3. Construction of the various devices
Gas detectors are classified into three main types: fixed detectors, transportable detectors and portable detectors. They can be designed to detect a single type of gas (a single-function device such as an explosimeter, for example), or several types of gas (a multi-function device such as a portable multi-gas detector, where several gases may be detected: for example a flammable gas (CH 4 or another gas), oxygen(O 2 ), carbon monoxide (CO) and hydrogen sulfide (H 2 S).
They operate by diffusion or can be fitted with a pump, which brings the gas to be detected inside the device. The detection head is either integrated into the device, or remote from the electronics, the latter also comprising a part in the remote head, and a part...
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Construction of the various devices
Characteristics and influencing factors
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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Standards and norms
- Electrical oxygen detection and measurement devices – Fitness-for-purpose requirements and test methods. - NF EN 50104 - 2019
- Electrical equipment for the detection of flammable gases in domestic premises – Part 1: Test methods and suitability requirements - NF EN 50194-1 - 2023
- Electrical equipment for combustible gas detection in domestic premises – Part 2: Electrical equipment for continuous operation...
Regulations
ATEX Directive 2014/34/EU 2014 Applies in the same way as Directive 94/9/EC to equipment and protective systems intended for use in potentially explosive atmospheres.
Directive 98/24/EC 1998 Concerning the protection of the health and safety of workers from the risks related to chemical agents at work (14th individual Directive within the meaning of Article 16(1) of Directive 89/391/EEC)
...Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
Autochim
https://www.autochim.com/detection-de-gaz/
Consilium Safety
https://www.consiliumsafety.com/en/products/?market=industrial
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