MQ131 Low Concentration Ozone Gas Sensor

  • • Detection Gas: Ozone, O3
  • • Detection Range: 10~1000ppb Ozone
  • • Application: domestic ozone concentration alarm

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  • Principle Introduction
Principle Introduction:
Winsen Electronics, as a professional gas sensing solution provider with over 30 years gas sensor manufacture experience, offers Ozone O3 gas sensor.
Sensitive material of MQ131 gas sensor is WO3, which with lower conductivity in clean air. When the ozone gas exists, the sensor’s conductivity gets lower along with the gas concentration rising. Users can convert the change of conductivity to correspond output signal of gas concentration through a simple circuit.
MQ131 ozone gas sensor has high sensitivity to ozone, and also has sensitivity to strong oxide such as Cl2, NO2 &etc. It responses oppositely to organic interference gases.
Applications :
It is widely used in domestic ozone concentration alarm, industrial ozone concentration alarm and portable ozone concentration detector.
Technical parameters :

Tips:For more parameter information, please refer to the latest manual provided by salesman.

Model MQ131
Sensor Type Semiconductor
Standard Encapsulation Plastic cap
Target Gas Ozone
Detection range 10~1000ppb Ozone
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 34Ω±3Ω (room tem.)
Heater consumption PH ≤900mW
Sensitivity S Rs(in air)/Rs(in 200ppb O3)≥2
Output Voltage △Vs ≥1.0V(in 200ppb O3)
Concentration Slope α ≤0.6(R500ppb/R100ppb O3)
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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