A gas detector is a device which detects the presence of various
gases within an area, usually as part of a system to warn about gases which might be harmful to
humans or
animals. Gas detectors can be used to detect
combustible,
toxic, and
oxygen gases. There are several technologies for gas detection:Flame Ionization DetectorNon-Dispersive Infrared DetectorPhoto Ionization DetectorElectrochemical SensorsCatalytic SensorsMetal Oxide Semiconductor Gold FilmDetector TubesSample Collection and Chemical Analysis
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