User Manual
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
4 of 34
© 2008; Rotronic AG E-M-HF63_65-V1_11
2 Models
2.1 Ordering codes
Transmitters with analog output signals: HF63 (3-wire)
1 2 3 4 5 6 7 8 Circuit type, supply voltage and output signal type
HF631- 3-wire, 15 to 40 VDC or 12 to 28 VAC, 0…20 mA
HF632- 3-wire, 15 to 40 VDC or 12 to 28 VAC, 4…20 mA
HF633- 3-wire, 5 to 40 VDC or 5 to 28 VAC, 0…1 V
HF634- 3-wire, 10 to 40 VDC or 8 to 28 VAC, 0…5 V
HF635- 3-wire, 15 to 40 VDC or 12 to 28 VAC, 0…10 V
HF636- 3-wire, 85 to 265 VAC, 0…20 mA
HF637- 3-wire, 85 to 265 VAC, 4…20 mA
HF638- 3-wire, 85 to 265 VAC, 0…1 V
HF639- 3-wire, 85 to 265 VAC, 0…5 V
HF63A- 3-wire, 85 to 265 VAC, 0…10 V
Installation type / Mechanical configuration
2 Probe separated by 2 m cable, 15 x 100 mm
D Duct mount (through wall), probe 15 x 208 mm
W Wall mount, probe 15 x 85 mm
Parameters (analog outputs)
P X X Humidity (0...100 %RH) + direct 4-wire Pt100 RTD
B Humidity (0...100 %RH) and Temperature (see range below)
H X X Humidity only (0...100 %RH)
T Temperature only (see range below)
1 X X Humidity & Dew / Frost point (see range below)
A Dew / Frost point and Temperature (see range below)
Standard temperature output ranges
1 X 0…50 °C
2 X 10…40 °C
3 X -40…60 °C
4 X -30…70 °C
5 X -40…85 °C
6 X 0…100 °F
7 X 0…200 °F
8 X 0…300 °F