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Comet WebSensor - remote CO2 concentration thermometer hygrometer with Ethernet interface, duct mount


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Comet WebSensor - remote CO2 concentration thermometer hygrometer with Ethernet interface, duct mount

Duct mount CO2 concentration t-line WebSensor.

Web Sensor with built-in concentration CO2, temperature, relative humidity sensor for duct mount.

A multiple point CO2 and temperature adjustment procedure leads to excellent CO2 measurement accuracy over the entire temperature working range; this is a must for process control and outdoor applications. The dual wavelength NDIR CO2 sensing procedure compensates automatically for ageing effects. The CO2 module is highly resistant to pollution and offers maintenance free operation and outstanding long term stability.

The CO2 concentration is shown on the display or signaled by a color LED.



  • Temperature
  • Relative humidity
  • Counted values (dew point…)
  • CO2


  • Measuring range -30 to +60 °C
  • Accuracy ±0.4 °C
  • Resolution 0.1 °C


  • Measuring range 0 to 100 % RH
  • Accuracy ± 2,5 % RH
  • Resolution 0.1% RH


  • Measuring range -60 to +80 °C
  • Accuracy ±1.6°C at ambient temperature T<25°C and RH>30%
  • Resolution 0.1 °C

      CO2 SENSOR

      • 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 Ethernet
              • Measuring interval 15 s
              • Communication protocol WWW, ModbusTCP, SNMPv1, SOAP, XML
              • Alarm protocols E-mail, SNMP Trap, Syslog
              • Power 9-30 Vdc
              • Protection class IP30 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
              • communication protocols SNMP, Modbus TCP, SOAP, XML
              • webserver to display current and recorded values
              • alarm indication via email
              • selected models with PoE
              • data analysis in COMET Database software


                Comet Database One Click Installer (20.1-II)

                Database Viewer dbapi 20.1

                TSensor (3-4-1-0)

                Sensor Reader (2-0-6-0)

                Conversions - application for recalculation of values


                Terms and Conditions COMET System s.r.o.


                Instruction Manual

                Quick Start Manual

                Declaration of Conformity

                COMET Cloud security

                How to add WebSensor to COMET Cloud



                CATALOG - CO2

                CATALOG - WebSensor with Ethernet output

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