Methane Gas Sensor

MQ-4 gas sensor has high sensitity to Methane, also to Propane and Butane. The sensor could be used to detect different combustible gas, especially Methane, it is with low cost and suitable for different application.

Model No. MQ-4
Sensor Type Semiconductor
Standard Encapsulation Bakelite (Black Bakelite)
Detection Gas Natural gas/ Methane
Concentration 300-10000ppm
( Natural gas / Methane)
Circuit LoopVoltage Vc ≤24V DC
Heater Voltage VH 5.0V±0.2V ACorDC
Load Resistance RL Adjustable
Character Heater Resistance RH 28.5Ω±3Ω(Room Tem.)
Heater consumption PH ≤900mW
Sensing Resistance Rs 2KΩ-20KΩ(in 5000ppm CH4)
Sensitivity S Rs(in air)/Rs(5000ppm CH4)≥5
Slope α ≤0.6(R5000ppm/R3000ppmCH4)
Condition Tem. Humidity 20℃±2℃；65%±5%RH
Standard test circuit Vc:5.0V±0.1V,
VH: 5.0V±0.1V
Preheat time Over 48 hours