4-SO2-20 Sulphur Dioxide SO2 Gas Sensor, 0-20ppm SO2

Product Code: 2112B0421400

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4-SO2-20 gas sensor, 0-20ppm SO2

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4-SO2-20 Sulphur Dioxide SO2 gas sensor

Measuring Range: 0-20ppm SO2

Size: 4 SERIES, 3-electrode

Part no: 2112B0421400  (CLE-0421-400)


  • SO2 sensor in standard 4 series industry size
  • Proven high stability, reliability and fast response
  • Robust at humidity and temperature extremes
  • Compact sensor design
  • Low cost
  • Ideal for portable and fixed applications including industrial and environmental monitoring


This compact electrochemical sensor is a high quality, cost effective electrochemical cell for the detection of Sulphur Dioxide in air. The 3-electrode robust design is ideal for both portable and fixed applications in industrial and environmental monitoring. This version is available for low range 0-20ppm SO2 measurement.


Note: The graphic of this sensor is an example only and sensor cap/body colour may vary depending upon gas sensor type ordered or manufacturing modification. Please refer to individual datasheet for detailed information on this sensor and its dimensions.

Available options/alternatives:

– miniature i2c/voltage transmitter available for this sensor.

– 4-SO2-2000 gas sensor, 3-electrode, 0-2000ppm SO2