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  • Analog Output - 4-20mA
  • Sensor Output - CO2+Temperature output
  • Mounting - 120mm air inlet from ducts
  • Measuring Range - CO2 0-5000 ppm

Specifications

CO2 Measurement Principle

  • Double wave length infrared technology (NDIR)

CO2 Measurement Range

  • 0-2000 ppm
  • 0-5000 ppm

CO2 Accuracy

  • f.s. 2000 ppm: ± (50 ppm +3 % of measurement)
  • f.s. 5000 ppm: ± (50 ppm +4 % of measurement)
  • (at 20° C, 50 %RH and 1013 hPa)

Power Supply

  • 16-40 Vdc
  • 24 Vac ± 10 %

Temperature Measurement Range (Models HD377BT and HD37V7BT)

  • 0 +50° C

Temperature Accuracy (Models HD377BT and HD37V7BT)

  • ± 0.3° C

Analog Outputs (According to the Model)

  • 4-20 mA, RL 10 kΩ

Case Material

  • ABS

Absorption

  • < 2 W

Startup Stabilization Time

  • 15 Minutes
  • To guarantee the stated accuracy

Response Time τ63%

  • 120 seconds
  • Wind speed of at least 1 m/s

Temperature Effect %

  • 0.2 %/°C CO2
  • Typical value

Atmospheric Pressure Effect

  • 1.6 %/kPa
  • Deviation compared to the value at 101 kPa

Long-term Stability

  • 5 % of the range / 5 years
  • Typical value

Calibration

  • At one point at 0 ppm
  • 400 ppm clear air
  • Automatic detection of theapplied CO₂ level

Operating Conditions

  • -5 to +50° C
  • 0 to 90 %RH
  • Without condensation

Storage Conditions

  • -10 to +60° C
  • 0 to 90 %RH
  • Without condensation

IP Electronics

  • TV models: IP21
  • TC models: IP65 (Probe Excluded)

Case Size

  • 80 x 84 x 44 mm
  • Probe excluded

Documentation

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