Specifications:
- Model no.: MQ131 or MQ 131
- Sensor Type: Semiconductor
- Concentration: Please select in variation
- Precision: ±1ppm
Detection Target:
- Primarily: Ozone (O3).
- It can also detect other strong oxidizing gases like chlorine (Cl2) and nitrogen dioxide (NO2).
Operating Principle:
- It uses a metal oxide semiconductor material whose conductivity changes when exposed to ozone.
- The conductivity decreases as the ozone concentration increases.
Applications:
- Ozone concentration alarms (domestic and industrial).
- Portable ozone detectors.
- Air quality monitoring.
Important Considerations:
- Preheating: The sensor requires a significant preheating period (often over 48 hours) for accurate readings.
- Calibration: Proper calibration is essential for accurate measurements.
- Sensitivity: There are variations of the MQ131 sensor, some for low concentration ozone detection, and others for high concentration detection. It is important to know which version is being used.
- Interference: The sensor can be affected by other oxidizing gases, which can lead to inaccurate readings.
- Heater Current: The heater within the sensor draws a considerable amount of current, so proper power supply planning is crucial.
Other Useful Products:
MQ-3 (Alcohol ethanol Gas Sensor)
MQ-5 (LPG or Natural Gas Sensor module)
MQ-7 (Carbon Monoxide Gas Sensor)
MICS-6814 – Air Quality Sensor (NH3 Nitrogen Oxide Gas Sensor)
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