50018 and EN50020 Europe)Power Supply 115 or 230 VAC, +10% to -15%,50-60 Hz, max. 10 WField bus TRL/2 Bus (FSK, half duplex,two wires, galvanically iso-lated, 4800 Baud)Current inputs 4-20 mA. Intrinsically safe.Number of current inputs Max. 4, multiplexed, only one ispowered at a timeNumber of status and frequencyinputs Max. 8. Intrinsically safe.Number of relay outputs Max. 4Relay contact rating 250 VAC / 5A (resistive load)5 Description of the Field Bus Modem, FBM 2170The Field Bus Modem, FBM, is a converter between RS-232C andthe TRL/2 Bus. It is used for connecting a PC with OPI (or COS) tothe TRL/2 Bus.Note: No explosion protection is provided, so the Field Bus Modem mustbe installed in a non-hazardous area.5.1 Installation Data for FBM 2170Power supply From AC/DC converter sup-plied by Saab Tank Control. 6-15 V, 10 mA).Cable to PC Supplied by Saab Tank ControlExplosion protection NoneSaab MarineElectronicsX2 X1Conn.to PCConn. to TRL/2Field Bus0.065 m0.115 mFigure 5.1 shows the Field Bus Modem.
Saab TankRadar L/225US Version. Seventh edition, June 1995Installation Manual6 Description of the Field Communication Unit,FCU 2160The Field Communication Unit continuously polls data from theRadar Tank Gauges and the Data Acquisition Units and stores it ina buffer memory. The Field Communication Unit is the master onthe Field Bus but acts as a slave on the Group Bus.Note: No explosion protection is provided, so the Field CommunicationUnit must be installed in a non-hazardous area.6.1 Communication PortsThe Field Communication Unit has six communication ports, X1to X6. The ports can be individually configured as either GroupBus or Field Bus ports. There can be maximum four Group Busesor four Field Buses at the same time. Maximum configuration canbe 2+4, 3+3 or 4+2 buses of each kind. However, ports X5 and X6are never configured as Field Bus ports, while the X1 and X2 portsare never configured as Group Bus ports.As standard the Field Communication Unit is delivered with sixFCM interface boards for four Field Bus ports and two Group Busports.The table below shows the maximum configurations of an ex-tended FCU:Ports: X1 X2 X3 X4 X5 X6Alternative 4+2: FB FB FB FB GB GBAlternative 3+3: FB FB FB GB GB GBAlternative 2+4: FB FB GB GB GB GBThere are also two jumper connectors delivered with each unit.These can be connected to the X5 and/or X6 for RS-232C GroupBus communication. See figure 6.1.Any of the FCM interface boards can be replaced with FCI inter-face boards for RS-485 communication.Note: The wire terminals 1 and 3 respectively 2 and 4 on FCM boardconnector are parallel connected. See installation drawing.X1X2X3X4X5X6TRL/2 Bus Interfaceboards, FCM boardsJumper forRS-232CFigure 6.1 shows thebus ports on theField Communica-tion Unit.
26Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual6.2 FCU EnclosureAs standard the Field Communication Unit is shipped in aweather protected, wall-mounted box of the same type as the DataAcquisition Unit. The Field Communication Unit is built on aPrinted Circuit Board and may be delivered as such for mountingwithin a customer supplied enclosure.6.3 FCU Power SupplyThere is a switch to select the supply voltage to either 115 V or 230V. The switch is set to 230 V as standard. See figure 6.2.If the switch is set to 115 V, mark the box on the nameplate: “Markbox If re-wired for 115 VAC”.NOTE: Do not turn the switch all the way around as it may damage theswitch.230 V115 VFigure 6.2. Setting of the supply voltage to the FCU.6.4 Write Inhibit/Enable SwitchThere is a write inhibit switch in the FCU. It can be locked in thewrite inhibit position by securing a locking plate with a wirethrough the clevis pins, see figure 6.3.230 V115 VWrite inhibitWriteenableReset switchFigure 6.3. Write enable/inhibit switch.
Saab TankRadar L/227US Version. Seventh edition, June 1995Installation Manual6.5 Installation Data for FCU 2160Ambient operating temperature: -40°C to +65°C(-40°F to +149°F)Power Supply 115 or 230 VAC, +10% to -15%,50-60 Hz, max. 80 WGroup bus interface TRL/2 Bus, RS-232 or RS-485Field bus interface TRL/2 Bus. Max 16 units onone portAmbient operating temperature: -40°C to +65°C(-40°F to +149°F)Explosion protection NoneNumber of RTGs and/or Independent DAUs Max. 32 RTGs and32 DAUsCable OutputsGroundConnectionSaab Tank ControlTankRadar L/2Serial no: UI:A division of Saab Marine Electronics ABField Connection Unit Type FCU 2160MADE IN SWEDEN0.23 m0.28 mFigure 6.4. The Field Communication Unit.
28Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual7 Description of the Junction BoxesSaab Tank Control can supply a series of junction boxes for theconnection of the various units in the TankRadar L/2 system.7.1 Junction Box JB 8 for Connection of RTG to Slave DAUThe JB 8 should only be used for intrinsically safe connections. It isused when a Slave DAU is located more than 1.6 m away from theRTG. It contains eight terminals, two holes for PG 16 glands, onePG 16 gland for cable diameter 11-15 mm.W11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"2 pcs PG 16~ 2 m wires withprotective hose CableDAUTHSaab Tank ControlTankRadar L/2EEx ia II C T4Tamb = -40° to +65°CBASEEFAEx91C2069Umax:in = 28 VDC Wmax:in = 1.3 WImas:in = 394 mADCCeq = 0 Leq = 0Serial no: UI:A division of Saab Marine Electronics ABFor intrinsically safe circuits onlyData Acquisition Unit Type DAU 2130Hazardous Location Class I Gorup Cand D. Temperature Code T4. The deviceprovides intrinsically safe outputs.See control drawing 9150 057-901Warning: any substitution of any componentsmay impair intrinsic safety.See service manualAmbient temperature -40° to +65°CListed 9390ULExMADE IN SWEDEN©JB 8Figure 7.1 shows the JB 8 Junction Box.7.2 Junction Box JB 12 for Connection of RTG (with CLC) toSlave DAUThe JB 12 should only be used for intrinsically safe connections. Itis used when a Current Loop Card is included in the RTG. It con-tains 12 terminals, various holes for glands from PG 13.5-PG 16.Six glands PG 13.5 for cable diameters 11-15 mm are included. Seealso chapter 3.1.5.W11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"6 pcs PG 13.5~ 2 m wires withprotective hose CableDAUTH 2 pcs PG 16AnaloginputsAnalogoutputsJB 12Saab Tank ControlTankRadar L/2EEx ia II C T4Tamb = -40° to +65°CBASEEFAEx91C2069Umax:in = 28 VDC Wmax:in = 1.3 WImas:in = 394 mADCCeq = 0 Leq = 0Serial no: UI:A division of Saab Marine Electronics ABFor intrinsically safe circuits onlyData Acquisition Unit Type DAU 2130Hazardous Location Class I Gorup Cand D. Temperature Code T4. The deviceprovides intrinsically safe outputs.See control drawing 9150 057-901Warning: any substitution of any componentsmay impair intrinsic safety.See service manualAmbient temperature -40° to +65°CListed 9390ULExMADE IN SWEDEN©Figure 7.2 shows the JB 12 Junction Box.
