Dräger Regard 3900 Instructions For Use Manual page 21

Two-wire 4–20 mA transmitters with safety barrier
5.7.2
● Refer also to the instructions for the safety barrier and transmitter for connections between transmitter and barrier, and for
the barrier earth connection.
Hazardous area
Transmitter
+24 V
Signal
Regard 3900 Series
Non-hazardous area
Safety barrier
0 V
+24 V
0 V
Signal
Installation and set up
Input module
RR
0 V RR 24 V 0 V SIG 24 V
Ch1
3819
21