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63
Reference Manual
00809-0100-4140, Rev AA
January 2017
4.5
Hazardous areas
When the level detector is installed in hazardous areas, local regulations and specifications
in applicable certificates must be observed.
4.6
Wiring diagram
Figure 4-2. 4-20 mA/HART
®
Communication
A. Field Communicator (IS approved for intrinsically safe installations)
B. Approved IS barrier (for intrinsically safe installations only)
C. HART modem
D. Load resistance (
250
)
E. Current meter
F. Power supply
4.7
Grounding
Always ground the housing in accordance with national and local electrical codes. Failure to
do so may impair the protection provided by the equipment.
Do not connect the power signal wiring to the test terminals.
Incorrect wiring can damage the test circuit.
-
+
-
+
Fn
1
2
3
4
5
6
7
8
9
0
-
.
A
B
D
E
F
C
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