the combustible gas detector can detect different gases according to different detection principles.
Catalytic combustion principle: The catalytic combustion gas sensor uses the thermal effect principle of catalytic combustion. Under certain temperature conditions, the combustible gas will burn without flame under the action of the detection element carrier surface and the catalyst, and output an electric current proportional to the concentration of the combustible gas. Signal. By measuring the resistance change of the platinum wire, the concentration of flammable gas can be known. It is mainly used for the detection of flammable gases, with good output signal linearity, reliable index, low price, and no cross infection with other non-flammable gases. The detected gases include almost all hydrocarbons.
Semiconductor principle: Semiconductor gas sensor is a gas sensor that uses semiconductor gas sensor as a sensitive element. It is the most common gas sensor and is widely used in combustible gas leakage detection devices in homes and factories. It is suitable for methane, natural gas, liquefied gas, hydrogen, etc. detection
