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Smart sulphur dioxide (SO2) detector EVIKON E2639 with a range of 0...50 ppm. Durable IP65-rated enclosure, 3 relays, RS485 Modbus communication, and built-in LED/audible alarm. More information
Out of stock - can be requested
| 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 ambient 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 an RS485 Modbus RTU digital interface, complemented by two 4–20 mA analogue outputs. In addition, the device includes four LEDs and an audible alarm to immediately alert operators to any exceedance of the set limit directly at the installation site – without the need to monitor a remote control system.
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 and pulp mills, refrigeration equipment, and other enclosed spaces where SO₂ may accumulate.
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.
The E2639 detector combines the benefits 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:
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 reading into a higher-level system. No more inserting two conductors into a single terminal. Thanks to the M20 cable glands, all required outputs can be connected conveniently.
Factory settings:
Each detector package includes the original manufacturer's calibration certificate in English, confirming the accuracy and correctness of measurement at the time it leaves the factory.
We respond to your product queries as quickly as possible, usually within 24 hours.
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