Ethylene Oxide Detector-Transmitter E2638-ETO

Evikon MCI
  • Stable long-life electrochemical gas sensor
  • Ranges 0...20 / 0...100 ppm C2H4O
  • Attached or remote sensor
  • Two settable analog outputs 4-20 mA / 0-10 V
  • Digital interface RS485 Modbus RTU
  • Two SPST relays


Ethylene oxide detector-transmitter E2638R-EtO is a member of new PluraSens® family of multifunctional measurement instruments.

Applications include chemical and polymer industry, medicine (hospital sterilization facilities) and other areas where leakage or generation of ethylene oxide is possible.

The instrument utilises novel fully calibrated and temperature compensated electrochemical gas sensor with excellent repeatability, stability and long lifetime.

To connect the detector use two analog outputs and RS485 digital interface with industry standard Modbus RTU protocol.

Two relays with closing contact may be used for remote signaling or ventilation control. The flashing LEDs and an internal buzzer give alarms as well at two set-points.


Calibration ethylene oxide C2H4O
Sensing method electrochemical
Sampling diffusion
Detection range options 0...20 ppm
Repeatability < 2 % of signal
Sensor lifetime 2 years
Power supply 11...30 VDC or 24 VAC
Digital interface RS485, Modbus RTU protocol
Analog outputs 2 × 4-20 mA / 0-10 V, user settable
Output relays (option) 2 × SPST relays (closing contact),
250 VAC / 30 VDC, 5 A max
Enclosure light grey ABS plastic, wall mount, IP65
Dimensions H90 × W145 × D55 mm
Operating conditions -20...+50 °C, 15...90 %RH