Rotronic HygroFlex HF3 Transmitter User Guide

Introduces the features and characteristics of HygroFlex HF3 transmitters, including mechanical configurations and dimensions, power supply, measured parameters, calculated parameters, analog output signals, service connector, sensor protection, etc.

Brand: Rotronic
Document type: User Manual
Language: English
Pages: 27
File format: PDF
File size: 929 KB
Published: 16 October, 2023
Updated: 16 October, 2023
Model: HF3
MD5 checksum: D0AF894AE69AD06020969A2403A06482
PDF: Rotronic HygroFlex HF3 Transmitter User Guide PDF

About this manual

The document provides instructions for the Rotronic HygroFlex HF3 series transmitters, which measure relative humidity, temperature, and dew or frost point. These devices are designed for fixed installation in HVAC applications using ROTRONIC AirChip 3000 digital technology. The manual details two circuit types: HF32 (2-wire loop powered) and HF33 (3-wire with analog outputs).

What's inside

Overview
Mechanical configurations and dimensions
General description
User configurable settings and functions
Mechanical installation
Electrical installation
Operation
Maintenance
Firmware updates
Technical data

Specifications

Measured parameters	Relative humidity, Temperature, Dew or frost point
Power supply (HF32)	10...28 VDC
Power supply (HF33)	18 to 40 VDC or 13 to 28 VAC
Analog output resolution	16-bit

Frequently asked questions

What is the minimum supply voltage for HF32 with a 500 ohm load?

The minimum supply voltage is 20 VDC.

How can the HF3 be configured to calculate dew point?

Using the ROTRONIC HW4 software, the user can configure the HF3 to calculate either the dew point or the frost point.

What type of connector is used for the service interface?

The service connector uses a mini-USB type connector.

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