Oxygen (O2) Gas Detectors
Accurate oxygen (O2) measurements are essential to prevent injuries or deaths in situations with potentially high or low levels of oxygen. Oxygen gas detectors will typically trigger an alarm when the oxygen level drops below 19.5 percent volume. The most common use of oxygen gas detection is in confined spaces—totally or partially closed areas not designed to be permanently occupied. It is essential to draw an O2 gas sample before entering these spaces and continuously monitor O2 levels after entry.

Characteristics of Oxygen
Oxygen is a gas without color, taste, or smell. While we breathe oxygen in the air, it is generally mixed with nitrogen. Oxygen displacement is a common result of many industrial processes, so it is important to measure oxygen levels and evacuate when the level drops below 19.5% volume, the OSHA-mandated level.
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