Saab TankRadar L/229US Version. Seventh edition, June 1995Installation Manual7.3 Junction Box JB 16 for Connection to RTG and Independent DAUThe JB 16 is an EEx "e" approved junction box, used for connectingpower and TRL/2 Bus to the RTG and the Independent DAU. Itcontains 16 terminals, a flexible hose for the cabling to the RTG orDAU, a mounting plate and various holes for glands from PG16-21. Four glands are included for cable diameters 8-18 mm.7.4 Junction Box JB 36 for Connection of Temperature SensorsW11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"~2 m wires withprotective hoseIndependentDAUTH6 pcs PG 21JB 16 forRelay OutputSignalPower 230/115 V~2 m wireswithprotectivehoseJB 16JB 16Saab Tank ControlTankRadar L/2EEx ia II C T4Tamb = -40° to +65°CBASEEFAEx91C2069Umax:in = 28 VDC Wmax:in = 1.3 WImas:in = 394 mADCCeq = 0 Leq = 0Hazardous Location Class I Group A, B, Cand D. Temperature Code T4.Intrinsically safe for use in connectionwith Radar Unit TH 2000- TH 2014.See control drawing 9150 057-901Warning: any substitution of componentsmay impair intrinsic safetySee service manualAmbient temperature -40° to +65°CSerial no: UI:A division of Saab Marine Electronics ABFor intrinsically safe circuits onlyData Acquisition Unit Type DAU 2100Listed 9390ULExMADE IN SWEDEN©Figure 7.3 showsthe JB 16 junctionBox.The JB 36 is used for the intrinsically safe connection of up to 14temperature sensors to a DAU.8 Connection to a Plant Host Computer (Plant DCS)DAU2 pcs PG 211 pc PG 16TempsensorPt100 - up to 12 sensorsCu100 - up to 14 sensorsCableSaab Tank ControlTankRadar L/2EEx ia II C T4Tamb = -40° to +65°CBASEEFAEx91C2069Umax:in = 28 VDC Wmax:in = 1.3 WImas:in = 394 mADCCeq = 0 Leq = 0Serial no: UI:A division of Saab Marine Electronics ABFor intrinsically safe circuits onlyData Acquisition Unit Type DAU 2130Hazardous Location Class I Gorup Cand D. Temperature Code T4. The deviceprovides intrinsically safe outputs.See control drawing 9150 057-901Warning: any substitution of any componentsmay impair intrinsic safety.See service manualAmbient temperature -40° to +65°CListed 9390ULExMADE IN SWEDEN©JB 36DAU2 pcs PG 211 pc PG 16TempsensorPt100 - up to 12 sensorsCu100 - up to 14 sensorsCableSaab Tank ControlTankRadar L/2EEx ia II C T4Tamb = -40° to +65°CBASEEFAEx91C2069Umax:in = 28 VDC Wmax:in = 1.3 WImas:in = 394 mADCCeq = 0 Leq = 0Serial no: UI:A division of Saab Marine Electronics ABFor intrinsically safe circuits onlyData Acquisition Unit Type DAU 2130Hazardous Location Class I Gorup Cand D. Temperature Code T4. The deviceprovides intrinsically safe outputs.See control drawing 9150 057-901Warning: any substitution of any componentsmay impair intrinsic safety.See service manualAmbient temperature -40° to +65°CListed 9390ULExMADE IN SWEDEN©JB 36Figure 7.4 showstwo alternativeconnections of theJB 16 Junction Box.
30Saab TankRadar L/2US Version. Seventh edition, June 1995Installation ManualA host computer can be connected either to a PC with OPI Soft-ware or directly to the Field Communication Units (FCUs).The TRL/2 system can be connected to all major DCS systems,such as Foxboro, Honeywell, Rosemount and Yokogawa. Newinterfaces can be developed on request. For a complete list of theavailable interfaces, please contact Saab Tank Control or one of itsrepresentatives.8.1 Connect to the FCU for Quick UpdatesWhen a host computer is connected to one or several FCUs, mea-sured data such as level, average temperature, pressure, etc. can betransferred to the host system. If the host system has inventoryfunctions, a connection directly to the FCUs is recommended.8.2 Connect to OPI/2 for Inventory DataWhen a host computer is connected to the OPI/2, calculated datasuch as volume, mass and density can be communicated in addi-tion to the measured data mentioned in chapter 8.1 above.9 Installation ScheduleFCUOperator'sInterfaceTRL/2 Group BusFCUMeasured data:Level, Temperature, Pressure, etc.Calculated data:Volume, Mass, Density, etc.FBMFBM Measured data:Level, Temperature, Pressure, etc.0000.200CancelValue EntryEnter New TankTank1Value Hi Lim Lo Lim HH Lim LL LimTemp AvgLevelDelay HystTemp AvgLevelPressurePressureLeak LimitEnableAutoAutoAuto18.000120.02.02.00080.00.020.000 1.0005.00.50.200Figure 8.1 shows two different ways of connecting a host computer to the TRL/2 system.
Saab TankRadar L/231US Version. Seventh edition, June 1995Installation Manual1. Customer receives the Installation Manual with the RequiredSystem Information Form.2. The completely filled in Required System Information Form,tank farm layout drawings and cabling drawings are sent toSaab Tank Control representative 1-3 months prior to deliv-ery, depending on system size.3. The Installation drawings are reviewed and approved bySaab Tank Control or Saab Tank Control representative.Allow approximately 2 weeks for review and return.4. Inspection at Saab Tank Control before delivery (when re-quested).5. Customer receives and installs the TRL/2 System accordingto the Installation Manual.6. Data sheets are completed and a system configuration chartare made by the customer as a preparation for the start up ofthe system. See Service Manual for instructions.7. System is started up by customer (after completed training)or a Saab Tank Control Representative according to ServiceManual.8. Send Commissioning Check List to Saab Tank Control.
32Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual10 Requirements on the Installation of the Radar TankGaugesTo achieve precise and trouble free measurement, it is very impor-tant to mount the Radar Tank Gauge correctly on the tank.Please note that if an ullage plug is required, it has to be installedseparately as there is no ullage plug on the Horn Antenna Gaugeor the Parabolic Antenna Gauge.Note: Please see the installation drawings for more information. There isa list of drawings in chapter 13.10.1 Requirements for the Horn Antenna Gauge, RTG 2920The Horn Antenna Gauge, RTG 2920, must be installed so thatthere are no pipes or other obstacles that could prevent the radarbeam to reach the bottom unobstructed. Please refer also to themechanical installation drawing for more information on theinstallation requirements of the Horn Antenna Gauge.See installation drawing for requirements on service space.Note: Levels closer than approximately 850 mm from the flange, cannotbe measured with the highest accuracy.10.1.1 Free Space RequirementThe radar beam spreads over 30°. There are two flanges availablefor the Horn Antenna Gauge. One inclines the gauge 4° and theother is horizontal. See installation drawing for flange dimensions.If the wall would intrude into the 30° radar beam with a verticalantenna axis, the 4° flange has to be used so that the radar beam isAntennaaxisTankwallVerticalplumbline4° ± 1°30° radarbeamAntennaaxisTankwallVerticalplumbline30° radarbeamFigure 10.1 showsthe free space re-quirements for theHorn AntennaGauge.
