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A gas detector is a device that detects the presence of gases in an area, often as part of a safety system. A gas detector can sound an alarm to operators in the area where the leak is occurring, giving them the opportunity to leave.
For some gases, such as ethylene oxide, cross-sensitivity can be a problem because ethylene oxide requires a very active working electrode catalyst and high operating potential for its oxidation. Therefore, gases that are more easily oxidized, such as alcohols and carbon monoxide will also give a response. Cross-sensitivity problems can be ...
The alarm points on carbon monoxide detectors are not a simple alarm level (as in smoke detectors) but are a concentration-time function. At lower concentrations, e.g. 100 parts per million (PPM), the detector does not sound an alarm for many tens of minutes. At 400 PPM, the alarm sounds within a few minutes.
Carbon monoxide detectors should be installed between knee to head height on every level of the home, especially those floors with fuel burning appliances and outside of sleeping areas. We also ...
Vapor monitor badges are available for a limited number of chemicals, but some that are available include formaldehyde, organic vapors, ethylene oxide, mercury, and nitrous oxide. [1]: 60 Impingers and bubblers collect samples in a fluid; they are especially useful in high humidity environments. [2]
Metal oxide chemiresistor sensors were first commercialized in 1970 [12] in a carbon monoxide detector that used powdered SnO 2. However, there are many other metal oxides that have chemiresistive properties. Metal oxide sensors are primarily gas sensors, and they can sense both oxidizing and reducing gases. [2]
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