*Click Here for Universal Gas Detector* (Sensor requires transmitter for operation)
Specifications
Sensor Model GS-840DQS
Detection principle Electrochemical
Range, Standard 0 – 0.3 ppm
Electrolyte EL- 860-1
Membrane M – 801M
Applied Voltage + 200 mV
T90 < 30 seconds
Housing Material PVC/PTFE
Dimensions 3 ½” (H) x 1 3/8” (D)
Operating Temperature -10° to + 40° C
Humidity 10 – 100%
Installation Angle 45° maximum
Cross Sensitivities
| Gas | Concentration | Indication |
| O3 | 0.3 ppm | 0.3 ppm |
| Cl2 | 0.2 ppm | 0.3 ppm |
| ClO2 | 0.1 ppm | 0.1 ppm |
| HCl | 15 ppm | Slight Effect |
| HF | 9 ppm | 0 ppm |
| NH3 | 75 ppm | 0 ppm |
| H2 | 4% | 0 ppm |
| CO | 1000 ppm | 0 ppm |
| H2S | 29 ppm | 0 ppm |
| NO | 1% | 0 ppm |
| NO2 | 100 ppm | Slight Effect |
| CH4 | 4 % | 0 ppm |
| R22 | 140 ppm | 0 ppm |
| SO2 | 15 ppm | Slight Effect |
| CH3OH | 700 ppm | 0 ppm |
Note * Consult PureAire for additional ranges
