| Model: | TGas-1021 |
|---|---|
| Brand: | globeinstrument |
| Origin: | Made In China |
| Category: | Security & Protection / Alarm |
| Label: | toxic gas transmitte , gas transmitter , NH4 gas detection |
| Price: |
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| Min. Order: | 1 pc |
| Live Chat: | Last Online:21 Jun, 2013 |
TGas-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.
Main features
l Quick response speed
l Automatic modification of zero drift
l Intrinsic safety certification
l With infrared remote control, it can be set without opening cover
l High measurement accuracy
Technical parameters
Parameter | Characteristics |
Detection | Single gas detector |
Operation | Push-key or remote controller |
Calibration | Users can perform linear calibration operation |
Sensor | Plug-in electrochemical sensor |
Display | Six- segment code liquid crystal digit-display reading |
Reading | Display gas composition/concentration after starting up self-checking |
Output signal | Output 16-bit precision 4-20mA current by means of two-wire system, and the output size can be defined by users |
Working temperature | |
Operating voltage | 24V |
Precision | Measurement error <5%, repeatability <3% |
Impedance | 200 ohm |
Measurement category and range | Refer to table of lectotype |
Service life of sensor | Poisonous gas ≥3 years, oxygen ≥2 years, ammonia ≥1 year |
Power supply of detector | Power shall be supplied to the detector by safety grid, explosion-proof mark of safety grid: ExiaⅡC 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)
Model | Instrument description |
TGas-1021-CO-1000 | CO detector (range: 0-1000ppm) ex-factory setting current low point 0, high point 1000 |
TGas-1021-CO-500 | CO detector (range: 0-500ppm) ex-factory setting current low point 0, high point 500 |
TGas-1021-H2S-100 | H2S detector (range: 0-100ppm) ex-factory setting current low point 0, high point 100 |
TGas-1021-SO2-100 | SO2 detector (range: 0-100ppm) ex-factory setting current low point 0, high point 100 |
TGas-1021-CL2-50 | Cl2 detector (range: 0-50.0ppm) ex-factory setting current low point 0, high point 50 |
TGas-1021-HCN-30 | HCN detector (range: 0-30.0ppm) ex-factory setting current low point 0, high point 30 |
TGas-1021-NO2-100 | NO2 detector (range: 0-100ppm) ex-factory setting current low point 0, high point 100 |
TGas-1021-NH3-100 | NH3 detector (range: 0-100ppm) ex-factory setting current low point 0, high point 100 |
TGas-1021-PH3-5 | PH3 detector (range: 0-5.0ppm) ex-factory setting current low point 0.00, high point 5.00 |
TGas-1021-O3-1 | O3 detector (range: 0-1.0ppm) ex-factory setting current low point 0.01, high point 1.00 |
TGs-1021-ClO2-1 | ClO2 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.
