Selection standard and principle of toxic and harmful gas detector
The core part of toxic gas detector is sensor. The sensor of toxic gas detector is electrochemical sensor. The life of electrochemical sensors in air is generally two years. Some models of individual manufacturers can reach three years or even longer. Some only have a year and a half or less. Unless otherwise specified, the service life of imported electrochemical sensors is two years.
Toxic gas detector is a special kind of safe gas environmental sanitation detector, which is used to detect the toxic gas content in the air of chemical workplace or equipment and give an alarm when it exceeds the limit. Safety management of hazardous chemicals should be strengthened, safety measures should be improved and hidden dangers of accidents should be controlled. However, it is impossible to be absolutely safe, and mistakes will still occur. Therefore, it is very necessary to detect and alarm the hidden dangers of accidents, and to detect and alarm all toxic gases or liquids (vapors) in the hazardous chemical industry. It is of great significance to avoid and control accidents.
The toxic and harmful gas detector is a special safety and health detector, which is used to detect the content of flammable or toxic gases and vapors in the air in the chemical workplace or equipment, and give an alarm when it exceeds the limit.
Selection principle of toxic and harmful gas detector:
1, a clear test purpose, choose the instrument category. The detection of harmful gases generally has two purposes. The first is to detect the explosion, and the second is to detect the poisonous gas. The so-called explosion test is to detect the combustible gas content in dangerous places and give an alarm when it exceeds the standard to avoid explosion accidents; Poison test is to detect the content of toxic gas in dangerous places, and alarm when it exceeds the standard to avoid poisoning of staff.
2, clear the purpose of testing, choose the type of instrument. If long-term leak detection is carried out at the production or storage location, a fixed detection alarm should be used; Other maintenance inspection, emergency inspection, entrance inspection and patrol inspection, etc., use portable instruments.
3, clear test object, choose the best instrument model. It should be noted that the detection principle of the instrument should adapt to the requirements of the detection environment. (There is a problem in adapting to the testing environment)
