1 PC MC21B Catalytic Flammable Gas Sensor

MC21B adopts catalytic combustion principle, and its two arms of electric bridge consists of a test element and a compensate element. The resistance of the test element rises once it meets the combustible gases, in the same time, the output voltage of the bridge changes and the voltage variation rises in direct proportion to the gas concentration. The compensate element, as a conference, has the function of compensating temperature and humidity. Application It is used for household occasions to detect combustible gases leakage alarm or concentration such as natural gas, liquefied gas and so on. Features Bridge output voltage in linear; Fast response; Good repeatability and selectivity; Stable and reliable; Resist H2S poisoning & organosilicone. Specifications Model MC21B Sensor Type Catalytic Type Standard Encapsulation Metal cap &Plastic base Working voltage(V) 2.5±0.1 Working current(mA) 150±10 Sensitivity (mV) 20%LEL CH4 12～45 Sensitivity (mV) 20%LEL C3H8 10～30 Linearity ≤5% Measuring range(%LEL) 0～100 Response Time (90%) ≤10s Recovery Time (90%) ≤30s Operation Environment -40～+70℃ <95%RH Storage Environment -20～+70℃ <95%RH Lifespan 5 years   * The description and specifications might be changed without notice. Please contact us for the latest information before placing orders.