ROTRONIC HF65 - Manual (Page 27)

E-M-HF63_65-V1_11
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
Instruction Manual
Document Type
HygroFlex HF63/HF65 Humidity Temperature
Transmitters: User Guide
Document title
Page 27 of 34
© 2008; Rotronic AG E-M-HF63_65-V1_11
10 Technical data
10.1 Specifications
General HF63 HF65
Device type
Humidity temperature transmitter
with analog output signals Humidity temperature transmitter with
digital output
Circuit type 3-wire
Mechanical configuration types D and W
Power supply and connections
HF63 HF65
Supply voltage (VDD)
15…40 VDC or 12…28 VAC
85…265 VAC 5…40 VDC or 12…28 VAC
85…265 VAC
Nominal current consumption
(low voltage models)
< 50 mA
Model with USB interface: 50 mA
Model with Ethernet interface: 300 mA
Cable fittings
Terminal block and M16 cable grip or
½” conduit adapter
Connector (USB or Ethernet), terminal
block (power supply and RS-485) and
M16 cable grip or ½” conduit adapter
Polarity protection
(low voltage models)
Protective diode on V+
Humidity measurement
HF63 HF65
Sensor ROTRONIC Hygromer ® IN1
Measuring range 0…100 %RH
Measurement accuracy at 23 °C ±1.0 %RH
Repeatability 0.3 %RH
Long term stability < 1 %RH / year
Sensor time constant Typical 10 sec, 63% of a 35 to 80 %RH step change (1m/sec air flow at sensor)
Temperature measurement
HF63 HF65
Sensor Pt100 RTD, IEC 751 1/3 class B
Measuring range limits -100…150 °C / -148…302 °F
Measurement accuracy at 23 °C ±0.2 °C
Repeatability 0.05°C
Long term stability
< 0.1°C / year
Sensor time constant Typical 4 sec, 63% of a step change (1m/sec air flow at sensor)
Calculated parameters
HF63 HF65
Psychrometric calculations Dew or frost point (user configurable option)