Winsen ME3-SO2 Gas Sensor

The ME3-SO2 electrochemical sensor detects gas concentration by measuring current based on the electrochemical principle. This involves the electrochemical oxidation process of sulfur dioxide (SO2) on the working electrode inside the electrolytic cell. The current produced in the electrochemical reaction of the target gas is in direct proportion to its concentration, following Faraday's law. The concentration of the gas is then determined by measuring the value of this current.

Electrochemical

• Expose To Extreme Conditions: Avoid exposing the sensor to temperatures and humidity levels outside the specified storage conditions to prevent damage or inaccurate readings.,
• Subject To High Pressure: Do not use the sensor under pressures outside the specified working pressure range of 90-110 kPa to avoid operational failure.,
• Handle Improperly: Avoid rough handling or physical shock to the sensor to maintain its structural integrity and functional accuracy.

• Follow Storage Conditions: Store the sensor at a temperature between -20°C and 50°C and humidity between 15% and 90% RH to ensure sensor longevity and accuracy.,
• Check Compatibility: Ensure the sensor is compatible with the industrial or environmental protection systems where it is to be used.,
• Regular Calibration: Regularly calibrate the sensor to maintain accuracy and reliability of the SO2 measurements.

• Description: The sensor can measure sulfur dioxide concentrations from 0 to 20 ppm.

• Description: The sensor has a response time of less than 30 seconds (T90) to reach 90% of the final reading when exposed to a target gas.

• Description: The sensitivity of the sensor is (0.55±0.15) µA/ppm, indicating the current change per ppm of SO2.

• Description: Connect the sensor to a measuring device or circuit with a load resistance of 10Ω. Ensure proper alignment and secure connections to prevent measurement errors.

The sensor is shipped with dimensions of 7 × 4 × 2 cm.