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 Carbon Monoxide

Gas Name: Carbon Monoxide           Chemical Formula: CO           Synonyms: Carbon Oxide, Flue Gas

Product Uses/Sources/Applications

Carbon monoxide is a byproduct of the burning of hydrocarbons.  It is a toxic component of vehicle exhaust, and can typically be found in any space where engines are burning gasoline, propane, diesel fuel, natural gas, kerosene, or jet fuel.
Typical carbon monoxide detection applications include installing gas detection equipment in enclosed parking structures, ambulance bays, fire halls, warehouses, loading docks, ice arenas, maintenance facilities and municipal works garages.
Carbon monoxide can also result as a byproduct of malfunctioning heating appliances (furnaces, boilers, stoves, direct and indirect fired air handlers).


     Short Term (15-minute STEL*)
     Long-term (8-hr TWA*)
100 ppm
25 ppm
     Lower Explosive Limit (LEL) 12.5 % in air

NIOSH Pocket Guide                                                           Click here for link  

Physical Properties

Appearance and Odour odourless, colourless
Relative density (air = 1.0) 0.967

Armstrong Monitoring Recommends

Sensor Type: Electrochemical Diffusion Type
Standard range: 0-100 or 0-200 ppm
Standard trip points: 25 ppm, 100 ppm
Recommended sensor mounting height: 4-5 ft AFF.
Sensor coverage: approx. 50 ft radius

* The exposure limits referenced are based on various listings including those of the Ontario Ministry of Labour and the US National Institute of Occupational Safety Health (NIOSH). Please refer to your local regulations for the limits in your area.


Armstrong Monitoring
215 Colonnade Road South
Ottawa, Ontario
K2E 7K3

Toll Free: 800.465.5777

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