Performance characteristics and applications of semiconductor material gas detectors
The semiconductor material gas detector can detect semiconductor material gases. Due to its own characteristics, it can significantly reduce costs and maintenance time. Its operation is simple and easy to use.
characteristic
Simply replace the sensor unit to detect various object gases
No gas detector calibration is required when using a box type sensor unit
Can significantly reduce costs and maintenance time
When there is no alarm (gas concentration displayed below 5ppm) and at 20 ℃
Combustible gas detector is a detector installed and used in industrial and civil buildings that responds to the concentration of single or multiple combustible gases. The commonly used combustible gas detectors in daily life are catalytic combustible gas detectors and semiconductor combustible gas detectors.
Semi conductive combustible gas detectors are mainly used in places such as restaurants, hotels, and home workshops where gas, natural gas, and liquefied gas are used. Catalytic combustible gas detectors are mainly used in industrial places where combustible gases and vapors are emitted.
Catalytic combustible gas detector uses the resistance change of refractory metal platinum wire after heating to determine the concentration of combustible gases.
When combustible gas enters the detector, it causes oxidation reaction (flameless combustion) on the surface of the platinum wire, and the heat generated increases the temperature of the platinum wire, causing a change in its electrical resistivity. Therefore, when encountering high temperature and other factors, the temperature of the platinum wire changes, and the electrical resistivity of the platinum wire changes, resulting in a change in the detected data.
