Loop-powered display unit
Wiring
19
Circuit diagram / Description
Multi-drop 2-wire sensors
with process display unit
and loop power supply
R
s
DC
1
2
3
Y
I
LED
-
+
Y
I
Y
I
A0019575
1
Sensors
2
Power supply
3
HART
®
resistance
Multi-drop 2-wire sensors
with process display unit
and loop power supply,
with backlighting
R
s
DC
1
2
3
I
Y
Y
I
Y
I
LED
-
+
A0019722
1
Sensors
2
Power supply
3
HART
®
resistance
Optional HART
®
communication resistance module
A HART
®
communication resistance module is available as an accessory, see section
Accessories in the relevant Operating Instructions.
Mounting of the HART
®
communication resistance module see section Installation
instructions (→ 12)
