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Smart refrigerant detector (R134a) EVIKON E2639 with a range of 0...2500 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 | HFC Refrigerants - R134a |
| Weight | 0.50 kg |
Evikon E2639-HFC(R134a) is a detector designed for monitoring high concentrations of R134a refrigerant 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 via 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 to immediately alert operators to any exceeded threshold directly at the installation site – without the need to monitor a remote control system.
The E2639-HFC detector is intended for monitoring R134a refrigerant leaks in environments such as plant rooms, air-conditioning and refrigeration equipment, refrigerant storage areas, or other installations where refrigerant concentrations need to be monitored. The device provides early leak detection, helping to minimise the risks associated with refrigerant leakage while protecting both the environment and the equipment.
R134a is a synthetic refrigerant widely used in refrigeration and air-conditioning systems. It is a colourless gas with a faint odour and low toxicity. Although it is non-flammable, its release may impair air quality or contribute to greenhouse gas emissions. Monitoring R134a leaks is essential for maintaining equipment safety and complying with environmental standards.
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 data readout to 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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