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Smart Gas Detector for Sulfur Dioxide EVIKON E2639-SO2-2K

  • 4 variant

Smart Gas Detector for Sulfur Dioxide EVIKON E2639-SO2-2K

EVIKON
  • Product code: E2639-SO2-2K
  • Manufacturer code: E2639-SO2-2K
  • Warranty: 2 years

Smart sulphur dioxide (SO2) detector EVIKON E2639 with a range of 0...2000 ppm. Durable IP65-rated enclosure, 3 relays, RS485 Modbus communication, and built-in LED/audible alarm. More information

  • Availability

    Out of stock - can be requested

  • Out of stock  
Price excluding VAT € 864,00
Price with VAT 21 % € 1 045,44

Parameters and catalogs

Detector type Stationary
Equipment Siren 85dB, LED
IP Rating IP 65
Output signal ModBus RS485, 3x SPDT relay, 2x Analogue output 4-20mA
Power Supply 14...36 VDC
Type of gas SO2 - Sulphur Dioxide
Weight 0.50 kg

E2639-SO2 is a detector designed for monitoring high concentrations of sulphur dioxide in the air. The device is equipped with a temperature-compensated sensor that ensures reliable detection and stable measurement, and it is housed in a wall-mounted enclosure with IP65 protection. The E2639 features three SPDT relays with a maximum load of 250 VAC 5 A. Two relays are used for so-called two-stage detection. The third relay indicates a sensor fault. Communication with higher-level systems is provided by the RS485 Modbus RTU digital interface, complemented by two 4–20 mA analogue outputs. In addition, the device includes four LEDs and an audible alarm, which immediately alert operators to any exceedance of the set limit directly at the installation site – without the need to monitor a remote control system. 

Typical applications

The E2639-SO2 detector is intended for monitoring sulphur dioxide in environments such as wineries and food processing facilities, where SO₂ is used as a preservative, as well as thermal power plants and industrial boiler houses, sulphuric acid production plants, paper mills and pulp mills, refrigeration equipment, and other enclosed spaces where SO₂ may accumulate.

File:Sulfur-dioxide-3D-vdW.png

Sulphur dioxide (SO₂)

Sulphur dioxide is a colourless gas with a sharp, choking odour that is easily recognisable even at low concentrations. It is produced mainly by the combustion of sulphur-containing fossil fuels such as coal and oil, and also during industrial processes, for example in the production of sulphuric acid or metal smelting. Even short-term exposure to sulphur dioxide can cause irritation of the eyes, nose and respiratory tract, while higher concentrations are particularly dangerous for people with respiratory conditions.

Smart communication – ideal for fire alarm systems

The E2639 detector combines the advantages of an autonomous safety device and an intelligent communication node. It is designed for seamless integration with fire alarm systems (EPS) and offers a wide range of outputs for comprehensive control:

  • Autonomy: 3× volt-free SPDT relays for direct control of equipment or safe system shutdown.
  • Connectivity: Dual RS485 Modbus RTU interface for digital export of measured data in real time to a higher-level system (BMS).
  • Control: 2× 4–20 mA analogue outputs intended for precise control of the ventilation frequency inverter.
E2639 detector
Easy installation

Easy installation

The E2639 is equipped with three M20 cable glands and a dual terminal block for Modbus RTU. The duplicated Modbus RTU terminals simplify and speed up bus wiring for data readout to a higher-level system. No more inserting two conductors into one terminal. Thanks to the M20 glands, all required outputs can be connected conveniently.

Factory settings:

  • Measuring range: 0...2000 ppm
  • ALARM1 (RE1): 500 ppm
  • ALARM2 (RE2): 1000 ppm
  • ALARM3 (RE3): sensor fault
    • Automatic alarm reset after ventilation
  • Analogue outputs: 4-20mA = 0..2000 ppm
  • Modbus RTU address: Baud rate 9600, Parity None, Stop bits 1, Slave ID 1

Key features

  • Sensor type: Electrochemical sensor
  • Measuring range: 0...2000 ppm
  • Resolution: 1 ppm
  • T90 response time: approx. 33 s
  • Recommended recalibration interval: 6 months
  • Estimated sensor lifetime: > 2 years
  • 1-year warranty on the sensor itself (2 years on the entire device excluding the sensor)

Calibration certificate

Each detector package includes the original manufacturer's calibration certificate in English, confirming the accuracy and correctness of measurement at the time of leaving the factory.

We respond to your product queries as quickly as possible, usually within 24 hours.

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