SDC-H1T - Duct Mounted


Active humidity transmitter and temperature sensor for duct mounting

The SDC-H1T measures relative humidity with a unique capacitive sensor element. The applied measuring technology guarantees excellent reliability and long term stability. Using a display and programming accessory, the user has the option to read out and reset minimum and maximum values.

The sensing element for the temperature is either a glass packed thermistor with a negative temperature coefficient, a platinum film or nickel thin layer based probe. Its resistance changes according to the temperature. The change follows a specified curve.


  • Humidity and temperature measurement for supply and return air ducts in heating, ventilation and air conditioning applications
  • Recording of minimum and maximum values for critical environments
  • Supervision of critical humidity and temperatures


  • Humidity and temperature measurement for air ducts
  • With AES4: High humidity-anti-creep and reconditioning functionality
  • Replaceable sensor element
  • 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
  • Selectable averaging signal
  • Optional LCD display (OPC-S) or external display (OPA-S)
  • Status LED


 Item name  Item code   Description  Length
 SDC-H1Tn10-08-A3-1  40-300148


  Signal converter for duct mounting,
  incl. cable gland AMC-1 and temperature
  sensor element AES1-HTn10-A3 (3% RH)


  8 cm

 SDC-H1Tn10-16-A3-1  40-300149  16 cm


OPC-S - Built-in Display
Operation and display for intelligent duct and outdoor transmitters
OPA-S - Remote Display
Operation and display for intelligent transmitters
AES3-HTx / AES4-HTx - Humidity/Temperature + passive Sensor
For indoor, outdoor and duct humidity/temperature transmitters with additional passive temperature element
AMC-1 - Cable Gland
For indoor, outdoor and duct transmitters
AMC-2 - Conduit Connector
For indoor, outdoor and duct transmitters
AMS-1 - Wheather Shield
For outdoor or duct transmitters
AMF - Duct Mounting Flange
Duct mounting flanges


Operation Manual

Install Sheet

Application Notes