Samson TROVIS SAFE 3731-3 Mounting And Operating Instructions page 42

Connections
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-µF capacitor can
be connected in parallel to the analog out-
put. Note that in this case, the controller out-
put load will increase.
Fig. 14 · Adapting the output signal
42
EB 8387-3S EN
250 Ω
22 µF