MQ-131

General Description:

The sensitive material of the MQ-131 gas sensor is O3 SnO2, which with lower conductivity in clean air. When Ozone gas exists. The sensor's conductivity is higher along with the gas concentration rising. Please use a simple electro-circuit and convert the change of conductivity to the corresponding output signal of gas concentration. MQ-131 gas sensor has a high sensitivity to Ozone, also sensitive to O3 CL2, NO2, etc.

Working Principle:

The MQ131 gas sensor utilizes a semiconductor-based chemo-resistive sensing mechanism to detect ozone in the air. Its tin dioxide (SnO2) sensing material changes electrical resistance when exposed to ozone molecules, thanks to a built-in heating element that elevates its temperature. This resistance change is converted into an electrical signal proportional to ozone concentration, providing accurate measurements. Calibration ensures precise readings, making the MQ131 sensor an effective tool for monitoring ozone levels in various environments.

Specifications:

1. Having an IC chip LM393 voltage comparator.
2. Operating Voltage (VDC): 3V-5V.
3. Mounting holes to facilitate fixed installation.
4. It has the signal output indicating LED.
5. Having the dual signal output (analog and TTL output).
6. Long working life and stable performance by MQ-131.
7. The ozone gas with high sensitivity (detection concentration range 10PPB-2PPM Ozone).
8. Operating Temperature: -10°C to 50°C

Applications:

1. Gas leakage detection
2. Home and industrial safety systems
3. Air quality monitoring
4. Environmental Monitoring
5. Industrial Processes