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MQ-4 natural gas detection sensor

Product ID：CHGQITI002

Price: Please inquire PDF Format

Supply Ability:1500 SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberMQ-4

Brand NameHANWEI

Payment TermsTT，PAYPAL，Alibaba.com Pay

MQ-4 natural gas detection sensor
Introduction:
The gas sensing material used in MQ-4 natural gas sensors (gas sensors) is tin dioxide (SnO2) with low conductivity in clean air. When there is combustible gas in the environment where the natural gas sensor is located, the conductivity of the natural gas sensor increases with the increase of combustible gas concentration in the air. The change in conductivity can be converted into an output signal corresponding to the gas concentration using a simple circuit.
The MQ-4 natural gas sensor has high sensitivity to methane and strong anti-interference ability against alcohol and other interfering gases.
characteristic:
1.Good sensitivity to combustible gases over a wide concentration range
2.Long lifespan and low cost
3.A simple driving circuit is sufficient
Technical parameters:

PRODUCT MODEL			MQ-4 Natural Gas Sensor
product type			semiconductor gas sensor
Standard packaging			Rubber wood, metal cover
Detect gas			methane
Detect concentration			300-10000 ppm (methane)
Standard circuit conditions	loop voltage	Vc	≤24V DC
	heating voltage	VH	5.0V±0.1V ACorDC
	load resistance	RL	adjustable
Characteristics of gas sensing components under standard testing conditions	heating resistor	RH	26 Ω± 3 Ω (room temperature)
	Heating power consumption	PH	≤950mW
	Output voltage	Vs	2.5V~4.0V(in 5000ppm CH4 )
	sensitivity	S	Rs (in air)/Rs (5000ppm methane) ≥ 5
	Concentration slope	α	≤0.6(R5000ppm/R1000ppm CH4)
Standard testing conditions	Temperature and humidity		20℃±2℃； 65%±5%RH
	Standard Test Circuit		Vc:5.0V±0.1V； VH:5.0V±0.1V
	Warm-up time		Not less than 48 hours
	Oxygen concentration		21% (not less than 18%) (Oxygen concentration will affect the initial value, sensitivity, and repeatability of the sensor. Please consult for use when using at low oxygen concentrations)
lifetime			10 Years