Introduces the features, specifications, installation and use of the HygroFlex HF4 Humidity Temperature Transmitter
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.
| 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 |
The electronics operating range is limited to -40…60 °C.
Yes, the HF45 model is available with RS-485, USB + RS-485, or Ethernet (TCP/IP) + RS-485 interfaces.
It is based on the ROTRONIC AirChip 3000 digital technology.