Starting at $380.00

Not in stock. Usually ships in 2-3 weeks [?]

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This product requires a HygroClip2 probe which is not included.


  • 2-wire, 3/4-wire and digital models available
  • Use with HygroClip2 probes
  • ±0.8%rh / 0.2K accuracy (probe dependent)
  • 0.3%rh / .05°C repeatability
  • <1%rh / <1°C per year long term stability
  • Less than 10 sec response time τ 63
  • -50 to 200°C / 0 to 100%RH measurement (probe dependent)
  • Output calculated psychrometric parameters
  • User scalable output signals

The Rotronic HygroFlex5-series is the latest development in transmitters for humidity, temperature and dew point. The innovative HygroFlex5-series features the possibility to output all psychrometric calculations as an analog signal.

The HygroFlex5-series is compatible with HygroClip2 probes with integrated AirChip3000 technology - which achieve a degree of accuracy not seen before. Advances in sensor technology and integration allow the Rotronic HygroFlex HF52-, HF53- and HF55- transmitters to provide superb precision and state-of-the-art functionality, taking humidity, temperature and dew point measurements to a whole new level of performance and reliability. AirChip3000 technology compensates humidity and temperature over 30,000 reference points, has a 2000 data point memory, calculates dew/frost point, has sensor auto-diagnostics and automatic correction.

The HygroFlex5-series has an optional backlit graphic display of measured values with trend indicators. Wall or duct mount versions with robust industrial housing are available. The Rotronic Hygroflex5-series transmitters have two freely selectable and scalable analog outputs. Units are available as 2-wire (HF52), 3/4-wire (HF53) and digital (HF55) transmitters. The optional digital outputs allow integration on a network via RS485, Ethernet and wireless connections.

Rotronic HygroFlex5-series Applications

The HygroFlex5-series is ideal for all applications were exact measurement of humidity and temperature is of decisive importance.

  • Food and pharmaceutical industry
  • Printing and paper industry
  • Meteorology
  • Agriculture
  • Climatology

Required Components

These additional components are required for the operation of your product. We strongly advise you to purchase these components unless you already own them or own a suitable alternative.

Rotronic HygroClip2 Probes
HygroClip2 probes with AirChip3000 technology offering ±0.8 %rh and ±0.1 K accuracy
In Stock


Rotronic Calibration Devices
Various calibration devices for Rotronic probes


Please consider these optional accessories.

Rotronic HW4 Software
HW4 software for Rotronic HygroPalm humidity meters available in four editions
In Stock