Saab TankRadar L/233US Version. Seventh edition, June 1995Installation Manualdirected away from the wall. This inclination is necessary to en-sure maximum accuracy.If the wall does not intrude into the 30° radar beam when theantenna axis is vertical, the horizontal flange can be used.For special cases, where the maximum accuracy is not necessary,the horizontal flange can be used even when the wall intrudes intothe radar beam. In doubtful cases, please contact Saab Tank Con-trol or one of its representatives.10.1.2 Socket RequirementMaximum height of socket is 330 mm.Socketheightmax.330 mmFigure 10.2.
34Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual10.2 Requirements for Parabolic Antenna Gauge, RTG 2930Please refer also to the mechanical installation drawing for moreinformation on the installation requirements for the ParabolicAntenna Gauge.See also installation drawing for requirements on service space.10.2.1 Inclination of the Parabolic Antenna GaugeThe radar beam should be directed 1.5° towards the tank center.Generally an Inclination Device must be used to ensure the correctangle of the gauge. However, for products with high condensa-tion, like bitumen/asphalt applications, the radar beam should bedirected vertically without any inclination towards the tank cen-ter.When the Inclination Device is used the plane of the cover is al-lowed to lean a maximum of 5.5° away from the tank wall and amaximum of 2.5° towards the tank wall. It must also be horizontalwithin ± 4° along the tank wall. See figure 10.3.If the plane of the cover has an inclination of 1°-2° away from thetank wall and is horizontal within 1° along the wall then the Para-bolic Antenna Gauge can be directly mounted on the cover with-out the use of the Inclination Device. See figure 10.3.Figure 10.3 shows the requirements on the flange for RTG 2930 with and without the Inclina-tion Device.± 4 ° MAXHORIZONTAL2.5° MAXTANK WALLHORIZONTAL5.5° MAXWith Inclination DeviceTANK WALLHORIZONTAL1 ° - 2 °±1° MAXWithout Inclination Device
Saab TankRadar L/235US Version. Seventh edition, June 1995Installation Manual10.2.2 Free Space RequirementThe radar beam of the Parabolic Antenna Gauge is 10° wide. Ob-stacles (construction bars, pipes larger than Ø 2", etc.) within theradar beam are generally not accepted, as these can give a disturb-ing echo, see figure 10.11. However, in most cases, a smooth tankwall or heating coils can be accepted in the radar beam, since theinterference from these can be regarded as small. For evaluationcontact Saab Tank Control.Verticalplumb lineFreepassage5°Antennaaxis1.5°5°Figure 10.2 shows the free space requirements for RTG 2930.
36Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual10.2.3 Flange RequirementsThe Parabolic Antenna Gauge can mounted on a welding neckflange that is welded to the cover or fixed to the cover with eightM16-stud screws welded onto the cover.The dimensions of the welding neck flange are stated on the in-stallation drawing for RTG 2930, see list of drawings in chapter 13.See figure 10.5.Ullage plugfor hand dipping.Welding NeckFlangeCoverHole Ø 145 mm mustbe made for WeldingNeck FlangeFigure 10.5 shows a welding neck flange for RTG 2930.If the Parabolic Antenna Gauge is mounted with stud screwsdirectly onto the cover then the surface for the gasket must besmooth in order to provide a good sealing. See figure 10.6. The topof the cover must have a 145 mm diameter hole through which theantenna is mounted. It must be possible to remove the cover wheninstalling the antenna. Refer to installation drawing for manufac-turing of cover, see list of drawings in chapter 13.Ø 145 mm M16 (8X)Sealing surfacemust be smooth.Ullage plugfor hand dipping.CoverFigure 10.6. The gauge can be mounted on a manhole cover.10.2.4 New TanksAt new installations the distances from the tank wall to the an-tenna axis should be 0.8 m or larger.
Saab TankRadar L/237US Version. Seventh edition, June 1995Installation Manual10.2.5 Socket RequirementsWhen using a Ø 20" socket the height of the socket must not ex-ceed 0.6 m.If a socket with a larger diameter is used then the height can alsobe larger. In this case there must be a free passage for the radarbeam within a 5° angle from the edge of the Parabolic Reflector tothe bottom end of the socket. See figure 10.7.Note: The distance from the top of the customer’s flange to the maximumproduct surface should not be less than 1.0 m. The highest accuracycannot be maintained at distances less than 1.0 m.5° Min5° MinVerticalPlumb LineØ 455 mmLarger thanØ 20"Socketheightmax0.6 mMin 1.0 mto productsurfaceMax100 mmBottom of flangeFigure 10.7 shows the requirements on the socket to RTG 2930.
38Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual10.3 Requirements for the Still Pipe Gauge, RTG 2940Please refer also to the mechanical installation drawing for moreinformation on the installation requirements.10.3.1 Still Pipe RequirementsThe Still Pipe Gauge fits 6", 8", 10" and 12" flanges and pipes. Thisadaption is accomplished by selecting a suitable Transition Cone.The gauge has a meeting flange for sealing of the tank.Note: The gap between the Transition Cone and the still pipe must not belarger than 4 mm anywhere along the lower end of the Transition Cone.Table 10.1 shows the wide range of schedules and pipe innerdiameters that the Transition Cones can be mounted in.The still pipe must be vertical within 0.3° (0.1 m over 20 m).SCH 20 S SCH 40 SSCH 20 SSCH 20 SSCH 20 SSCH 80 SSCH 40 SSCH 40 S8"10"12"6"Main PipeDiameterPipe Schedule Pipe Inner DiameterFrom From (mm)To To (mm)Ø 156.3 Ø 154.1Ø 206.3Ø 260.3Ø 311.1Ø 193,7Ø 254.5Ø 304.9Tables 10.1 shows the pipe schedules and the maximum area of the holes.Note: If the Still Pipe Gauge has to be mounted on a pipe with a scheduleor an inner diameter that is not included in the table above, then pleasecontact Saab Tank Control or the Saab Tank Control representative.10.3.2 Flange RequirementsThe Still Pipe Gauge fits flanges of sizes 6", 8", 10" and 12". Thegauge has a meeting flange for sealing of the tank. The flangemust be horizontal within ±2°.±2° MAXTANK WALLFigure 10.8. The flange must be horizontal within ±2°.
Saab TankRadar L/239US Version. Seventh edition, June 1995Installation Manual10.3.3 New TanksWhen constructing new tanks, an 8" still pipe or larger is recom-mended. This is especially relevant in tanks with sticky, viscousproducts. Before manufacturing a new still pipe, we recommendthat you contact the Project Department at Saab Tank Control foradvice. See also drawing with recommendations for still pipedimensions, see list of drawings in chapter 13.For highest performance, the total area of the slots or holes in thestill pipe must not exceed the values shown in table 10.2 below.The area in the table is the total area of the holes over the entirelength of the pipe, regardless of its length. In some cases it is pos-sible to allow a larger area of the holes in the still pipe, than thearea stated in table 10.2. When the limits are exceeded, pleasecontact Saab Tank Control for advice.Tables 10.2 shows the maximum area of the slots or holes.Pipe Dimension 6" 8" 10" 12"Max Area ofSlots or Holes 0.03 m 0.12 m 0.40 m 1.00 m222210.3.3 Service SpaceSee installation drawing for requirements on the service space. It isnecessary to have this free space when installing the gauge, whendoing service on it and when hand dipping or taking samples. Theheight of the free space requirement depends on which TransitionCone that is used. The larger Transition Cones require higher freespace.
40Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual10.4 Requirements for the LPG/LNG Gauge, RTG 2960The LPG/LNG Gauge fits to a 6" flange and requires a still pipefor measurement.Please refer to the mechanical installation drawing for more de-tailed information of the requirements on the installation of theLPG/LNG Gauge.10.4.1 Temperature and Pressure MeasurementA prerequisite for high accuracy level-measurement is that tem-perature and pressure measurements are made. This can be ac-complished in some different ways.• An Independent DAU can interface both pressure sensorsand temperature sensors.• A Current Loop Card in the Transmitter Head to connect thepressure sensor and a Slave Data Acquisition Unit for thetemperature measurement.10.4.2 Still PipeA still pipe must be installed before the gauge is installed. The stillpipe is customer supplied and should be manufactured accordingto the drawings specified in chapter 13.Either a steel pipe with an inner diameter of 100 mm and 2-3 mmwall thickness or a 4" SCH 10 stainless steel pipe can be used.Specify the type of pipe in the Required System Information Form.The still pipe must be vertical to within ±0.5°. The customer flangemust be horizontal within ±1°.10.4.3 References in Still PipeThe still pipe is made with a number of holes along the length ofit. Some of these holes are used to mount the Reference Pins andthe Reflector Plug (if included).The Reflector Plug is used for calibration of the gauge. The Refer-ence Pins provide verification of the measurement when the tankis pressurized. The other holes provide pressure equalization sothat the level is the same on the inside as on the outside of thepipe. These holes can be chosen to 20 mm or 3/4". All holes mustbe placed along a line on one side of the pipe. The direction of theline, along which the lines are located, must be marked clearly onthe tank flange and customer flange.There are two systems for references in the still pipe:- One Reference Pin at the top of the still pipe and a ReflectorPlug at the bottom of the pipe.- Two or three reference pins installed at the top, the bottomand the middle of the pipe. This system is used when it is notpossible to have an epoxy Reflector Plug in the tank.
Saab TankRadar L/241US Version. Seventh edition, June 1995Installation Manual10.4.4 System with Reference Pin and Reflector PlugAt the top of the pipe there is a reference pin and at the bottomthere is a reference plug made from epoxy resin.Note: If the products that will be stored in the tank are not compatiblewith epoxy resin, the system with two or three Reference Pins should beused instead, see chapter 10.4.5.See installation drawings for information on where to place thereferences in the still pipe. Enclosed with reference pin and bottomplug are instructions on how to install these.10.4.5 System with Reference Pins OnlySaab Tank Control delivers three Reference Pins to each RadarTank Gauge and they have to be mounted in the still pipe before itis lowered into the tank. For more information please refer to theinstallation drawings, see List of Drawings in chapter 8.Position the holes for the Reference Pins so that the top pin islocated at approximately 95% of the total tank height but at least0.8 m below the flange of the still pipe. Place the second pin atapproximately 50% level.Place the lowest pin at approximately 20 % of the tank height butat least 0.8 m above the lower end of the pipe.On tanks with tank heights of less than 7 m, only the top andbottom reference pins are used.10.4.6 Extension Pipe for Minimum DistanceThe Radar Tank Gauge should be placed so that there is always800 mm or more between the Closing and the maximum productlevel. If the tank is filled completely, an extension pipe can bemounted to raise the Radar Tank Gauge so that it measures cor-rectly all the way up to the maximum level. See figure 10.9.W11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"Min 800mm toproductsurfaceFigure 10.9 shows an extension pipe.
42Saab TankRadar L/2US Version. Seventh edition, June 1995Installation ManualW11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"Waveguide UnitTransmitterHeadM6 stopscrew4. Carefully enter the Horn and FlangeAssembly into the nozzle. Tightenthe flange onto the customer’s flangeusing customer supplied screws andnuts.Check that the socket height is lessthan 330 mm.Cone and flangeassemblyCustomer'sflangeCustomer'sgasketSpringSleeve1. Check that all parts and tools areavailable before carrying them up tothe tank top.2. Mount the Spring Sleeve into thebaser of the Transmitter Head. Turnthe Spring Sleeve so that it fits intoone of the notches.3. Mount the Waveguide Unit into thebase of the Transmitter Head. On oneend of the Waveguide Unit there aretwo screws with washers fitted.Mount the Waveguide Unit with thisend first into the base of the Trans-mitter Head. Enter the stop screwsand tighten them.11 Mechanical Installation of the Radar Tank GaugesPlease refer also to the mechanical installation drawings for moreinformation. A list of the drawings is presented in chapter 13.11.1 Installation of Horn Antenna Gauge, RTG 2920Note: When determining the dimensions for conduits (if used), makenote that the Horn Antenna Gauge may be inclined 4° towards the centerof the tank. See figure 11.7. Use flexible conduits close to the Radar TankGauge.Follow this step by step instruction when installing the ConeAntenna Gauge, RTG 2920
Saab TankRadar L/243US Version. Seventh edition, June 1995Installation Manual5. Mount the Transmitter Head ontothe flange. Fit and tighten the fourM10 screws with washers.6. Mount the Weather Protection Hoodand secure with locking pins.W11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"TransmitterHeadFour screwsand washersMount WeatherProtection Hoodand secure withlocking pinsMountingpinsW11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"
44Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual11.2 Installation of the Parabolic Antenna Gauge, RTG 2930Follow this step by step instruction when installing the ParabolicAntenna Gauge.1. Check that all parts and tools are available before carryingthem up to the tank top.Customermanhole coverInclinationDeviceWelding neckflange(customer supply)GasketsW11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"ClosingTransmitterHeadAntennafeederFour M10nutsTwo O-rings3. Mount the Waveguide Unit into thebase of the Transmitter Head. On oneend of the Waveguide Unit there aretwo screws with washers fitted.Mount the Waveguide Unit with thisend first into the base of the Trans-mitter Head. Enter the stop screwsand tighten them.On the Closing there are two guidepins on one sided and only one onthe other. Fit the Transmitter Head tothe side of the Closing that has twoguide pins with four M10 nuts andwashers. These parts can bepreassembled at a more convenientlocation than the tank top.4. If the Inclination Device is used thencheck that the gaskets are correctlyapplied on the Angular Rings.Mount the Angular Rings onto theflange or manhole cover.5. Check that the two O-rings areplaced in their separate grooves onthe top surface of the AntennaFeeder. Mount the Antenna Feeder tothe Closing, entering the guide pininto its corresponding hole. Fit thefour nuts and tighten.SpringSleeve2. Mount the Spring Sleeve into thebaser of the Transmitter Head. Turnthe Spring Sleeve so that it fits intoone of the notches.W11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"Waveguide UnitTransmitterHeadM6 stopscrewClosingFour M10nuts andwashersFour M10stud screws Two guide pinsOne guide pin
Saab TankRadar L/245US Version. Seventh edition, June 1995Installation Manual6. Carefully mount the TransmitterHead with the Closing and AntennaFeeder onto the flange and direct theTransmitter Head so that one of theridges which are cast into the SafetyEnclosure is pointed to the tankcenter.Fit eight M16 or 3/4" screws andtighten them by hand. These screwsare customer supplied.ClosingInclinationDeviceM16 or 3/4" screws(customer supply)M16 or 3/4" nuts(customer supply)W11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"TransmitterHeadTank centerTankRidgesTransmitterHeadDirect ridges onTransmitterHead towardtank centerwithin ±2°AntennafeederThree M6screwsParabolicreflector7. Open the manhole cover. Fit theParabolic Reflector onto the AntennaFeeder. Fit and tighten the threescrews.
46Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual8. Replace the manhole cover. Adjustthe inclination of the Gauge, so thatthe antenna axis points 1.5° to thetank center, using the InclinationDevice. Tighten the eight screws forthe Closing.Note: For bitumen tanks, the gaugeshould be mounted with 0° inclination.Tank centerPlumb lineIncline 1.5°towardstank centerMount WeatherProtection Hoodand secure withlocking pinsMountingpinsW11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"9. Fit the Weather Protection Hood ontothe two pins of the TransmitterHead.
Saab TankRadar L/247US Version. Seventh edition, June 1995Installation Manual11.3 Installation of the Still Pipe Gauge, RTG 2940Note: If there is no flange on the still pipe a clamp flange must bemounted.Follow this step by step instruction when installing the Still PipeGauge.1. Check that all parts and tools are available before carryingthem up to the tank top.2. Enter the Cone into the still pipe to make sure it fits. Maxi-mum gap between the Cone and the pipe is 4 mm.FlangeO-RingConeFlangeM16 screw andwasherSpherical washersO-RingStandFour screwsFlangeConeStandM16-screwwithsphericalwashers3. Mount the O-ring into the flange.4. Press the Flange onto the Cone. Usemanual force only. If there is muchresistance, try putting some greaseon the O-ring.5. Place the M16 screw with a washerin the Stand. Fit the spherical wash-ers onto the screw and secure thesewashers by mounting the small O-ring under the washers. This O-ringcan be left on when the Stand ismounted onto the flange.6. Mount the Stand onto the Cone andtighten the four screws.
48Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual7. Place a customer supplied gasket onthe flange of the still pipe.8. Mount the assembly into the stillpipe. Use only manual force. Toomuch force can damage the Cone.Mount customer supplied screwsand nuts and tighten. Make sure theCone is centered in the still pipe. Fitthe M16-nut and tighten.M16 nutandwasherFlangeConeStandStill pipeCustomer´sgasketO-RingWaveguideUnitTransmitter HeadFour M10 nutsand washersTransmitterHeadStandCablespointingdownNote:Guidepins10. Slide the Waveguide Unit into theTransmitter Head. It can only beentered in one way.11. Mount the Transmitter Head ontothe Stand with its cable connectionspointing down. Be careful not todrop the Waveguide Unit as it is notin i fixed position. Check that theguide pins on the Stand enter theholes on the base of the TransmitterHead properly. Fit and tighten theM10 nuts.12. The Waveguide Unit will not be in afixed position until the TransmitterHead has been tightened to theStand.SpringSleeve9. Mount the Spring Sleeve into thebaser of the Transmitter Head. Turnthe Spring Sleeve so that it fits intoone of the notches.
Saab TankRadar L/249US Version. Seventh edition, June 1995Installation Manual13. Fit the Waveguide Connection intothe Cone. It must be firmly presseddown so that there is a well definedsnap as the lower end fits onto theO-ring of the Cone. Tighten the nutonto the thread of the WaveguideUnit by hand.Mount the ground wire onto theStand.WaveguideConnectionBraidedgroundwireNote:Press until awell definedsnap.Tighten by handSelf tappingscrew2 x M6 StopscrewsNote: Tighten topscrew firstMount WeatherProtection Hoodand secure withlocking pinsFit the twomounting pinsfor the WeatherProtection Hood14. Secure the Waveguide Unit by tight-ening two stop screws into the baseof the Transmitter Head. Tighten thetop screw first. Fit the two mountingpins onto the Stand and mount theWeather Protection Hood onto thefour pins.
50Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual11.4 Installation of the LPG/LNG Gauge, RTG 2960Follow this step by step instruction when installing the LPG/LNGGauge.Note: There must be a clear mark on the customer flange to show thedirection of the reference pins in the still pipe. Carefully check that theClosing is mounted in the appropriate angle relative to that mark.See also the installation drawings. See chapter 13 for list of draw-ings.The Lower Flange, the ball valve and the Closing arepreassembled and delivered as one unit.1. Check that all parts and tools are available before carryingthem to the tank top.2. Install the still pipe according to mechanical installationdrawing 9150057-986 or 9150057-987.3. Enter the Cone into the still pipe to make sure it fits. Maxi-mum gap between the Cone and the pipe is 2 mm.4. Mount the Pipe Cone onto the Clos-ing using four M6 Allen head screws.Be careful when handling the Clos-ing with the Pipe Cone mountedonto it as it is very important that thePipe Cone is not deformed.Do not remove the yellow protectivecap.PressuretransducerLowerFlangeBallValveFour M6screwsClosingPipeConeDo not removethis protective capSpringSleeve5. Mount the Spring Sleeve into thebaser of the Transmitter Head. Turnthe Spring Sleeve so that it fits intoone of the notches.
Saab TankRadar L/251US Version. Seventh edition, June 1995Installation Manual6. Put the Transmitter Head upsidedown on a flat surface and fit theWaveguide Unit into the base.Waveguide UnitTransmitter Head7. Fit the Housing to the TransmitterHead. Carefully check that the GuidePins enter their respective holes andturn the lever of the Waveguide Unitso that it fits into the correspondingrecess in the Housing. Tighten theHousing to the base of the Transmit-ter Head using four M10 screws andwashers.HousingGuide pinsWaveguideUnit4 M10 screwsand washers8. Place customer supplied gasket oncustomer's flange. Carefully fit thePipe Cone into the still pipe andtighten the Closing onto the 6" flangeusing customer supplied screws andnuts. Direct the Closing so that themarking hole aligns with the notchor mark on the customer flange.9. The tank is now sealed and can, asfar as Saab Tank Control equipmentis concerned, be pressurized.CustomerFlangeReferencePinAlign!Align!Notch indicatingthe direction ofthe ReferencePins
52Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual10. Remove the yellow protection cap,but do not remove the rubber cone.Fit the Transmitter Head and theHousing onto the Lower Flange.Carefully check that the Guide Pinsenter their respective holes. Tightenusing four M10 screws and washers.Guide pinsLowerFlange4 M10 screwsand washersW11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"Do notremovethis cone!11. Fit the Weather Protection Hood ontothe mounting pins of the TransmitterHead.Mount WeatherProtection Hoodand secure withlocking pinsMountingpinsW11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"
Saab TankRadar L/253US Version. Seventh edition, June 1995Installation Manual12 Electrical InstallationWarning! Isolate and terminate ends of unused wires. The intrinsicsafety may be jeopardized if any cable ends are hanging loose. Use certi-fied battery operated instruments only. Use Saab Tank Control originalspare parts only.Note: For all electrical installation, please see the instructions in theelectrical installation drawings. See list of drawings in chapter 13.12.1 Cabling for Power SupplyThe cables used for the power supply connection must be suitablefor the supply voltage in question and also approved for use inhazardous area where it is applicable. In the USA, for example,explosion proof conduits must be used in the vicinity of the tank.The wire areas must be selected not to cause too much voltagedrop on the way to the RTGs, the DAUs, the FCUs, etc.Each Radar Tank Gauge and Field Communication Unit have aswitch for voltage selection that can be set to either 115 VAC or 230VAC. Check that the switch is set in the right position beforepower is connected. See chapter 3.1.3 and 6.3.The selection of 115 or 230 VAC power supply for the IndependentData Acquisition Unit is made by connecting a strap on one of theprinted circuit boards in the flameproof enclosure. See chapter4.7.1. Maximum power consumption is 10 W.The Slave Data Acquisition Unit receives its power via the localline from the associated Radar Tank Gauge.The power supply connection to the Radar Tank Gauge should bemade with wires according to table 12.1 below. The table showsthe voltage drop at various cable lengths and wire areas at themaximum power consumption of 80 W. The figures shaded ingrey indicate combinations of lengths and areas that might resultin too high voltage drops.1.5 mm(AWG 16 orsimilar)0.75 mm(AWG 18 orsimilar)1.5 mm(AWG 16 orsimilar)115 V 230 VCable Length 0.75 mm(AWG 18 orsimilar)100 m 330 ft. 3.1 V 1.6 V 1.6 V 0.8 V200 m 660 ft. 3.2 V 3.2 V 1.6 V500 m 1640 ft. 4 V22 226.3 V16 V 8 V 8 VTable 12.1. Grey areas show too high voltage drop.
54Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual12.2 Cabling for TRL/2 BusThe TRL/2 bus requires a twisted and shielded pair with an areaof min 0.50 mm2 (AWG 20 or similar). The maximum length of theTRL/2 bus is 4 km. The TRL/2 Field Bus can normally use exist-ing cables in the tank area.Note: Wherever two TRL/2 Buses run alongside each other, sharing thesame cable or conduit tube, individual shielding is mandatory in order toavoid crosstalk.12.3 GroundingAccording to national code of practice the Transmitter Head orData Acquisition Unit can be grounded by connecting an exterior4 mm2 wire to a potential equalization network, or, if no suchexists, to the tank structure. A grounding lug is available on theenclosure for this purpose.Note: When the enclosure is connected to a potential equalizing networkor to the tank structure, the protective ground with the power supplymust not be connected.If the enclosure is not externally grounded, the protective ground withthe power supply should be connected.12.4 Electrical Installation of the Radar Tank Gauge, RTG12.4.1 The Non-Intrinsically Safe Connection (W11)The power connection is made with two wires. The TRL/2 FieldBus connection is made with a single pair of shielded twistedwires.A Junction Box is required for the non-intrinsically safe connectionof the power supply and the TRL/2 Field Bus. The junction boxcan either be customer supplied or supplied by Saab Tank Controlas an option, see chapter 7. The three wires in the cable output thatare not used must be properly insulated and terminated in thejunction box.12.4.2 The Intrinsically Safe Connection (W12)See chapter 3.1.2 for information on number of cables in lead seal.If the distance between the Transmitter Head and the Slave DataAcquisition Unit is longer than 2.0 m, a junction box must be usedto connect an extension cable. This extension cable must not belonger than 50 m. For safety reasons the ends of the unused wiresmust be properly insulated and terminated. The junction box caneither be customer supplied or supplied by Saab Tank Control asan option, see chapter 7.A flexible protective hose for the wires is delivered with the Bar-rier Unit or the Current Loop Card, or with the Transmitter Headif the units have been factory installed. For reasons of electromag-
Saab TankRadar L/255US Version. Seventh edition, June 1995Installation Manualnetic interference and compatibility it is very important that acontinuous metal shield is covering the wires between the Trans-mitter Head and the Slave Data Acquisition Unit. If an extensioncable is used, both the cable and the junction box must providegood shielding.12.5 Electrical Installation of the Data Acquisition Unit, DAUInstructions for the connection of the Data Acquisition Unit isgiven on the inside of its cover.12.5.1 Electrical Installation of the Slave DAU, DAU 2100The connection to the Radar Tank Gauge is done according to theinstructions in chapter 12.4.2 above.Either Pt 100 (spot element) or Cu 100 (averaging sensor) tempera-ture sensors can be used. If the sensors are connected with com-mon return wires then jumpers must be connected in the DataAcquisition Unit terminals.Intrinsically safe connection of the temperature sensors, the RTDs,is made with n + 2 wires for an n-element spot or averaging sen-sor. There are spot elements with three wires for each element.12.5.2 Electrical Installation of the Independent DAU, 2130The connection of the power supply and the TRL/2 Field Bus ismade through the lead seal W21.A Junction Box is required for the non-intrinsically safe connectionof the power supply, the TRL/2 Field Bus and the relay outputs.The junction box can either be customer supplied or supplied bySaab Tank Control as an option, see chapter 7.Temperature sensors are connected in the same way as for theSlave Data Acquisition Unit which is described above in chapter12.5.1.Intrinsically safe 4-20 mA transducers can be connected to thecurrent inputs with two wires for each sensor. Up to four trans-ducers can be connected to each Data Acquisition Unit but theinput multiplexer can only bias one at a time. These connectionsare normally used for pressure sensors or interface probes.Eight intrinsically safe digital or frequency inputs are provided.Each input requires two wires.Four non-intrinsically safe relay outputs are available with twowires per relay. This option has to be specified in the RequiredSystem Information Form. The relays are connected through thelead seal W22.
56Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual12.6 Electrical Installation of the Field Bus Modem, FBM 2170The Field Bus Modem is delivered, as standard, with a 3 m longcable for the RS-232C connection to the PC. The TRL/2 bus con-nection is made with a twisted pair of wires. The Field Bus Mo-dem must not be used in a hazardous zone as it is not explosionprotected. The Field Bus Modem is powered from an AC/DCconverter (6-15 V, 10 mA) supplied by Saab Tank Control. In somerare cases the Field Bus Modem can be powered from the RS-232Cport of the PC.12.7 Electrical Installation of the Field Communication Unit,FCU 2160The FCU can be connected to the PC either directly via RS-232C orvia a TRL/2 Group Bus.For the connection of the TRL/2 Bus, see chapter 12.2.The RS-232C connection can be made with 3 wires from the PC tothe Field Communication Unit. The area must be at least 0.25 mm2(AWG 24 or similar). The maximum length of the RS-232C connec-tion is 30 m.
