The HF3 transmitter series is designed for fixed installation in cost sensitive HVAC applications where conditions are within the range of 0 to 100 %RH and -40 to 60°C (-40 to 140°F). The key features of the HF3 will satisfy application requirements ranging from the most basic to demanding.
The HF3 transmitter is available in different configurations and has an extensive set of settings and functions that can be configured and enabled by the user with the ROTRONIC HW4 software.
In spite of its sophistication, the HF3 can still be used just as a simple conventional humidity and temperature transmitter. Whether you decide or not to take advantage of its full potential, the HF3 will let you have it your way.
Key Features
► Measures relative humidity and temperature, or humidity only, or temperature only
► Calculates the dew or frost point
► Integral probe - cannot be separated from transmitter. Duct (through-wall probe), wall and space (no apparent probe) configurations
► Operating limits: 0...100%RH and -40...60°C / -40...140°F (models with display: -10...60°C / 14...140°F)
► Accuracy at 23 °C: ± 2.0 %RH and ± 0.3 °C
► 2-wire, loop-powered and 3-wire models
► Supply voltage: 10 to 28 VDC (2-wire models) or 15 to 40 VDC / 12 to 28 VAC (3-wire models)
► Optional LC display (space mount model only)
► Configurable analog output signals (signal type, parameter and scale)
► Automatic RH sensor test with optional sensor drift correction
► Configurable fail safe mode - fixed output signals in the event of a humidity or temperature sensor failure
► Simulator function (fixed output signals) for on-site validation of the measurement loop
► Internal service connector for full access to the HF3 settings and functions
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