Classifications of Gas Detectors by Different Standards
Gas detector is an instrument tool for detecting gas leakage concentration. Mainly using gas sensors to detect the types of gases present in the environment, gas sensors are sensors used to detect the composition and content of gases. It is generally believed that the definition of gas sensors 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 uses physical or chemical methods.
There are roughly the following classifications of gas detectors:
① Gas detectors are classified according to their detection objects, including combustible gas (including methane) detection alarms, toxic gas detection alarms, and oxygen detection alarms.
② According to the principle of detection, combustible gas detection includes catalytic combustion type, semiconductor type, thermal conductivity type, and infrared absorption type; Toxic gas detection includes electrochemical and semiconductor types, etc; Oxygen detection has electrochemical types, etc.
③ Classified by usage, there are portable and fixed types.
④ Classified by usage location, there are conventional and explosion-proof types.
⑤ Classified by function, there are gas detectors, gas alarms, and gas detection alarms.
⑥ Classified by sampling method, there are diffusion and pump suction types
