Semiconductor Ozone Sensor MQ131(High Concentration)


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  • Semiconductor-Ozone-Sensor-MQ131(High-Concentration).png

Summary:

Sensitive material of MQ131 gas sensor is semiconductor metallic oxide, which with high 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 gases, such as Cl2, and NO2 etc. It responses oppositely to organic interference gases, compared with O3. 

Feature:

*Good sensitivity and quick response to ozone in wide range

*long lifespan

*low cost

*simple drive circuit

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APPLICATION

Other Detector

Formaldehyde detector is an instrument for detecting formaldehyde. Generally, semiconductor sensors and electrochemical sensors are used to realize the rapid semi-quantification of formaldehyde in indoor air on the spot, which is characterized by simple structure, small size, intuitive,easy to carry and use.

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PARAMETER

Specification Product Size

Technical Data Sheet

Model MQ131
Sensor Type Semiconductor
Standard Encapsulation Bakelite, Metal cap
Target Gas Ozone
Detection range 10~1000ppm 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 31Ω±5Ω (room temp.)
Heater consumption PH ≤900mW
Sensitivity S Rs(in 200ppm O3) / Rs(in air)≥2
Output Voltage △Vs ≥1.0V(in 200ppm O3)
Concentration Slope α ≤0.6( R10ppm /R100ppm 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
Oxygen content 21% (not less than 18%, (oxygen concentration will affect the initial value, sensitivity and repeatability of the sensor, please consult when using it under low oxygen concentration)
Life span 5 years

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