High Precision Inventory Tank Gauging System

Technical DescriptionMeasured values are communicated on a field busor directly to a PC. In larger systems there are FieldCommunication Units (FCU:s) that collect datafrom separate field buses. In this way both standalonegauges and large systems with severalhundred gauges are economical and have anexcellent performance.The Saab TankRadar Rex system is configured andoperated using the OPC compatible TankMastersoftware package. Its a user-friendly HumanMachine Interface (HMI) software that gives theoperator a good overview and quick access to anymeasured values. The software also provides awide range of inventory and custody transferfunctions such as net standard volumes accordingto API standards, reporting, alarms, graphics,trends etc.A whole range of plant host computer systems,DCS or SCADA systems can be connected to theSaab TankRadar Rex system for display ofmeasured and calculated values. Protocols forcommunication with major suppliers of plant hostcomputers have been developed and certified.TankMaster Rex gauges can also be incorporated inother tank gauging manufacturers’ systems usingthe emulation features.The TankRadar Rex system can include variousintegrated equipment, such as:Installation and commissioning of theTankRadar Rex SystemThe Saab TankRadar Rex system is easily installedby the customer or the customer’s contractor. Nospecial tools are required and all parts can becarried onto the tank roof.Normally existing field cabling is used.There are clear instructions in the InstallationManual and installation drawings. Installation canbe done with the tanks in operation, except forpressurized tanks such as LPG tanks.Commissioning is normally done by a trainedengineer from our local representative, or in somecases by the customer.The TankMaster WinSetup PC software is used toconfigure the system.• Multi-spot temperature sensors.•Water Interface measurement sensorsintegrated with temperature sensors.•Vapor pressure transmitters.• Hydrostatic pressure transmitters.•TankMaster PC workstations in network.• Radio link between TankMaster PCworkstation and Field Communication Unit.• Local data display on the Data AcquisitionUnits or on the Remote Display Units.Rex gauges are installed using existing nozzles and manways.8