UK alphasense dual gas carbon monoxide/hydrogen sulfide sensor (CO/H2S sensor) - COH-A1
Technical specifications for the carbon monoxide channel:
Resolution: 0.5ppm Response time t90 (seconds) <25s
Measurement range: 2000 ppm Zero current <-4~2ppm
Sensitivity: 55-90 nA/ppm, 400ppm CO
Linearity: linear from 0-400ppm
Overload range: 5,000ppm / maximum concentration of stable response gas pulse
Technical specifications for the hydrogen sulfide channel:
Resolution: 0.05ppm Response time t90 (seconds) <30s
Measurement range: 200 ppm Zero current: 0~-0.3ppm
Sensitivity: 550-875 nA/ppm, 20ppm H2S
Linearity: linear from 0-20ppm
Overload range: 500ppm / concentration of stable response gas pulse
Product introduction
1. Dual gas carbon monoxide/hydrogen sulfide sensor (CO/H2S sensor) COH-A1Product description：
COH-A1 This type of sensor provides an excellent approach in terms of external dimensions and electrode structure. A high-capacity filter on the carbon monoxide working electrode completely eliminates cross-sensitivity of the channel to hydrogen sulfide, acid gases, and similar gases such as sulfur dioxide and nitrogen oxides. Adopting this series of sensors in portable instrument designs enables COH-A1 precise factory-level maintenance and field-level calibration for mixed gases, without worrying aboutCO incorrect calibration of the channel
2. COH-A1Technical specifications for the carbon monoxide channel of this type of sensor:
Resolution:0.5ppm
Response time t90(seconds)<25s
Measurement range:2000 ppm
Zero current<-4~2ppm
Sensitivity: 55-90 nA/ppm, 400ppm CO
Linearity:0-400ppmlinear
Overload range:5,000ppm/concentration of stable response gas pulse
3. COH-A1Technical specifications for the hydrogen sulfide channel of this type of sensor:
Resolution:0.05ppm
Response time t90(seconds)<30s
Measurement range:200 ppm
Zero current:0~-0.3ppm
Sensitivity: 550-875 nA/ppm, 20ppm H2S
Linearity:0-20ppmlinear
Overload range:500ppm/concentration of stable response gas pulse
