13
G
HYGRASGARD
®
RFF ⁄ RFTF
Rev. 2020 - V23
*
2-wire connection for devices with ⁄ without display (not illuminated)
3-wire connection for devices with illuminated display
**
3-wire connection for devices with ⁄ without display (not illuminated)
4-wire connection for devices with illuminated display
At the I variant the humidity path must necessarily be connected !
1
2
3
4
–UB-GND
Free
Output humidity in % r.H. 0-10V
+UB 24V AC/DC
1
2
3
4
5
6
Passive element
–UB-GND
Output temperature in °C 0-10V
Output humidity in % r.H. 0-10V
+UB 24V AC/DC
e.g. Pt1000, Ni1000,
LMZ235Z
1
2
3
4
5
6
Passive element
–UB-GND (optional for backlighting)
Output temperature in °C 4...20mA
Output humidity in % r.H. 4...20mA
+UB 24V DC
e.g. Pt1000, Ni1000,
LMZ235Z
1
2
3
4
–UB-GND
Output temperature in °C 0-10V
Output humidity in % r.H. 0-10V
+UB 24V AC/DC
1
2
3
4
–UB-GND (optional for backlighting)
Free
Output humidity in % r.H. 4...20mA
+UB 24V DC
1
2
3
4
Output temperature in °C 4...20mA
Output humidity in % r.H. 4...20mA
+UB 24V DC
–UB-GND (optional for backlighting)
5
6
1 2
3
4
°C
r.H.offset
+U
B 2
4V A
C/
DC
Ou
tp
ut h
um
id
ity
0-
10
V i
n % r
.H
.
–UB-GND
passive
sensor
Output temperature
0-10 V in °C
Plug for
display
5
6
1 2
3
4
°C
r.H.offset
+U
B 2
4V D
C
Ou
tp
ut h
um
id
ity
4.
..2
0m
A i
n % r
.H
.
–UB-GND
(optional for
LCD backlighting
passive
sensor
Output temperature
4...20mA in °C
Plug for
display
Schematic diagram
RFTF - U - x
(Baldur 1 )
RFTF - U - x with display
Schematic diagram
RFTF - I - x
(Baldur 1 )
RFTF - I - x with display
4- or 6-wire
RFTF - I
connection
(passive temperature
sensor)
4-wire
RFTF - U
connection
RFTF - U with display
3-wire
RFF - U
connection
4- or 6-wire
RFTF - U
connection
(passive temperature
sensor)
3- or 4-wire
RFTF - I
connection
**
(Transmitter)
2- or 3-wire
RFF - I
connection
*
(Transmitter)
