A variety of classification standards for gas detectors
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.
About Qi
There are roughly the following categories of body detection devices:
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
At present, with the development of manufacturing technology, portable gas detectors or composite gas detectors or multiple gas detectors are also a new choice for us. Due to the fact that this detector can be equipped with multiple gas (inorganic/organic) detection sensors on a single host, it has the characteristics of small size, light weight, fast response, and simultaneous display of multiple gas concentrations. More importantly, the pump suction composite gas detector is cheaper and more convenient to use than multiple single diffusion gas detectors. It should be noted that when selecting such detectors, it is best to choose instruments with separate switch functions for each sensor to prevent damage to one sensor from affecting the use of other sensors. At the same time, in order to avoid blockage of the suction pump due to water ingress, it is safer to choose instruments with intelligent pump designs that have pump stop alarms.
