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Smart hydrogen sulphide (H2S) detector EVIKON E2639 with a range of 0...2000 ppm. Durable IP65 protection, 3 relays, RS485 Modbus communication, and a 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 | H2S - Hydrogen sulphide |
| Weight | 0.50 kg |
E2639-H2S is a detector designed for monitoring high concentrations of carbon monoxide 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 an exceeded set limit directly at the installation site – without the need to monitor a remote control system.
The E2639-H2S detector is intended for monitoring hydrogen sulphide in environments such as wastewater treatment plants, sewer systems, paper mills, chemical plants, oil and natural gas processing facilities, and other industrial operations where this toxic gas may accumulate. The device helps prevent health risks associated with exposure to hydrogen sulphide and contributes to the safety of both personnel and operations.
Hydrogen sulphide is a colourless gas that can be recognised even at very low concentrations by its characteristic rotten egg smell. At higher concentrations, however, it causes paralysis of the sense of smell, so its presence cannot be reliably detected without a detector. It is formed mainly during the biological decomposition of organic substances containing sulphur, typically in sewers, wastewater treatment plants, agricultural operations, or during the extraction and processing of oil and natural gas. Exposure to hydrogen sulphide can cause irritation of the mucous membranes, nausea, or headaches even at low levels, while high concentrations pose an immediate threat to life.
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:
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 one terminal. Thanks to the M20 cable glands, all required outputs can be connected conveniently.
Factory settings:
Each detector package includes the manufacturer's original 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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