CO-AX Carbon Monoxide Sensor

CO Gas Sensor, Electrochemical, A-Series, ppm-level CO monitoring in H2

High-performance CO detection for safety-critical monitoring and combustion analysis.

Alphasense CO-AX sensors provide high-performance carbon monoxide detection for portable and fixed gas monitors across industrial safety and air-quality applications.

These A-Series sized CO sensors come standard with filters to remove hydrogen gas and hence provide low hydrogen cross-sensitivity for combustion and industrial safety applications where CO must be measured in the presence of H2. These CO-AX sensors also have reduced cross sensitivity to H2S / NO2 / NO/SO2, making them highly selective for CO and eliminating false alarms..
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Key Specifications:

 

Sensor Model

Target Gas

Package Size

Concentration Range

Sensitivity

T90 Response Time

Warranty

CO-AX

Carbon Monoxide (CO)

A-Series

0–2,000 ppm

55–100 nA/ppm

<30s

24 months

 

Feature

Benefit

Low H₂ cross-sensitivity design

Improves CO accuracy in environments where hydrogen is present, such as combustion or reformer processes

Filtered electrochemical cell

Reduces cross-interference from common toxic gases while maintaining fast response.

Optimised for portable safety instruments

Ideal for handheld and personal monitors needing reliable CO readings in H2-rich areas.