GASTEC CORPORATION - For all types of gas and vapour

Carbon monoxide detectorCM-9A

Gas detection in a compact body

Employs a highly sensitive controlled potential electrolysis method used for electrochemical analysis. It is able to accurately detect even the faintest amount of carbon monoxide.

  • Small and lightweight, only 60g
  • Low power consumption
  • One-touch zero calibration of CO level, and span adjustment
  • Incorporates a logging function.
Carbon monoxide detector CM-9A
*The products may not be sold depending on countries and regions. 


Measurement range 0 - 300 ppm (enhanced range : 301 - 1999 ppm)
Measurement method Controlled potential electrolysis method
Sampling method Diffusion
Indicating accuracy +/- 5% of full scale at time of calibration
Operating Temperature / Humidity range Temperature : -10 - 40 ℃

Relative humidity : 30 - 90 %RH
Weight 60g(including batteries)
Dimensions 77(W) x 21(D) x 42(H) mm(Excluding protrusions)


This is a system for supplying calibration gas to the diffusion type sensor.

φ15 x 14 3g : CM-8A

Product inquiries

Please use the relevant link below to make an inquiry.