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Gas | Concetration | Response |
---|---|---|
Hydrogen cyanide (HCN) | ||
CO | 300 ppm | cca 0.5 ppm |
H2S | 15 ppm | see note below |
SO2 | 5 ppm | cca 8 ppm |
NO | 35 ppm | cca 3.5 ppm |
NO2 | 5 ppm | cca 10 ppm |
H2 | 200 ppm | 0 ppm |
Ethylene | 100 ppm | cca 1 ppm |
Note: All data above are valid for sensors by RAE Systems. Due to a very high cross-sensitivity to H2S, this sensor is unsuitable for use in atmospheres that contain H2S.
Gas | Concetration | Response |
---|---|---|
Hydrogen sulphide (H2S) | ||
CO | 300 ppm | < 1.5 ppm |
SO2 | 5 ppm | cca 1 ppm |
NO | 35 ppm | < 0.7 ppm |
NO2 | 5 ppm | cca 1 ppm |
H2 | 3000 ppm | 0 ppm |
HCN | 10 ppm | 0 ppm |
HCl | 10 ppm | 0 ppm |
NH3 | 50 ppm | 0 ppm |
PH3 | 5 ppm | cca 4 ppm |
CS2 | 100 ppm | 0 ppm |
Methyl sulphide | 100 ppm | 9 ppm |
Ethyl sulphide | 100 ppm | 10 ppm* |
Methyl mercaptan | 5 ppm | cca 2 ppm |
Ethylene | 100 ppm | < 0.2 ppm |
Isobutylene | 100 ppm | 0 ppm |
Toluene | 10000 ppm | 0 ppm* |
Turpentine | 3000 ppm | cca 70 ppm* |
Note: All data above are valid for sensors by RAE Systems. High levels of polar organic compounds including alcohols, ketones, and amines give a negative response.
*Estimated from similar sensors
Gas | Concetration | Response without filter# | Response with filter* |
---|---|---|---|
Carbon monooxide (CO) | |||
H2S | 10 ppm | 0 ppm | |
SO2 | 5 ppm | 0 ppm | |
Cl2 | 10 ppm | 0 - 1 ppm | |
HCl | 10 ppm | 0 ppm | |
NO | 35 ppm | 1 ppm | 1 ppm |
NO2 | 5 ppm | 0 ppm | 0 ppm |
NH3 | 100 ppm | 0 ppm | 0 ppm |
H2 | 100 ppm | 40 ppm | 40 ppm |
Etylene | 100 ppm | 24 ppm | 20 ppm |
Acetylene | 250 ppm | 250 ppm | |
Ethanol | 200 ppm | 0 ppm | 0 ppm |
Ethylene oxide | 125 ppm | > 40 ppm | |
Propane | 100 ppm | 0 ppm | 0 ppm |
Butane | 100 ppm | 1 ppm | 1 ppm |
Isobutylene | 100 ppm | 9 ppm | 4 ppm |
Isobutylene | 1000 ppm | 30 ppm | 22 ppm |
Hexane | 500 ppm | 0 ppm | 0 ppm |
MEK | 100 ppm | 0 ppm | 0 ppm |
TCE | 100 ppm | 25 ppm | 15 ppm |
Nitrogen | 100 % | 0 - 4 ppm |
Note: All data above are valid for sensors by RAE Systems.
#New sensor. Used sensors show increasing response to VOCs.
*Disk-shaped activated carbon fiber filters placed on top of the CO sensor help reduce response to VOCs.
Gas | Concetration | Response |
---|---|---|
Amnonia (NH3) | ||
Triethylamine (TEA) | 50 ppm | 25 ppm |
CO | 300 ppm | 0 ppm |
H2S | 15 ppm | about 15 ppm |
SO2 | 5 ppm | about 3 ppm |
NO | 35 ppm | about 7 ppm |
NO2 | 5 ppm | 0 ppm |
Cl2 | 1 ppm | about 0.5 ppm |
H2 | 100 ppm | 0 ppm |
HCN | 10 ppm | about 0.5 ppm |
HCl | 5 ppm | 0 ppm |
Hydrazine | - | 3:1 |
Ethylene | 100 ppm | 0 ppm |
Note: All data above are valid for sensors by RAE Systems.