SDC-C1 - Duct Mounted


Duct mounted CO2 transmitter

The CO2 concentration is measured through non-dispersive infrared (NDIR) waveguide technology with ABC automatic background calibration algorithm. The applied measuring technology guarantees excellent reliability and long term stability. The microprocessor samples the CO2 once per second. It calculates an averaging signal over a preset number of seconds and generates the output signal.  Ranges can also be set by using the internal or external display and programming module (OPC-S or OPU-S).


  • Demand based ventilation for homes and offices based on measurement of the CO2 concentration. Preset standard measuring range 0...2000 ppm, max. possible range 0...5000 ppm
  • Recording of minimum and maximum limits for critical environments
  • Direct control of extraction fan


  • CO2 measurement for air ducts
  • Minimum and maximum value memory
  • 0...10 V, 0...20 mA or 2...10 V. 4...20 mA measuring signals selectable with jumpers
  • Optional alternative signal ranges programmable
  • May be used as simple P-controller
  • Selectable averaging signal
  • Optional internal or external display (OPC-S or OPU-S)
  • Status LED


 Item name  Item code   Description  Length
 SDC-C1-16-1  40-300152  CO2 transmitter for air duct,
  incl. cable gland AMC-1
6.2" (16 cm)


OPC-S - Built-in Display
Operation and display for intelligent duct and outdoor transmitters
OPU-S - Remote Display
Operation and display for intelligent transmitters
AMC-1 - Cable Gland
For indoor, outdoor and duct transmitters
AMC-2 - Conduit Connector
For indoor, outdoor and duct transmitters


Operation Manual

Install Sheet

Application Notes