Carbon Dioxide Detector
  • Stable long-life photoacoustic or optical NDIR sensor
  • Range 0...10 000 ppm / 40 000 ppm / 5 %vol CO2
  • Resolution 1 ppm / 10 ppm / 0.01 %vol CO2
  • Two SPST relays (option)
  • 2 × 4-20 mA or 0-10 V, RS485

Carbon Dioxide detector-transmitter E2638-CO2 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 a fully calibrated and temperature compensated photoacoustic or optical NDIR gas sensor with excellent repeatability, stability and long lifetime.

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 carbon dioxide CO2
Sensor type photoacoustic
optical NDIR
Sampling method diffusion
Detection range 0...10 000 ppm (10K) CO2
0...40 000 ppm (40K) CO2
0...5 %vol (50KN) CO2
up to 100% CO2 on request
Resolution 1 ppm for 10K
10 ppm for 40K
0.01%vol for 50KN
Sensor lifetime up to 10 years for 10K/40K
up to 5 years for 50KN
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 -40...+60 °C, 0...100 %RH