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Comet CO2 concentration transmitter with 4-20mA output, built-in carbon dioxide sensor

Duct mount CO2 concentration transmitter with 4-20 mA output.

Green LED shines - CO2 concentration 0 to 1000 ppm
Yellow LED shines - CO2 concentration 1001 to 1200 ppm
Red LED shines - CO2 concentration 1201 ppm and more



  • CO2


  • Measuring range 0 to 2000 ppm
  • Accuracy ±(50ppm +2% from reading) at 25°C and 1013hPa
  • Resolution 1 ppm


  • Operating temperature -30 to +60 °C
  • Channels internal CO2 sensor
  • Output 4-20 mA
  • Configuration of output user adjustable from PC; measured range + value
  • Power 15-30 Vdc; 24 Vac
  • Protection class IP65 electronics; IP20 sesors
  • Dimensions 89 x 73 x 240 mm; stem length 130 mm
  • Weight approx. 260 g
  • Warranty 3 years


    * the features may vary depending on the device type

    • accurate measurement of Temperature, Relative humidity, Dew point, Atmospheric pressure, CO2, Two-state events
    • industrial or interior design with protection up to IP65
    • integrated sensors, external probe, duct mount design
    • ATEX design for potentially explosive atmospheres (zone 2) on selected models
    • relays output 250Vac / 8A or 50 V on selected models


    Conversions - application for recalculation of values


    3D model T5140

    Terms and Conditions COMET System s.r.o.


    Instruction Manual

    Quick Start Manual

    Declaration of Conformity



    CATALOG - Digital sensors and regulators with serial RS485/RS232 output

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