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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±0.1VVH: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
     
     
     
  • 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.
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