MP-4 combustible gas methane sensor

MP-4 combustible gas sensor (gas sensor, natural gas sensor) adopts multi-layer thick film manufacturing process. The heater and metal oxide semiconductor gas sensing layer are respectively made on both sides of the micro Al2O3 ceramic substrate, and are packaged in a metal shell. The conductivity of the sensor changes when the detected gas is present in the ambient air. The higher the concentration of this gas, the higher the conductivity of the sensor. This change in conductivity can be converted into an output signal corresponding to the gas concentration using a simple circuit.


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Sensor Features
This product has good sensitivity to methane in a wide concentration range, and has the advantages of strong anti-interference ability, low power consumption, fast response recovery, good stability, long life, low cost, and simple driving circuit.


main application
1. Combustible gas leakage monitoring devices, fire/safety detection systems for homes, factories, and commercial use.

2. Combustible gas leak alarm, gas leak detector.


Technical indicators

Product number


product type

Planar Semiconductor Gas Sensor

standard package

metal package

detect gas

Methane, Natural Gas, Biogas

Detection concentration

300~10000ppm (methane, natural gas)

Standard Circuit Conditions

loop voltage


≤24V  DC

heating voltage


5.0V±0.1V AC or DC

Load Resistance



Gas sensor characteristics under standard test conditions

heating resistance


85Ω±15Ω(room temperature)

Heating power consumption



Sensitive body surface resistance


1KΩ~20KΩ(in 5000ppm Methane)



Rs(in air)/Rs(in 500ppm Methane)≥5

Concentration slope


≤0.6(R5000ppm/R1000ppm Methane)

 Standard Test Conditions

temperature humidity


Standard Test Circuit

Vc:5.0V±0.1V;    VH: 5.0V±0.1V

Preheat time

Not less than 48 hours

oxygen concentration

21% (not less than 18%, (the oxygen concentration will affect the initial value, sensitivity and repeatability of the sensor, please consult when using it under low oxygen concentration)


10 years

Note: Product parameters are subject to change without prior notice

production workshop


patent certificate

You can contact us through the online message and online customer service on the right, or you can call our national service hotline: 086-0371-60932951.


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