Common Gasses and where to find them
(Combustible / %LEL): The most common combustible gases are Natural gas (Methane), propane and hydrogen but there are many other hydrocarbon gases a combustible gas sensor can detect. Methane gas is commonly caused when organic materials get digested by microorganisms, which release methane as a by-product. Methane gas is commonly found at landfills, wetlands, sewers, agriculture, biofuels, oil refining.
Oxygen (O2): Oxygen levels are typically at 21% in the atmosphere. Oxygen can be displaced by other gases especially in confined spaces. Low Oxygen levels pose a health risk when the Oxygen drops below 19.5%.
Hydrogen Sulfide (H2S): Hydrogen sulfide is produced by bacterial breakdown of organic materials and wastes. Activities that can produce H2S gas include petroleum/natural gas drilling and refining, wastewater treatment, landfills, coke ovens, tanneries, and Kraft paper mills.
Carbon Monoxide (CO): Carbon monoxide is produced when fuels such as gas, oil, coal and wood do not burn completely (poor combustion). Carbon Monoxide is commonly caused by vehicles, boilers & furnaces, gas driven machinery, water heaters, and cookers.
(Toxic gases): Although CO and H2S are commonly monitored for, OSHA requires you to monitor any gas that poses a health risk. Gas meters are available with many gas combinations. If you don’t find the combination you require, please contact out technical group for assistance.