Combustible gas alarm core components and the use of the principle is today and we said that the knowledge, gas alarm in our life has been very common, but a lot of people do not know his principle, the following by me in detail for you to answer.

Combustible gas alarms are installed and used in industrial and civil buildings. They are detectors that respond to single or multiple combustible gas concentrations. The most commonly used combustible gas alarm is catalytic combustion type. Catalytic combustible gas alarm uses the resistance change of refractory metal platinum wire to determine the concentration of combustible gas. . 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, and the resistivity of the platinum wire changes, so when encountering high temperature and other factors, the temperature of the platinum wire changes, and the resistivity of the platinum wire changes, and the detected data also changes.

when there is no combustible gas in the air, the output of the bridge circuit is zero. when the air contains combustible gas and diffuses to the detection element, flameless combustion occurs due to catalytic action, which increases the temperature of the detection element and increases the resistance of platinum wire, thus causing the bridge circuit to lose balance, thus, a voltage signal is output, the magnitude of which is proportional to the concentration of the combustible gas. The signal is amplified, analog-to-digital converted, and the concentration of the combustible gas is displayed through the liquid display. Gas leak alarm is the use of surface resistance changes to determine the concentration of combustible gas. Combustible gas alarm by detection and detection of two parts, with detection and detection function. In the working state, when encountering combustible gas, the resistance drops, and the drop value corresponds to the concentration of combustible gas.

the core components and usage principle of combustible gas alarm have been told to everyone. friends who need to know about gas alarm can come to yiyuntian for consultation. we have professional personnel to answer your questions.