MQ131 Low Concentration Ozone Gas Sensor
- • Detection Gas: Ozone, O3
- • Detection Range: 10~1000ppb Ozone
- • Application: domestic ozone concentration alarm
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.

Description:
Four characteristics
with the signal output indicator;
dual signal output (analog output, and TTL level output);
TTL output valid signal is low; (output low signal light, which can be accessed microcontroller IO port)
analog output increases with the concentration, the higher the concentration the higher the voltage;
the ozone gas with high sensitivity (detection concentration range 10PPB-2PPM)
with a long service life and reliable stability;
rapid response and recovery characteristics;
with mounting holes to facilitate fixed installation;
Features:
- Ozone sensor: MQ-131
- Sensor type: seminductor
- Ozone detection range: 10~1000ppb
- Power supply: 5 Vdc
- Status LED for power and output signal
- Digital and analog output:
- analog output (0-5 VDC): the voltage increases as the ozone concentration in the air increases
- digital output: TTL (0-5 VDC): to be used to get a threshold value, set via trimmer, to manage it via a microcontroller
- With a long life and reliable stability
- Fast response characteristics
- With mounting holes to facilitate fixed installation
- The probe can plug design for easy testing
- It can be used to create devices that can detect ozone at home and atmospheric environment
- Size: 32mm * 22mm * 30mm (L * W * H)
