2. Detection principles
Measuring the concentration of a gas (or vapour) is based on its physical or chemical properties, usually the property that is particularly sensitive to the presence and variation of the concentration of this gas, or specific to this gas.
For example, oxygen is a paramagnetic gas, and some detectors use this property to measure oxygen concentration.
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The main properties used in commercial devices are :
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physical properties :
thermal conductivity,
absorption of light radiation,
adsorption on a material,
sound level of an ultrasonic leak ;
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chemical...
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Detection principles
Construction of the various devices
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Bibliography
- (1) - DRÄGER - Livre de poche Tubes Réactifs Dräger & MicroTubes - (2022). PDF disponible en ligne https://www.draeger.com/Content/Documents/Products/tubes-hb-9092086-fr.pdf ...
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