Starting at $510.00
  • Usually ships in 2-3 weeks



  • Integrated sensors
  • ROTRONIC Hygromer IN-1 humidity sensor
  • Pt100 1/3 Class B temperature sensor
  • ±2.0 %rh / 0.3 K accuracy
  • < 0.02 %rh / 0.01 K resolution AirChip3000
  • Less than 10 sec response time τ 63


The new Rotronic HygroFlex3-Series Humidity Transmitter is the latest development in HVAC transmitters for relative humidity and temperature. Based on AirChip3000 technology, the Rotronic HygroFlex3-Series achieve a degree of accuracy not seen before.

AirChip3000 Technology

AirChip3000 technology compensates humidity and temperature over 30,000 reference points, has a 2000 data point memory, and has sensor auto-diagnostics and automatic correction. AirChip3000 also includes active alarming and information, as well as ASIC (Application Specific Integrated Circuit); micro-controller and EEPROM on one chip.

Rotronic HygroFlex3-series Applications

The HygroFlex3-series transmitter is ideal for all applications where exact humidity and temperature measurement is critical. The transmitters can be used in a variety of fields including:

  • Heating, ventilation, air conditioning
  • Greenhouses
  • Museums
  • Warehouses
  • Libraries
  • Railway stations
  • Climate control in office buildings