New HygroFlex Advanced HF5A from Rotronic combines humidity, temperature and Dew Point measurement with smartphone compatibility

A new and advanced transmitter for the combined measurement of humidity, temperature and Dew Point has been launched by Rotronic. The HygroFlex HF5A is designed for all applications where fast, accurate and repeatable measurement is critical. It features the latest near-field communication (NFC) technology, allowing it to be programmed and interrogated by a smartphone or NFC-equipped computer, helping to simplify operation and minimize setup time.

Key Features

The HF5A incorporates the latest NFC technology, enabling easy programming and interrogation via smartphone or NFC-equipped computer, significantly simplifying operation and reducing setup time.
Supplied as a compact, wall-mounted unit in a rugged IP65 sealed enclosure, the HF5A is built to withstand demanding environments.
Compatible with various humidity and temperature sensors, it covers a range from 0 to 100 %rh and -100 °C to +200 °C. Additional measurement options include CO₂ and differential pressure.
The front-panel LCD displays three measurement parameters simultaneously. Depending on operational status, readings are shown in green, orange or red
Both analogue 4–20mA and digital RS485 outputs are included as standard.

Enhanced Usability

The HF5A can be configured and monitored remotely using Rotronic’s HygroSoft app or PC software via a smartphone or laptop with an optional NFC-USB reader. These tools offer step-by-step on-screen instructions, ensuring a straightforward user experience.

Improvements from HF5A Compared to the HF5

The 2-wire starting time is now under 30 seconds, with LED or display indication turning
on after 10 seconds.
Access to RMS probes when using a 3- or 4-wire setup.
MODBUS RTU via RS485 on a screw terminal.
Front display LED shows operating status (Green/Orange/Red) and monitors analogue output.
NFC Interface: Equipped with an NFC interface, the HF5A can be accessed via a smartphone or an NFC Reader-equipped computer.

Probes and Customization

The HF5A comes with a choice of Rotronic’s interchangeable measurement probes. These provide rapid initialization and have been developed for use in harsh industrial, laboratory, and scientific environments, providing the flexibility for the new unit to be used in applications ranging from HVAC and printing to food and pharmaceutical production.

Standard Versions and Custom Options

Rotronic will manufacture six standard versions of the HygroFlex HF5A. These include:

Additionally, the company will offer customized options for orders of 20 units or more. Other options include a duct mounting kit and a version without the front-panel LCD.

Two analogue 2-wire versions

Two analogue 3- and 4-wire versions

Two combined analogue and digital 3- and 4-wire versions compatible with MODBUS RTU systems

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