13
Load resistance diagram
RPFTF ⁄ RPFTF
4...20 mA
RPFTF - 25 ⁄ RPFTF -25
NOTE
For 4...20 mA devices, DC voltage must be used
(without residual ripple, see permissible range of load
resistance diagram). Do not use pulsating DC voltage.
Connecting diagram
RPFTF - xx - U
Output:
with ⁄ without
0 -10 V
display
Connecting diagram
RPFTF - xx - I
Output:
with ⁄ without
4...20 mA
display
NOTE
At transmitters with current output the humidity output (Pin 2)
must categorically be connected !
800
700
600
500
400
300
250
50
200
10
15
20
25
30 35 36 40
Load resistance diagram
W
orking r
esis
tanc
e (Ohm)
Operating voltage (V DC)
Admissible
range
800
700
600
500
400
300
250
50
200
10
15
20
25
30 35 36 40
Load resistance diagram
W
orking r
esis
tanc
e (Ohm)
Operating voltage (V DC)
Admissible
range
1 2 3 4
230V AC
24V AC/DC
PLC
PC
+U
B
24
V
AC
/D
C
O
ut
pu
t h
um
id
ity
in
%
r.H
. 0
-1
0V
O
ut
pu
t t
em
pe
ra
tu
re
in
°C
0-
10
V
–UB
-GN
D
1 2 3 4
230V AC
24V DC
+U
B
24
V
D
C
O
ut
pu
t h
um
id
ity
in
%
r.H
. 4
...
20m
A
O
utp
ut
tem
per
at
ur
e
in
°
C
4
...
20m
A
PLC
Working
resistance
–UB GND (optional f
or
LCD back
gr
ound lightling)
1
2
3
4
–UB-GND
Free
Output humidity in % r.H. 0-10V
+UB 24V AC/DC
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
Output temperature in °C 4-20mA
Output humidity in % r.H. 4-20mA
+UB 24V DC
–UB-GND (optional for backlighting)
1
2
3
4
–UB-GND (optional for backlighting)
Free
Output humidity in % r.H. 4-20mA
+UB 24V DC
G
HYGRASGARD
®
RPFF ⁄ RPFTF (± 2,0 %), RPFF - 25 ⁄ RPFTF -25 (± 1,8 %)
4-wire
RPFTF - U
connection
RPFTF - 25 - U
3- or 4-wire
RPFTF - I
connection**
RPFTF - 25 - I
(Transmitter)
3-wire
RPFF - U
connection
RPFF - 25 - U
2- or 3-wire
RPFF - I
connection*
RPFF - 25 - I
(Transmitter
