MP-4 Gas Sensor Methane Sensor Detecting Combustible Methane Gas at Semiconductor Combustible DIY for Safety Detection S

Overview The MP 4 methane sensor uses a multi layer thick film manufacturing process to fabricate a heater and a metal oxide semiconductor gas sensing layer on both sides of a micro Al2O3 ceramic substrate which are packaged in a metal case The conductivity of the sensor changes when there is a detected gas in the ambient air The higher the concentration of the gas the higher the conductivity of the sensor This change in conductivity can be converted to an output signal corresponding to the gas concentration using a simple circuit Characteristics The sensor has good sensitivity to methane in a wide concentration range and has the advantages of strong anti interference ability low power consumption quickly response recovery good stability long life low cost and simple driving circuit Application Combustible gas leak monitoring device for home factory commercial use fire safety detection system Combustible gas leak alarm gas leak meter  Note The above figure shows the basic test circuit of the MP 4 sensor The sensor requires two voltages to be applied heater voltage VH and test voltage VC The VH is used to provide a specific operating temperature for the sensor either DC or AC The VRL is the voltage across the load resistor RL of the sensor in series VC is the voltage for testing the load resistor RL and requires a DC power supply Package Included 1 x MP 4 Gas Sensor Methane Sensor Detecting Combustible Methane Gas