The catalytic combustion sensor adopts the Wheatstone bridge principle. The induction resistance and the combustible gas in the environment will burn without flame, so that the temperature will change the resistance of the induction resistance, break the bridge balance, and make it output a stable current signal. After the amplification, stabilization and processing of the later circuit, the reliable value will be finally displayed.
The principle of catalytic combustion sensor is one of the most widely used principles for detecting combustible gases at present. It has the characteristics of good linear output signal, reliable index, cheap price, and no cross interference with other non-combustible gases.
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