CO Probe - CO Probe

Order-Nr.  0632 1235

  • Long-term measurement stability thanks to electrochemical sensor

  • Automatic zeroing

  • Measuring range: 0 to +500 ppm

Product no longer available. Have you checked out its successor?
Why not enjoy the benefits that that it has to offer:
>> To the product (fixed cable)
>> To the product (wireless, with Bluetooth)
Please note that the successor products are only compatible with testo 400 or testo 440.


Product Description

Be alerted about CO concentrations which are hazardous to humans. Before entering a boiler room, a leak or some similar problem may endanger the life of the fitter. Tobacco smoke, petrol heaters, defective room heating furnaces and car exhausts are also frequent sources of CO.

Carbon monoxide is a colourless, odourless and tasteless gas and one of the most toxic substances in indoor air. The gas prevents the brain from getting enough oxygen and, in high quantities, can lead to nausea, loss of consciousness and even death. The CO measurement gives you a clear picture of the carbon monoxide levels in the indoor air.

Delivery Scope

Ambient CO probe with calibration protocol including fixed cable 1.5 m.

Technical Data

Ambient CO

Measuring range

0 to +500 ppm


±5 ppm (0 to +100 ppm)

±5 % of mv (+100.1 to +500 ppm)

General technical data

Cable length

4.9 ft. / 1.5 m