产品型号:X76HVD-4简单介绍X76HVD-4气相输入模块ThemodulefeaturesafrontpanelmountedamberLEDindicatorforsensorfailureandatwo-colorLED,greenforpoweron,turningredtoshowfaultywiring,e.g.short,openorincorrectpolarity.Optionally,acontactorconductivitytypelevelswitchconnectedtothemoduleprovidesindication(redLED)thatthesensorissubmerged.X76HVD-4气相输入模块的详细介绍X76HVD-4气相输入模块VaporInputModule[X76HVD-4]X76HVD-4气相输入模块TheModelX76HVD-4ModuleispartoftheX76LVCandX76LVCSLeakDetectionSystems.Itmeasuresthevaporconcentrationinvadosewells,groundwaterwellsorsecondarycontainedvessels.Themicroprocessorbasedinputmodulemeasuresthesensorresistance,whichisdirectlyproportionaltothevaporconcentrationanddisplaysthelinearizedvaluesinpartspermillion(ppm)viathefrontpanelmounted4?digitLEDdisplay.TheX76HVD-4-2.5Moduleiscalibratedforarangeof0to2,500ppmforproductssuchaswasteoil,diesel,JP-5,etc.TheX76HVD-4-20isusedovertherangeof0to20,000ppmtomeasuregasoline,methanol,benzene,toluene,etc.Eachmodulefeaturesanadjustablesetpointnormallysetfor25%ofthelowerexplosivelevel(LEL)ofthespecificproductmonitored.ThesetpointisadjustedtothedesiredppmreadoutontheLEDdisplaybyafrontpanelmountedpotentiometer.Shouldthevaporconcentrationexceedthesetpoint,aredflashingLEDprovidesvisualalarm,anaudiblealarmisactuatedandatransistorswitchoutputoperates.Thesystem抯commonacknowledgepushbuttonsilencestheaudiblealarm.TheLEDremainsflashinguntilthevaporconcentrationreturnsbelowthesetpointlevel.X76HVD-4气相输入模块ThemodulefeaturesafrontpanelmountedamberLEDindicatorforsensorfailureandatwo-colorLED,greenforpoweron,turningredtoshowfaultywiring,e.g.short,openorincorrectpolarity.Optionally,acontactorconductivitytypelevelswitchconnectedtothemoduleprovidesindication(redLED)thatthesensorissubmerged.)