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Smart Gas Detector for Oxygen EVIKON E2639-O2-5Y

  • 2 variant

Smart Gas Detector for Oxygen EVIKON E2639-O2-5Y

EVIKON
  • Product code: E2639-O2-5Y
  • Manufacturer code: E2639-O2-5Y
  • Warranty: 2 years

Smart oxygen (O2) detector EVIKON E2639 with a measuring range of 0...25 %vol O2. Robust IP65 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 € 472,00
Price with VAT 21 % € 571,12

Product variants

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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 O2-Oxygen
Weight 0.50 kg

E2639-O2-5Y is a detector designed for monitoring high oxygen concentrations 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 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 exceeded limit directly at the installation site – without the need to monitor a remote control system. 

Typical applications

The E2639-O2 detector is intended for monitoring oxygen in environments such as industrial facilities, welding shops, filling stations, chemical laboratories, ship spaces, tunnels, and other enclosed or poorly ventilated areas where a dangerous drop or, conversely, an excessive increase in O₂ concentration may occur.

Oxygen (O₂)

Oxygen is a colourless and odourless gas, yet it is vital to life and makes up approximately 21% of the Earth's atmosphere by volume. It is essential for the respiration of humans and animals and plays a key role in many chemical and combustion processes. High oxygen concentrations can increase the risk of fire, while oxygen deficiency can be life-threatening. For this reason, monitoring oxygen concentration in enclosed or industrial spaces is essential for ensuring safety.

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 help simplify and speed up bus wiring for data readout to the 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:

  • Measuring range: 0...25 %vol O2
  • ALARM1 (RE1): 18 %vol O2
  • ALARM2 (RE2): 19 %vol O2
  • ALARM3 (RE3): sensor fault
    • Automatic alarm reset after ventilation
  • Analogue outputs: 4-20mA = 0...25 %vol O2
  • Modbus RTU address: Baud rate 9600, Parity None, Stop bits 1, Slave ID 1

Key features

  • Sensor type: Long-life electrochemical sensor
  • Measuring range: 0...25 %vol O2
  • Resolution: 0.01% vol O2
  • T90 response time: < 10 s
  • Recommended recalibration interval: 6 months
  • Estimated sensor lifetime: > 5 years
  • 1-year warranty on the sensor itself (2 years on the complete 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 production.

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

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