ABSTRACT
A device that detects the presence of various gases within an area, usually as part of a system to warn about gases that might be harmful to humans or animals. Various types of gas detectors are used to detect primarily combustible, toxic, and oxygen levels (i.e., deficiency), and carbon monoxide and carbon dioxide gases. They are typically used in confined spaces, utilities and chemical plants, industrial hygiene applications, and air quality testing. They can be fixed devices or portable devices worn by an individual. See also Combustible Gas Detector.
