MQ-6 Propane LPG Flammable Gas Sensor

  • • Target: LPG, Propane, Combustible Gas
  • • Propane detection range: 300~10000ppm(flammable gas)
  • • Application: Domestic gas leakage alarm

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  • Principle Introduction
Principle Introduction:
Sensitive material of MQ-6 gas sensor is SnO2, which with lower conductivity in clean air. When the target flammable gas exist, the sensor’s conductivity gets higher along with the gas concentration rising. Users can convert the change of conductivity to correspond output signal of gas concentration through a simple circuit.
MQ-6 gas sensor can detect kinds of flammable gases, especially has high sensitivity to LPG (propane). It is a kind of low–cost sensor for many applications.
Applications :
It is widely used in domestic gas leakage alarm, industrial flammable gas alarm and portable gas detector.
Technical parameters :
Model MQ-6
Sensor Type Semiconductor
Standard Encapsulation Bakelite,Metal cap
Target Gas LPG
Detection range 300~10000ppm(Propane)
Standard Circuit Conditions Loop Voltage Vc ≤24V DC
Heater Voltage VH 5.0V±0.1V AC or DC
Load Resistance RL Adjustable
Sensor character under standard test conditions Heater Resistance RH 26Ω±3Ω(room tem.)
Heater consumption PH ≤950mW
Sensitivity S Rs(in air)/Rs( in 2000ppm C3H8)≥5
Output Voltage Vs 2.5V~4.0V (in 2000ppm C3H8)
Concentration Slope α ≤0.6(R3000ppm/R1000ppm C3H8)
Standard test conditions Tem. Humidity 20℃±2℃;55%±5%RH
Standard test circuit Vc:5.0V±0.1V; VH:5.0V±0.1V
Preheat time Over 48 hours
Reference Circuit :

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