Rotronic HygroFlex 5 Laboratory Humidity Transmitters

Rotronic HygroFlex 5 Laboratory Humidity Transmitters

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Products & Services | Rotronic AG


Rotronic’s HygroFlex 5 series of humidity and temperature transmitters occupy an essential place in the range of laboratory humidity tools.

Combining the functions of hygrometer, thermometer and data transmitter, these laboratory humidity transmitters combine industry-leading levels of precision, accuracy and functionality.

Design and Features

All HF5 Series laboratory humidity transmitters incorporate recent advances in sensor technology and integration. Any HF5 Series transmitter can be paired with the wide variety of relative humidity and temperature probes in the Rotronic portfolio.

The HygroFlex HF52, HF53, HF54, HF55 and HF56 humidity transmitters are all compatible with HygroClip2 probes The HF5 can transform the digital signal from a HC2 probe to an analogue signal for further relay, networking and application.

HF5 also incorporates integrated AirChip3000 technology that allows HC2-S probes to achieve an unprecedented degree of accuracy, down to under 0.8 per cent relative humidity (rh) and also in temperature measurement, to accuracy of less than < 0.1 K at 23 °C.

Applications and features

The Rotronic HF5 series measure relative humidity and temperature and calculate all psychrometric parameters. These laboratory humidity and temperature tools perform vital functions in the fields of pharmaceuticals, chemistry and HVAC.

HF5 versions are available with local display or no without display for remote monitoring.

Horizontal or vertical mount versions are available for wall and duct mounting and can be supplied with metal housing.

Features and functions include:

  • Relative humidity and temperature measurement
  • Dew Point and other psychrometric calculations
  • Interchangeable probe for easy maintenance
  • Wide choice of probes to satisfy every application
  • Low voltage and mains versions
  • Freely scalable analogue signals
  • Various digital outputs available

Easy calibration

AirChip3000’s ‘smart’ features also allow probes to be calibrated and digitally adjusted independently from the transmitter, drastically reducing ‘down time’ required for annual calibration.

The HC2 probe is easily calibrated in the HygroGen2, placing the probe adjacent to transmitter for calibration or calibrating probe in situ using an extension cable. Additionally the HC2 probe can be setup as a simulator in order to calibrate the transmitter loop.


Rotronic HF5 Series Laboratory Humidity Tools

Dimensions HF52, HF53, HF54, HF55: 129 x 72 x 45 mm, HF56: 192 x 102 x 52 mm<
Weight 220 g / 500 g
Operating range electronics HF52 0: -25…60 °C / 0…100 %rh, HF53/54/55/56: -40…60 °c / 0…100 %rh, HF5X with screen -10…60 °C
Accuracy at 23 ±5 °C Probe dependent
Power supply / Power consumption 15…40 VDC or 12…28 VAC/ <100 mA
Psychrometric calculations All psychrometric values
Number of probe inputs 1
Initialisation time Typically <3 sec.
Display type Optional graphics display. Presentation configurable.
Backlight with Backlight
Alerting Sensor break or short circuit, programmable.
Alarm indicators Yes
Exploitation software ROTRONIC HW4.2
Probe adjustment by software Yes, with service cable
Probe adjustment by keypad display / keyboard
Firmware update With internet and HW4 software
Data processing via HW4 Graphics, statistics, analysis, qualification, etc.
Circuit type 2 -Wire or 3/4-Wire
Analogue outputs scaleable by the user Yes
Analog output signal (standard) 2 x 0…1 V, 0…5 V, 0…10 V, 0(4)…20 mA
Automatic load compensation Yes
Communication interfaces RS-458; USB; LAN/WLAN; PoE (Modus B)
Service Interface Mini USB (UART)
Enclosure material ABS / Aluminium (HF5xxS)
Cable connections M16 cable gland and screw terminals
IP protection rating IP65: Corresponds to UL94-HB protection class
FDA/GAMP compatibility FDA 21 CFR Part 11 and GAMP compatible



Click on Rotronic HygroFlex 5 Laboratory Humidity Transmitters for more information.
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Click on Products for more information on Rotronic measurement solutions.

HygroFlex5 - HF5 Laboratory humidity transmitter Laboratory humidity transmitter (Wall version with display)

HygroFlex5 – HF5 Laboratory humidity transmitter Laboratory humidity transmitter (Wall version with display)

HygroFlex5 - HF56 Laboratory humidity transmitter - 240 VAC (Duct version with display)

HygroFlex5 – HF56 Laboratory humidity transmitter – 240 VAC (Duct version with display)

HygroFlex5 - HF56 Laboratory humidity transmitter

HygroFlex5 – HF56 Laboratory humidity transmitter

Supplier Information
Supplier: Rotronic AG
Address: Grindelstrasse 6, CH-8303 Bassersdorf, Switzerland
Tel: +41 44 838 1144
Fax: +41 44 838 1487

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