Saab TankRadar L/257US Version. Seventh edition, June 1995Installation Manual13 List of Drawings13.1 Mechanical Installation9150041-958 Reference Pin Installation, RTG 2960 LPG/LNG Gauge9150057-951 Instruction Still Pipe Installation, RTG 2960 (LPG/LNG Gauge)9150057-924 Mechanical Installation, RTG 2940 Still Pipe Gauge9240003-987 Recommended still pipes for Saab TankRadar9150057-982 Mechanical Installation, RTG 2930 Parabolic Antenna Gauge9150066-961 Mechanical Installation, RTG 2920 Horn Antenna Gauge9150057-957 Mechanical installation drawing, RTG 2960 (LPG/LNG Gauge)9150057-958 Mechanical installation drawing, Still Pipe Alt. A, RTG 29609150057-959 Mechanical installation drawing, Still Pipe Alt. B, RTG 29609240002-912 Mechanical Installation Independent DAU, DAU 21309240002-913 Mechanical Installation Slave DAU, DAU 21009240002-914 Mechanical Installation FCU 21609240003-906 Mechanical Installation Temperature Bulb9240003-489 Mechanical Installation Temperature Connection Box13.2 Electrical Installation9240002-902 Electrical Installation FBM - FCU9240002-903 Electrical Installation FBM - Group Bus9240002-904 Electrical Installation FCU - FBM9240002-905 Electrical Installation FCU - RS-2329240002-906 Electrical Installation FCU - Modem9240002-907 Electrical Installation Independent DAU - Cu 1009240002-908 Electrical Installation Independent DAU - Pt 1009240002-909 Electrical Installation Slave DAU - Cu 1009240002-910 Electrical Installation Slave DAU - Pt 1009240002-911 Electrical Installation Radar Tank Gauge9240002-923 Electrical Installation RTG + Current Loops + DAU9240002-924 Electrical Installation RTG + Current Loops + DAU9240002-925 Electrical Installation RTG + Current Loops + Display9240002-930 Electrical Installation RTG + Current Loops + DAU9240002-936 Electrical Installation FCU RS-485 - Host Computer
58Saab TankRadar L/2US Version. Seventh edition, June 1995Installation Manual14 Description of the Required System InformationIn order to be able to correctly configure and assemble the parts ofthe system the Required Information Form must be completed.It is also necessary to provide drawings of the tank farm layoutwith proposed location of Radar Tank Gauges, Data AcquisitionUnits, Field Communication Units, Field Bus Modems, Operator’sInterface etc.The Required System Information Form and the drawings must befilled in and returned to Saab Tank Control or to Saab Tank Con-trol Representative 1-3 months before delivery.When the system is started up all the database constants have tobe programmed into the system. For this purpose the Data Sheetsin the Service Manual should be completed. The completed DataSheets are a great aid when setting up the system using either theOperator’s Interface (OPI) or the Configuration Software (COS).14.1 System ConfigurationEnter how many Field Communication Units, Radar Tank Gauges,Slave Data Acquisition Units and Independent Data AcquisitionUnits that will be connected to the system.Enter power supply as either 115 V or 230 V.14.2 System MasterThe Operator’s Interface software needs at least a 486/33 MHzcomputer. There is a minimum requirement of at least 8 MByteRAM memory for the OPI Software and 12 MByte RAM for theOPI/2 Software. The operating system must be OS/2 of version1.2 Standard Version or higher. It is not a requirement, but it isvery convenient to operate the program with a mouse or someother pointing device.14.3 Plant Host Computer System (Plant DCS)The type and make of the host computer must be entered in thetable. The type of communication and the communication protocolmust be specified. The host computer can be connected directly tothe Field Communication Units or it can be connected to a PC withthe Operator’s Interface. See chapter 8.14.1.3 Tank DataThe tank type, the tank content, its temperature range and itsmaximum pressure has to be filled in. The Tank Reference Heightis the reference height from the Tank Reference Point down to theDatum Level or the tank bottom, whichever that is used as thezero level. The Tank Reference Point should be the ullage plugwhich will be used for hand dipping. The Tank Connection Typehas to be specified as either Horn Antenna, Still Pipe, Parabola or
Saab TankRadar L/259US Version. Seventh edition, June 1995Installation ManualT14T13T12T3T2T1LDDATUMLEVELW11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"Figure 14.1.Installation oftemperaturesensors.LPG/LNG. Enter if an Inclination Device will be used. If there is astill pipe then enter the inner diameter and the type of pipe thatwill be used.Specify to which Field Communication Unit that each tank will beconnected. If there will be a Data Acquisition Unit connected at thetank then specify if it will be a Slave or an Independent DAU andif it will be equipped with a Local Readout LCD Display.The number of digital outputs have to specified and if they are tobe normally ON or normally OFF.The number of temperature sensors and their type (Cu 100 or Pt100) has to be entered. Other inputs can be current inputs, fre-quency inputs or digital inputs. Specify what kind of signal that isread at the input. Please note the heights of the Resistance Tem-perature Detectors in the tables on pages 6-8 in the appendix. Seealso figure 14.1 below.
60Saab TankRadar L/2US Version. Seventh edition, June 1995Installation ManualThis page is intentionally left blank.
Saab TankRadar L/2Appendix-1US Version. Seventh edition, June 1995Required System Information FormCopyright © June 1995.Saab Marine Electronics ABAll constants are defined in the Installation Manual, Chapter 14.Please state all distances in metric units.Installation site: ___________________________________________Total number of tanks:______________________________________Name of person whocompleted this form: _______________________________________In order to be able to correctly configure and assemble the parts ofthe system the Required System Information Form must be filledin.It is also necessary to provide drawings of the tank farm layoutwith proposed location of Radar Tank Gauges, Data AcquisitionUnits, Field Communication Units, Field Bus Modems, Operator’sInterface etc.Note: See chapter 9 in the Installation Manual when completing theform.Required System Information Form
Saab TankRadar L/2Appendix-2US Version. Seventh edition, June 1995Required System Information FormSystem Information:Number of FCU's:Number of RTG's:Number of Slave DAU's:Number of Independent DAU's:PC for OPI or OPI/2 Software:Type and make (manufacturer) of PC:Size of RAM ( OPI: Min 8 MByte, OPI/2: Min 12 MByte):OPI NetworkNumber of servers in networkIf existing network: Type of networkoperating systemNumber of clients in networkPower Supply115 V 230 VConnection to TRL-System:Processor Unit Serial Number:Plant DCS (Plant Host Computer):Type and make (manufacturer) of computer:Communication protocol:Connected to FCU's or toOperator's Interface:Type of communication:
Saab TankRadar L/2Appendix-3US Version. Seventh edition, June 1995Required System Information FormTank DataTankName TankProduct Temp.Min MaxMaxOverPressureTankHeightApprox.RTG Type(2920, -30,-40 or -60)
Saab TankRadar L/2Appendix-4US Version. Seventh edition, June 1995Required System Information FormTank Data (Cont.)TankName If RTG 2940:Size ofSlots/Holes(Ø orWxHin mm)PipeInnerDiam.(mm)Numberof Slots/Holesper meterIf RTG 2960:Pipe InnerDiameter(Markwith X)FlangePressureRatingIf RTG 2920or RTG 2930:Dist. toTank Wall(mm)DIN1004"SCH10SocketHeight(mm)
Saab TankRadar L/2Appendix-5US Version. Seventh edition, June 1995Required System Information FormTank Data (Cont.)TankName LocalReadoutDisplay(Yes/No)NumberofTemp.Sensors:Type ofTemp.Sensors:Inde-pendentor SlaveDAU:OtherInputs: DigitalOutputsNormallyON orOFF:Conn. toFCUname ornumber:Data Acquisition Unit, DAU OptionOption
Saab TankRadar L/2Appendix-6US Version. Seventh edition, June 1995Required System Information FormTank DataSpecific requirements to fulfill FCC rules (Only for US markets)Tank Name Metallic tank(Yes/No)Any permanent openings(Yes/No)Any occasional openings on tank(Yes/No)
Saab TankRadar L/2Appendix-7US Version. Seventh edition, June 1995Required System Information FormTemperature Sensor InstallationT14T13T12T3T2T1LDDATUMLEVELW11W12FORINTRINSICALLYSAFE CIRCUITSONLY"i"
Saab TankRadar L/2Appendix-8US Version. Seventh edition, June 1995Required System Information FormTank NameLDResistance Temperature DetectorsT1 T2 T3 T4 T5 T6 T7Installation of Temperature Sensors (Cont.)
