TGAS-1021 Series 2-wire Transmitters

Brief introductionTGas-1021 Series Toxic and Harmful Gas Transmitter with two-wire system has embedded microprocessor, it can continuously measure the site gas concentration, and convert the concentration signal into 4 20mA output. It is extensively applied in petroleum, petrochemistry, chemical industry, gas, coal, metallurgy and electric power; safety detection in municipal administration, communication and traffic tunnel construction; electronics, semiconductor industry and other places with poisonous and harmful gases, etc. 1 Infrared collecting tube 2 Display screen 3 Push-key4 Earthing jack 5 Gas chamber of sensor 6 Connection jack7 Remote Main features Quick response speedAutomatic modification of zero driftIntrinsic safety certificationWith infrared remote control, it can be set without opening coverHigh measurement accuracy Technical parameters ParameterCharacteristics DetectionSingle gas detectorOperationPush-key or remote controllerCalibrationUsers can perform linear calibration operationSensorPlug-in electrochemical sensorDisplaySix- segment code liquid crystal digit-display readingReadingDisplay gas composition/concentration after starting up self-checkingOutput signalOutput 16-bit precision 4-20mA current by means of two-wire system, and the output size can be defined by users Working temperature-30°C to 60°C, humidity below 85% (no condensation)Operating voltage24VPrecisionMeasurement error <5%, repeatability <3%Impedance200 ohmMeasurement category and rangeRefer to table of lectotypeService life of sensorPoisonous gas ≥3 years, oxygen ≥2 years, ammonia ≥1 yearPower supply of detectorPower shall be supplied to the detector by safety grid, explosion-proof mark of safety grid: ExiaIICT3 Intrinsic safety parameter of safety grid: Um:250V Uo:28V Io:93V Po:0.65W Lo:2.4mH Co:0.03μF Table of lectotype for detecting gas (part of gas) ModelInstrument descriptionTGas-1021-CO-1000CO detector (range: 0-1000ppm) ex-factory setting current low point 0, high point 1000 TGas-1021-CO-500CO detector (range: 0-500ppm) ex-factory setting current low point 0, high point 500 TGas-1021-H2S-100H2S detector (range: 0-100ppm) ex-factory setting current low point 0, high point 100 TGas-1021-SO2-100SO2 detector (range: 0-100ppm) ex-factory setting current low point 0, high point 100 TGas-1021-CL2-50Cl2 detector (range: 0-50.0ppm) ex-factory setting current low point 0, high point 50 TGas-1021-HCN-30HCN detector (range: 0-30.0ppm) ex-factory setting current low point 0, high point 30 TGas-1021-NO2-100NO2 detector (range: 0-100ppm) ex-factory setting current low point 0, high point 100 TGas-1021-NH3-100NH3 detector (range: 0-100ppm) ex-factory setting current low point 0, high point 100 TGas-1021-PH3-5PH3 detector (range: 0-5.0ppm) ex-factory setting current low point 0.00, high point 5.00 TGas-1021-O3-1O3 detector (range: 0-1.0ppm) ex-factory setting current low point 0.01, high point 1.00 TGs-1021-ClO2-1ClO2 detector (range: 0-1.0ppm) ex-factory setting current low point 0.00, high point 1.00 Executed standard Note: GB standard is Chinese National Standard GB12358-2006 Gas monitors and alarms for workplace--General technical requirements GB3836.4-2000 Electrical apparatus for explosive gas atmospheres--art 4 intrinsic safety "i" GB3836.1-2000 Electrical apparatus for explosive gas atmospheres--Part 1 General requirements Explosion-proof mark: ExiaIICT3, it applies to 0 zone, 1 zone and 2 zone, the place that contains IIA IIC category and T1 T3 group of explosive gas mixture, and is qualified to get explosion-proof conformity certificate through inspection by CQST.