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CO2 Transmitter for HVAC ~ Duct Mount - EE850

Duct mounted carbon dioxide transmitters of EE850 series are designed for HVAC and Industrial applications. The CO2 sensing element uses the Non-Dispersive Infrared Technology (NDIR). A patented auto-calibration procedure compensates for drift caused by the aging of the sensing element and guarantees outstanding long term stability. Installed into a duct, a small flow of air will be established by convection through the probe into the transmitter housing and back into the duct. Inside the transmitter housing the air will diffuse through a membrane into the CO2 sensing element. The operation in closed loop air stream avoids pollution of the CO2 sensor. The instrument can be easily positioned in the duct with the standard mounting flange.

  • Measuring range for CO2: 0...2000ppm / 5000pp/10000ppm
  • Outputs: 0-5 / 10V, 4...20mA
  • Accuracy: 0...2000ppm: < ± (50ppm +2% of measuring value)
  • Accuracy: 0...5000ppm: < ± (50ppm +3% of measuring value)
  • Response time <100sec. at 3m/sec airspeed  in duct
  • Supply: 24V AC & 15-35VDC
  • Optional passive temperature sensor 2W ~ NTC, Pt1000 etc
Part No. Description Qty Availability Price
EE-85-2C35 C02 Transmitter Duct Type 200mm stem 0-2000ppm Not Available For Online Purchase, please contact one of our sales offices.
EE-85-5C65 Duct Mount CO2 Transmitter 200mm stem 0-5000ppm Not Available For Online Purchase, please contact one of our sales offices.
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Additional Information

Data sheet EE850 CO2 transmitter for duct mount 934 KB Download PDF
E+E brochure for HVAC with summary of all products 2190 KB Download PDF

Additional Information

Operating Instructions EE-850 862KB Download PDF