Ethylene C2H4 Transmitter E2638

Ethylene detector-transmitter is suitable for applications in fresh produce in cool rooms or storage areas to monitor your ethylene levels. Keep safe levels of ethylene with built-in or external alarms.


  • Humidity compensated electrochemical sensor
  • Range 0…10 / 0…200 / 0…1500 ppm C2H4
  • Resolution 0,1 / 1 / 5 ppm C2H4
  • Two SPST relays option
  • 2 × 4-20 mA or 0-10 V, RS485

Ethylene detector-transmitter E2638-C2H4 is a member of new PluraSens® family of multifunctional measurement instruments.

Applications include chemical and polymer industry, agriculture, fruit storage and ripening and other areas requiring precise measurement of ethylene concentration.

The instrument utilises a fully calibrated and temperature compensated electrochemical gas sensor with excellent repeatability, stability and long lifetime. Due to a special technical solution for humidity compensation (available as an option), the detector may be used even at humidity levels up to 100% RH.

Two relays with closing contact (optional) may be used for remote signalling or concentration control. Two alarm set-points are user settable.

Two analog outputs and RS485 digital interface with industry standard Modbus RTU protocol can be used to connect the detector to safety or building automation systems.

Technical Data
Calibration ethylene C2H4
Sensor type electrochemical
Sampling method diffusion
Detection range 0…10 ppm C2H4
0…200 ppm C2H4
0…1500 ppm C2H4
Resolution 0,1 / 1 / 5 ppm C2H4
Repeatability < 2 % of signal
Sensor lifetime 2 years
Power supply 12…36 VDC (default),
24 VAC or 230 VAC as options
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),
Enclosure grey ABS plastic, wall mount, IP65
Dimensions H90 × W145 × D55 mm
Operating conditions -20…+50 °C, 15…90 %RH
with humidity compensation up to 100 %RH

The following features are available as an option:

  •  Two relays RE1 and RE2 with closing contacts. Relay outputs can be used to
    switch alarm sirens, ventilation fans, shut-off valves, or other actuators.
  • Acoustic (85 dB buzzer) and visual (red and green LED) signaling.
  • 24 VAC or 230 VAC as options for power supply module.
  • LCD indicator Remote or integrated.
  • LED Visual Alarms
  • Remote probe.

E2638 Sensors are available in:

  • Ammonia NH3-E
  • Ammonia NH3-P
  • Carbon dioxide CO2
  • Carbon Monoxide CO
  • Chlorine CL2
  • Combustible Gas LEL
  • Ethylene C24H
  • Ethylene Oxide ETO
  • Hydrogen Sulfide H2S
  • Methane CH4
  • Nitric Oxide NO
  • Nitrogen Dioxide NO2
  • Nitrous Oxide N2O
  • Oxygen 02
  • Ozone 03
  • Refrigerant HFC
  • Solven Vapors PID
  • Solvent Vapors VOC
  • Sulfur Dioxide SO2
  • Sulfur Hexafluoride SFC


Other Evikon Sensors available – Evikon Sensors

Pacific Data Systems Australia PTY LTD is an authorized distributor of Evikon. Evikon is an instrumentation company, specializing in the development, manufacturing, and marketing of sensor-based electronic measurement instruments for industrial and building automation applications.

The device utilises a fully calibrated and temperature compensated electrochemical gas sensor with exceptional repeatability, balance and long lifetime. Due to a unique technical solution for humidity compensation (available as an alternative), the detector can be used even at humidity levels up to a 100% RH. two relays with closing contact (optionalcan be used for far off signalling or concentration control. two alarm set-points can be programmed. Two analogue outputs and RS485 digital interface with industry standard Modbus RTU protocol may be used to connect the detector to safety or building automation systems.

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