Samson 3731-3 - Page 41

Note:
Communication errors may occur when the
process controller/control station output is
not HART-compatible.
For adaptation, the Z box (order no.
1170-2374) can be installed between out
-
put and communication interface.
At the Z box a voltage of 330 mV is re
-
leased (16.5
Ω
at 20 mA).
Alternatively, a 250-
Ω
resistor can be con
-
nected in series and a 22-
µ
F capacitor can
be connected in parallel to the analog out
-
put. Note that in this case, the controller out
-
put load will increase.
EB 8387-3 EN 41
Connections
22 µF
250 Ω
Fig. 14 · Adapting the output signal