ROTRONIC HF3 - Manual (Page 14)

E-M-HF3-V1_22
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
HygroFlex HF3 Transmitters and Thermo-
hygrostats: User Guide Instruction Manual
Document Type
Page 14 of 27
Document title
© 2009-2011; Rotronic AG E-M-HF3-V1_22
Terminal block diagram for type D and W
Note: connect the + of the power supply to only one of
the V+ terminals. The two terminals marked V+ are
internally connected.
Terminal block diagram for type R and S
Note: connect the + of the power supply to only one of
the terminals 1 or 3. Terminals 1 and 3 are internally
connected.
Measuring humidity or temperature only
Unless configured to measure either humidity only or temperature only, proper operation of the HF32 requires
both current loops to be closed. The HF32 can be directly ordered from the factory to measure either humidity
or temperature only. When necessary, any unused output of the HF32 can be disabled with the ROTRONIC
HW4 software. When the HF32 is configured with one of the two outputs disabled, close only the loop that is
being used.
Terminals Description
T-OUT
Temperature output (+)
OUT-2
V+ Power supply: 10…28 VDC (+)
H-OUT
Relative humidity or dew point (+)
OUT-1
V+ Power supply: 10…28 VDC (+)
Terminals Description
1 Power supply: 10…28 VDC (+)
2
Temperature output (+)
OUT-2
3 Power supply: 10…28 VDC (+)
4
Relative humidity or dew point (+)
OUT-1
5 Not used
6 Not used