Classification standard for gas detectors
A gas detector is an instrument tool for detecting gas leakage concentration.
Gas detectors mainly use gas sensors to detect the types of gases present in the environment, and gas sensors are sensors used to detect the composition and content of gases. It is generally believed that the definition of gas sensors
It is based on the classification of detection targets, which means that any sensor used to detect gas composition and concentration is called a gas sensor, regardless of whether it is using physical or chemical methods.
There are several classification standards for gas detectors
1. Gas detectors are classified by detection object, including combustible gas (including methane) detection alarm, toxic gas detection alarm, and oxygen detection alarm.
2. According to the classification of detection principles, combustible gas detection includes catalytic combustion type, semi conductive type, thermal conductivity type, and infrared absorption type; Toxic gas detection includes electrochemical and semiconductor types; Oxygen detection
There are electrochemical types, etc.
3. Classified by usage, there are portable and fixed types.
4. Classified by place of use, there are conventional and explosion-proof types.
5. According to functional classification, there are gas detectors, gas alarms, and gas detection alarms.
6. Classified by sampling method, there are diffusion type and pump suction type
