MEMS combustible gas sensor GM-402B

MEMS combustible gas sensor is composed of Si-based micro-hot plate made of MEMS technology and metal oxide semiconductor material with low conductivity in clean air. When the detected gas is present in the ambient air, the conductivity of the sensor changes. The higher the concentration of this gas, the higher the conductivity of the sensor. The 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 adopts MEMS technology, with solid structure and high sensitivity to combustible gas; it has the characteristics of small size, low power consumption, high sensitivity, fast response and recovery, simple driving circuit, good stability and long life.

main application
It is suitable for detecting gas leakage in consumer electronic products such as mobile phones and computers; it is also suitable for combustible gas leakage monitoring devices, gas leak detectors, and fire/safety detection systems for household and commercial use.

Technical indicators

Product number			GM-402B
product type			MEMS combustible gas sensor
standard package			Ceramic package
detect gas			Methane, propane, etc.
Detection concentration			1ppm~10000ppm（C₃H₈）
Standard Circuit Conditions	loop voltage	V_c	≤24V DC
	heating voltage	V_H	2.8V±0.1V AC or DC
	Load Resistance	R_L	adjustable
Gas sensor characteristics under standard test conditions	heating resistance	R_H	80Ω±20Ω (room temperature)
	Heating power consumption	P_H	≤80mW
	Sensitive body resistance	R_s	1KΩ~30KΩ(in 5000ppm CH4)
	Sensitivity	S	R₀(in air)/Rs(5000ppm CH₄)≥2
	Concentration slope	α	≤0.9(R_5000ppm/R_1000ppmCH4)
Standard Test Conditions	temperature humidity		20℃±2℃；55%RH±5%RH
Standard Test Conditions	Standard Test Circuit		Vc:5.0V±0.1V； V_H:2.8V±0.1V

Note: Product parameters are subject to change without prior notice

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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.