A gas sensor is a sensor that converts gas components and concentrations into electrical signals. In the production and life of modern society, various gases are exposed and need to be tested and controlled. Such as the detection and control of gas components in chemical production, the detection and alarm of coal mine gas concentration, the monitoring of environmental pollution, gas leakage, fire alarm, detection and control of combustion conditions.
There are many types of gas sensors, including gas sensors for sensitive gas types, vacuum gas sensors for sensitive gas volumes, and gas component sensors for detecting gas components. The former mainly includes a semiconductor gas sensor and a solid electrolyte gas sensor, and the latter mainly has a high frequency component sensor and an optical component sensor. Semiconductor gas sensors have a wide range of applications due to their high sensitivity, fast response, long life and low cost.
