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Carbon Monoxide

MonoxideAlphasense Carbon Monoxide gas sensors operate using proven fuel cell technology.

Sensors are available in the following sizes:

A: 20mm diameter, the industry standard size for portable gas detectors

B: 32mm diameter package, the best choice for fixed site applications

C: 20mm diameter with extra height for additional filter material when measuring combustion gases

D: miniature, with proven long-term performance. Sensors for the next generation of portable gas detectors

The Alphasense family of CO sensors have proven themselves in the field with long term stability and reliable operation, well beyond the two-year warranty, using our patented electrode technology. The ‘X’ sensors have low hydrogen sensitivity, as drop-in replacements for the standard ‘F’ sensors.

Application notes

Download Toxic Application Notes – see application notes for full details.

Sensor Specification Summary

Compare Alphasense Carbon Monoxide sensors – sensor specification summary.

Data sheets

Go to downloads page

File Name Description Type Download Link
CO-D4 Miniature, filtered Data Sheet
CO-CX Combustion, low hydrogen cross sensitivity Data Sheet
CO-CF Combustion, filtered Data Sheet
CO-CE Combustion, high concentration Data Sheet
CO-BX Compact, low hydrogen cross sensitivity Data Sheet
CO-BF Compact, filtered Data Sheet
CO-B4 Compact, 4-electrode, low ppb Data Sheet
CO-AX Small, low hydrogen cross sensitivity Data Sheet
CO-AF Small, filtered Data Sheet
CO-AE Small, filtered, high concentration Data Sheet
CO-A4 Small, 4-electrode, low ppb Data Sheet


Staying at the forefront of sensor technology guarantees the best solutions for our customers



Each and every sensor is manufactured to the highest standards and tested for long-term reliability



Through investment and innovation we strive to exceed environmental and legislative targets


Download Data Sheets

Get data on our sensors Download Data Sheets

Download Application Notes

Get technical information Download Application Notes


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