Definition of Parameters of Catalytic Combustion Sensor (I) - Power Supply Mode and Gas Species Measured

Catalytic combustion sensors are used in pairs, commonly known as black and white beads. Therefore, they are also called catalytic beads. Catalytic beads are used in series. There are two ways of power supply: constant voltage and constant current. Most catalytic beads are used at constant pressure, but a small number of catalytic beads work at constant current. The power of catalytic combustion sensors is generally large, usually hundreds of milliwatts.