Sulfur Dioxide Detector-Transmitter

  • Stable long-life electrochemical gas sensor
  • Typical detection range 0...20 ppm SO2
  • Resolution 0.1 ppm SO2
  • Attached or remote sensor
  • 2 × 4-20 mA / 0-10 V, RS485
  • Two SPST relays


Sulfur dioxide detector-transmitter E2638R-SO2 is a member of new PluraSens® family of multifunctional measurement instruments.

Applications include wine-making, food and beverage industry, paper mills, wastewater treatment stationsб laboratories and other areas, where potentially toxic concentration of sulfur dioxide can accumulate.

The instrument utilises novel fully calibrated and temperature compensated electrochemical gas sensor with excellent repeatability, stability and long lifetime.

Two analog outputs and RS485 digital interface with industry standard Modbus RTU protocol can be used to connect the device to safety or building automation systems.

Two relays with closing contact may be used for remote signaling or ventilation control. The default alarm set-points are typically at 2 ppm and at 5 ppm. The flashing LEDs and an internal buzzer give alarms as well at two set-points.