Saab TankRadar L/2Appendix-9US Version. Seventh edition, June 1995Required System Information FormTank NameResistance Temperature DetectorsT8 T9 T10 T11 T12 T13 T14Installation of Temperature Sensors (Cont.)
Saab TankRadar L/2Index 1US Version. Seventh edition, June 1995Installation ManualIndexAAnalog inputs......................................55, 59Angular RingsParabolic Antenna Gauge ...............44Asphalt ..........................................16, 17, 34BBarrier Unit .................................................54Barrier Unit Card .......................................14Barrier Unit Kit...........................................14Bitumen .........................................16, 17, 34BU.................................................................14CCable length................................................54Cable Outputs ............................................13Cable RequirementsPower Supply....................................53TRL/2 Bus .........................................54CLC ..............................................................15ClosingLPG/LNG Gauge .............................50Parabolic Antenna Gauge ...............44Commissioning Check List ......................31Communication .........................................58Communication Ports ...............................25Conduits......................................................42Configuration Software ..............................9COS ................................................................9Cu100...........................................................59Current Loop Card .............................15, 54DData Acquisition Unit .................................9Description ........................................20Database......................................................58Datum Level ...............................................58DAU 2100.............................................22, 55DAU 2130....................................................24DCS .......................................................29, 58Digital inputs..............................................59Digital or frequency inputs ......................55DPS board ...................................................23EElectrical Installation.................................53Data Acquisition Unit ......................55Field Bus Modem .............................56Field Communication Unit .............56Independent DAU............................55List of Drawings ...............................57Radar Tank Gauge............................54Slave DAU .........................................55Electronic Unit............................................13Explosion proof................................... 10, 11Explosion protection .................................10Extension PipeLPG/LNG Gauge .............................41FFBM 2170.........................................9, 24, 56FCM interface boards................................25FCU 2160 ..................................9, 25, 27, 56FCU Enclosure............................................26Field Bus......................................................25Field Bus Modem..................................9, 24Description ........................................24Field Communication Unit..................9, 25Description ........................................25Flame proof.................................................10FlangeParabolic Antenna Gauge ...............36Flange Adapter...........................................47Flange Requirements.................................38Parabolic Antenna Gauge ...............36Flexible conduits ........................................42Free Space RequirementParabolic Antenna Gauge ........32, 35Frequency inputs .......................................59GGround ........................................................54Grounding...................................................54Group Bus ...................................................25
Index 2Saab TankRadar L/2US Version. Seventh edition, June 1995Installation ManualHHazardous area ..........................................10Horn Antenna GaugeDescription ........................................16Installation requirements ................32Host computer.....................................30, 58Housing.......................................................51IInclinationParabolic Antenna Gauge ........34, 46Inclination Device......................................34Parabolic Antenna Gauge ........34, 44Independent DAU ................................9, 20Description ........................................23Inner diameters ..........................................38Installation DataBoth DAUs ........................................22Field Bus Modem .............................24Field Communication Unit .............27Horn Antenna Gauge.......................16Independent DAU............................24LPG/LNG Gauge .............................19Parabolic Antenna Gauge ...............17Slave DAU .........................................22Still Pipe Gauge ................................18Transmitter Head..............................15Installation requirementsCone Antenna Gauge.......................31LPG/LNG Gauge .............................40Parabolic Antenna Gauge ...............34Still Pipe Gauge ................................38Installation Schedule .................................30Intrinsic safety ............................................10Inventory Data ...........................................30JJB 12 .............................................................28JB 16 .............................................................29JB 36 .............................................................29JB 8 ...............................................................28Junction Box.........................................54, 55Junction Boxes ............................................28LLCD-display .................................................9List of Drawings.........................................57Local Readout Display..............................21Local Readout Display (LCD)....................9Low-loss radar mode ................................18LPG/LNG GaugeDescription ........................................19Installation requirements ................40Mechanical Installation....................50MMechanical InstallationHorn Antenna Gauge.......................42List of Drawings ...............................57LPG/LNG Gauge .............................50Parabolic Antenna Gauge ...............44Still Pipe Gauge ................................47Mechanical installation .............................42Metrological Seal........................................15Mouse ..........................................................58NNew TanksParabolic Antenna Gauge ...............36Still Pipe Gauge ................................39OObstacles .....................................................32Operating system.......................................58Operator’s Interface ........................8, 9, 58OPI .................................................................9OS/2.............................................................58PParabolic Antenna GaugeDescription ........................................17Installation requirements ................34Mechanical Installation....................44Parabolic Reflector.....................................45Pipe Cone .............................................50, 51Pipe inner diameter ...................................38Pipe schedule..............................................38Plant Host Computer ...........................8, 29Plant Host Computer System...................58Power SupplyField Connection Unit......................26Independent DAU............................23Radar Tank Gauge............................14Power supply .............................................53
Saab TankRadar L/2Index 3US Version. Seventh edition, June 1995Installation ManualPressure MeasurementLPG/LNG Gauge .............................40Pressure sealingLPG/LNG Gauge .............................19Protocol .......................................................58Pt100 ............................................................59RRadar beamCone Antenna Gauge.......................32Parabolic Antenna Gauge ........35, 37Radar Tank Gauge .......................................9RAM requiremnt........................................58Reference height.........................................58Reference Pins .......................19, 40, 41, 50Reference Plug............................................19Reference resistance...................................21ReferencesLPG/LNG Gauge .............................40Reflector Plug .............................................40Relay ............................................................23Relay outputs .............................................55Relays...........................................................23Required System Information..................58Required System Information Form .......31Resistance Temperature Detectors ..........59RS-232C .......................................................56RS-232C Group Bus ...................................25RTDs ............................................................20RTG ................................................................9RTG 2920 ..............................................16, 42RTG 2930 ..............................................17, 44RTG 2940 ..............................................18, 47RTG 2960 ..............................................19, 50SSafety ...........................................................10Schedule ......................................................38Sealing StripsParabolic Antenna Gauge ...............44Shielding .....................................................55Slave Data Acquisition UnitDescription ........................................22Slave DAU ..................................................20Socket RequirementsHorn Antenna Gauge.......................33Parabolic Antenna Gauge ...............37Still pipe ...............................................40, 51Area of the slots ................................39LPG/LNG Gauge .............................50Still Pipe Gauge..........................................18Description ........................................18Installation requirements ................38Mechanical Installation....................47Still Pipe Requirements.............................38Supply voltage switchData Acquisition Unit ......................23Field Communication Unit .............26Radar Tank Gauge............................14System Configuration ...............................58System Master ............................................58TTank Data ....................................................58Tank Reference Height ..............................58Tank Reference Point.................................58Temperature MeasurementLPG/LNG Gauge .............................40Temperature measurement................20, 21Temperature Range ...................................21Temperature sensors....................20, 55, 59Transition Cone ..........................................38Transmitter Head .......................................12VVoltage drop ...............................................53Voltage selection ........................................53Voltage switch ............................................53WW11 ..............................................................54W12 ..............................................................54Waveguide Connection.............................49Waveguide UnitLPG/LNG Gauge .............................51Parabolic Antenna Gauge ...............44Still Pipe Gauge ................................48Welding neck flange ..................................36Write Inhibit/Enable SwitchDAUs..................................................21Field Connection Unit......................26
Index 4Saab TankRadar L/2US Version. Seventh edition, June 1995Installation ManualNotes:

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