Key facts
- Brand
- Rotronic
- Model
- HF4
- Category
- Other Electronics
- Documents
- 3
- Languages
- EN
- Last added
- 2023-10-20
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Rotronic HygroFlex HF4 Humidity Temperature Transmitters User Guide
The Rotronic HygroFlex HF4 series is designed for fixed installation in HVAC and light industrial applications, measuring temperature, relative humidity, and dew or frost point with high accuracy. The series utilizes ROTRONIC AirChip 3000 digital technology to offer user-configurable settings, automatic sensor drift compensation, and fail-safe modes. It supports both analog output signals (HF42 and HF43) for remote transmission and digital interfaces (HF45) for simultaneous reading of parameters.
Read onlineRotronic HF4 specifications
| Measured parameters | Relative humidity, Temperature, Dew or frost point |
|---|---|
| Operating range | 0 to 100 %RH and -50 to 100°C |
| Electronics operating range | -40…60 °C |
| Power supply (HF42) | 10…28 VDC |
| Power supply (HF43) | 15 to 40 VDC or 12 to 28 VAC |
| Power supply (HF45) | 5 to 40 VDC or 12 to 28 VAC |
| Sensors | ROTRONIC Hygromer® IN1 capacitive sensor and Pt100 RTD |
Source: Rotronic HygroFlex HF4 Humidity Temperature Transmitters User Guide
All Rotronic HF4 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the operating range of the HF4 electronics?
The electronics operating range is limited to -40…60 °C.
From: Rotronic HygroFlex HF4 Humidity Temperature Transmitters User Guide
Does the HF4 series support digital interfaces?
Yes, the HF45 model is available with RS-485, USB + RS-485, or Ethernet (TCP/IP) + RS-485 interfaces.
From: Rotronic HygroFlex HF4 Humidity Temperature Transmitters User Guide
What firmware version is required for this manual?
This manual applies to all instruments of the HF4 series with firmware version 3.0 or higher.
From: Rotronic HygroFlex HF4 Humidity Temperature Transmitters User Guide
Can the HF4 calculate dew point or frost point?
Yes, using the ROTRONIC HW4 software, the HF4 can be configured to calculate either the dew point or the frost point.
From: Rotronic HygroFlex HF4 Humidity Temperature Transmitters User Guide
What firmware version is required for this manual?
This manual applies to all instruments of the HF4 series with firmware version 3.0 or higher.
From: Rotronic HF4 Humidity Temperature Transmitters User Guide
Can the HF4 calculate dew point?
Yes, using the ROTRONIC HW4 software, the HF4 can be configured to calculate either the dew point or the frost point.
From: Rotronic HF4 Humidity Temperature Transmitters User Guide