Vega VEGABAR 82 Operating Instructions Manual

Also see for VEGABAR 81: Operating instructions Operating instructions Quick setup guide Operating instructions Quick setup guide

Contents

204 MountingVEGABAR 82 • Slave sensor for electronic differential pressure48046-EN-190320Vessel height: 12 m, hydrostatic pressure = 12 m x 1000 kg/m3 x9.81 m/s2 = 117.7 kPa = 1.18 barSuperimposed pressure: 1 barTotal pressure: 1.18 bar + 1 bar = 2.18 barInstrument selectionNominal measuring range Master: 2.5 barNominal measuring range Slave: 1 barTurn Down: 2.5 bar/1.18 bar = 2.1 : 1DataApplication: Level measurementMedium: WaterVessel height: 500 mm, hydrostatic pressure = 0.50 m x 1000 kg/m3 x9.81 m/s2 = 4.9 kPa = 0.049 barSuperimposed pressure: 350 mbar = 0.35 barTotal pressure: 0.049 bar + 0.35 bar = 0.399 barInstrument selectionNominal measuring range Master: 0.4 barNominal measuring range Slave: 0.4 barTurn Down: 0.4 bar /0.049 bar = 8.2 : 1DataApplication: Differential pressure measurementMedium: GasStatic pressure: 0.8 barDifferential pressure on orifice: 50 mbar = 0.050 barTotal pressure: 0.8 bar + 0.05 bar = 0.85 barInstrument selectionNominal measuring range Master: 1 barNominal measuring range Slave: 1 barTurn Down: 1 bar/0.050 bar = 20 : 1The measuring result (level, pressure difference) as well as meas-ured value Slave (static or superimposed pressure) are output by thesensor. Depending on the instrument version, output as 4 … 20 mAsignal or digitally via HART, Profibus PA or Foundation Fieldbus.To reach the Safety Integrity Level (SIL) for the electronic differentialpressure, both instruments must be SIL-qualified.4.4 Level measurementThe master/slave combination is suitable for level measurement in apressurized vesselKeep the following in mind when setting up the measuring system:• Mount the master sensor below the min. levelExample - small vesselExample - orifice inpipelineOutput measured valuesMeasurement setup