ROTRONIC HF62 - Manual (Page 21)

E-M-HF62-V1_11
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
Instruction Manual
Document Type
HygroFlex HF62 Humidity Temperature
Transmitters: User Guide
Document title
Page 21 of 27
© 2008; Rotronic AG E-M-HF62-V1_11
10 Technical data
10.1 Specifications
General HF62
Device type Humidity temperature transmitter with analog output signals
Circuit type Two independent 2-wire, loop powered circuits
Mechanical configuration types D and W
Power supply and connections HF62
Supply voltage (VDD)
10…28VDC
V min = 10 V + (0.02 x Load*) *Load resistance in ohms.
Nominal current consumption
(low voltage models)
2 x 20 mA
Cable fittings Terminal block and M16 cable grip or ½” conduit adapter
Polarity protection
(low voltage models)
Protective diode on V+
Humidity measurement
HF62
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
HF62
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
HF62
Psychrometric calculations Dew or frost point (user configurable option)