Safety equipment is used to measure potentially hazardous atmospheres and similarly to protect lives by a possible inadvertent start up of plant or equipment. This requires the use of atmospheric monitoring equipment or devices and lock out equipment.
Safety monitoring equipment is used to measure the levels of various gases such as oxygen (O2), carbon monoxide (CO), hydrogen sulphide (H2S), Carbon Dioxide (CO2), Sulphur Dioxide (SO2), Nitrogen Dioxide (NO2) hydrogen Cyanide (HCN), refrigerants and others.
Certain levels of these gases can present an immediate risk to life so it is paramount that the level of these gases in the breathing air of a worker are known.
Concentrations of flammable gases or vapour greater than the Lower Explosive Limit (LEL) of 5% present an explosion risk so it is just as important to know what these levels are to avert a possible explosion.







