Regular Calibration and Testing Are Critical to Ensuring Gas Detector Accuracy and Safety
This sensor is prepared with a high-temperature resistant catalyst layer on the surface of a platinum resistor. At a certain temperature, combustible gases catalyze combustion on its surface. Combustion is a function of the concentration of combustible gases as the temperature of the platinum resistor increases and the resistance changes.
Catalytic combustion gas sensors selectively detect flammable gases: anything that can burn can be detected; Anything that cannot burn has no response from the sensor. Of course, there are many exceptions to the statement 'anything that can burn can be detected', but overall, the above selectivity is valid.
Catalytic combustion gas sensors have accurate measurement, fast response, and long lifespan. The output of sensors is directly related to the explosion hazard of the environment and is a dominant type of sensor in the field of detection.
Disadvantage: No selectivity within the flammable gas range. Working in a dark environment poses a risk of ignition and explosion. Most organic vapors have a toxic effect on sensors.
At present, the main suppliers of this sensor are in China, Japan, and the United Kingdom (the country of invention)! At present, China is the largest user (coal mine) of this sensor and also has the best sensor production technology. Although various agents constantly interfere with society's understanding of this sensor in their promotion, after all, the mainstream manufacturers of catalytic combustion gas sensors are in China.
