MQ131 Ozone Gas Sensor Module is a compact and highly sensitive sensor designed for detecting ozone levels in the ambient air. It utilizes tin dioxide (SnO2) as the sensing material, which has low conductivity in clean air but becomes more conductive in the presence of ozone. The module can detect ozone concentrations ranging from 10-1000 ppb for low concentrations and 10ppm-1000ppm for high concentrations. It features both analog output and TTL level digital output, making it compatible with microcontroller-based systems for direct integration.

Key Features:

1. Wide Detection Range: Capable of detecting ozone concentrations from 10PPB to 1000PPB (low concentration) and 10ppm to 1000ppm (high concentration).

2. Dual Signal Output:

   • Analog Output: Provides a voltage signal that varies with ozone concentration.

   • TTL Level Digital Output: Can be directly connected to a microcontroller's I/O port.

3. Quick Response and Recovery: The sensor quickly responds to changes in ozone levels and recovers to baseline values efficiently.

4. Trimmer Potentiometer: Allows setting of threshold levels for the digital output.

5. Long Life and Low Cost: Built for durability with a long operational lifespan and cost-effective design.

6. LED Indicators: Equipped with LEDs that indicate signal outputs and sensor status.

Specifications:

• Sensing Material: Tin dioxide (SnO2)

• Detection Range:

  • Low concentration: 10PPB to 1000PPB

  • High concentration: 10ppm to 1000ppm

• Analog Output Voltage: 0-5V DC

• Product Size: 30mm (L) x 20mm (W) x 28mm (H)

• Weight: 10 grams

• Power Supply: Operates with a voltage range suitable for most microcontroller setups

Precautions:

• Avoid Water Condensation: Prolonged exposure to condensation can reduce sensor sensitivity.

• High Gas Concentrations: Continuous exposure to high concentrations of gas can degrade sensor performance.

• Harsh Environments: High humidity, temperature, or pollution can negatively impact the sensor's longevity.

• Vibration: Avoid continuous vibration or shock to prevent sensor damage or disconnection.

Applications:

• Air Quality Monitoring: Ideal for monitoring ozone levels in environmental and industrial settings.

• Home Safety Systems: Used in devices that detect ozone leaks and ensure air safety.

• Industrial Equipment: Suitable for use in machinery that operates in ozone-sensitive environments.