CO₂, RH and T Duct Mount Sensor

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  • Humidity
  • Temperature
  • CO₂


The EE850 is a 3 in 1 duct mounted transmitter ideal for demand controlled ventilation and building automation. It combines CO₂, humidity and temperature in an innovative and functional enclosure. The EE850 incorporates the E+E dual wavelength NDIR CO₂ sensor, which compensates for ageing effects, is highly insensitive to pollution and offers outstanding long term stability.

  • EE850 CO₂, humidity and temperature sensor for duct mounting

    The multi-point CO₂ and temperature factory adjustment leads to an excellent CO₂ measurement accuracy over the entire temperature working range.

    An optional adapter facilitates easy configuration and adjustment via the EE850 service interface.

    Typical Applications

    • Building automation
    • Demand controlled ventilation
    • Process control

    Key Features

    • E+E dual wavelength NDIR CO₂ working principle
    • CO₂ auto-calibration for excellent long term stability
    • Temperature compensation of the CO₂ measurement
    • High insensitivity to pollution
    • Humidity sensor protected by the E+E proprietary coating
    • Voltage or current outputs
    • Modbus RTU or BACnet MS/TP
    • Optional passive temperature sensor
    • Fast and easy installation
    • Easy user configuration and adjustment

    Technical data

    Measuring range CO₂
    0...2000 ppm
    0...10000 ppm
    Accuracy CO₂ - *mv - measured value
    < ± (50 ppm +2% of mv*)
    < ± (100 ppm +5% of mv*)
    Measuring range Humidity
    0...95 % RH
    Accuracy Humidity
    ±3 % RH (20...80 % RH)
    Measuring range Temperature
    -20...60 °C (-4...140 °F)
    Accuracy Temperature
    ±0.3 °C (±0.54 °F)
    Output Analogue
    0-5 / 10V or 4-20mA
    Output Digital
    Modbus RTU or BACnet MS/TP
    24 V AC/DC

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    Downloads EE850

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