Carbon Dioxide Detector-Transmitter E2638-CO2-10K

Evikon MCI
  • Stable long-life optical NDIR gas sensor
  • Range 0...10 000 ppm CO2
  • 2 × 4-20 mA or 0-10 V, RS485
  • Ambient pressure compensation option
  • Attached or remote sensor options
  • Relay or LCD indicator option


Carbon Dioxide transmitter E2638-CO2-10K is a member of new PluraSens® family of multifunctional measurement instruments.

Applications include HVAC and air quality control in public, office and industrial buildings, greenhouses, underground parkings, boiler houses, and other areas, where potentially toxic concentration of carbon dioxide can accumulate.

The instrument utilises optical NDIR gas sensor with excellent repeatability, stability and long lifetime. Ambient pressure compensation (in the range 0,5...2 bar of absolute pressure) is available as an option.

To connect the detector to safety or building automation systems use two analog outputs and RS485 digital interface with industry standard Modbus RTU protocol. We recommend to set the output scale within 20-100% of the detection range.

Two relays with closing contact (option) may be used for remote signalling or ventilation control. Two alarm set-points are user settable within 5-95% of the detection range.

The device is available with either attached or remote sensor probe (default cable length is 3 m).

A version with an LCD indicator is available.


Calibration CO2
Sensing method long-life optical NDIR sensor
Sampling method diffusion
Detection ranges 0...10 000 ppm CO2
Resolution 1 ppm CO2
Accuracy ± (50 ppm + 3% of value) CO2
Power supply 11...30 VDC
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, IP65
Dimensions H90 × W145 × D55 mm
Operating conditions 0...+50 °C, 0...85% RH