ROTRONIC HF4 - Manual (Page 17)

E-M-HF4-V1_22
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
HygroFlex HF4 Humidity Temperature
Transmitters: User Guide Instruction Manual
Document Type
Page 17 of 29
Document title
© 2009-2011; Rotronic AG E-M-HF4-V1_22
Terminal block diagram
Type D and W (horizontal mount)
Type D (vertical mount)
Note: Terminals K1-3 or K6-3 (protective or earth ground) are not tied with GND. If so desired, K1-3 or K6-3
can be tied with GND by closing a solder pad on the PCB
Terminals Description
K1-1: GND
Power supply (-) or neutral
(tied with other GND)
K1-2: V+
Power supply: 15…40 VDC (+)
or 12…28 VAC (Phase)
K1-3: - ► Protective ground (see note below)
K2-4: GND Ground (tied with other GND)
K2-3: GND Ground (tied with other GND)
K2-2: OUT2
Temperature output (+)
K2-1: OUT1 Relative humidity or dew point (+)
K6-1: GND
Power supply (-) or neutral
(tied with other GND)
K6-1: V+
Power supply: 15…40 VDC (+)
or 12…28 VAC (Phase)
K6-3: - ► Protective ground (see note below)