有毒气体探测器*Continuousdetectionofcombustible,oxygen&toxicgasinexplosionhazardousareawithflameproofstructure*Selfdiagnosisfunctionwithbuilt-inMicroprocessor*Excellentselectivitybyadaptingdetectionprincipleonlyforoxygen&toxicgas*SuperiorperformancefordetectinggasbelowTLV*Multifunctionsandhighqualitywithlowcostofownership*Built-inBacklightLCDdisplay*AutocalibrationandprogramsettingwithmagnetbarandLCDdisplay*4-20mADCoutputsignal*CalibrationandmaintenancebyoneworkerTRANSMITTER&LOCALDISPLAYTYPECOMB.OXYGEN&TOXICGASDETECTORModelGTD-2000SeriesMeasuringgasCombustiblegas(LNG,LPG,H2,Methane,Butane&etc)Toxicgas(O2,CO,CL2,NH3&etc)MeasuringtypeDiffusiontypeMeasuringmethodHotwiresemiconductorcell,Catalyticcell,Thermalconductivitycellsemiconductorcell,ElectrochemicalcellMeasuringrange0~2000ppm,0~100%LEL,0~100%VolRefertoorderinginformationResponsetime<15sec/90%scale<45sec/90%scaleAccuracy±3%/FullscaleParametercontrolsNonintrusivecontrolwithMagnetbar(calibration,maintenance,alarmsetting)Operationmodedisplay1-LED(Power)MeasuringvaluedisplayLCDdisplay(BuiltinBacklight2-Line,8characters)OutputsignalAnalogueoutput:Measuringoutput:4-20mADCMaintenanceoutput:3mADCCalibrationoutput:2mADCFaultoutput:0mADCCable/DistancePower+signalcable:3wire(AboveCVVSB1.5sq)/2,500mmax.Conduitconnection1/2"&3/4"PF,NPT(3/4"PFstandard)Mountingtype2"Polemount,Wallmount,DuctmountOperatingtemperature-20∩~+50∩Operatinghumidity5~99%.RH(non-condensing)Operatingpower18~31VDC(24VDCnormal)/250mAmax.AC110/220V(Option)Dimensions136x166x110(WXHXD)136x176x110(WXHXD)Weight1.5kg2.1kgApprovalFlameprooftype(ExdIICT6))