Grounding The Transmitter Case - Emerson Rosemount 4600 Reference Manual

Reference Manual
00809-0100-4022, Rev GA
3.7

Grounding the transmitter case

Always ground the transmitter case in accordance with national and local electrical codes.
The most effective transmitter case grounding method is a direct connection to earth
ground with minimal impedance. Methods for grounding the transmitter case include:


Note
Grounding the transmitter case using the threaded electrical or process connections may
not provide a sufficient ground. The transient protection (Option Code T1) will not provide
transient protection unless the transmitter case is properly grounded. Use the above
guidelines to ground the transmitter case. Do not run transient protection ground wire with
signal wiring; the ground wire may carry excessive current if a lightning strike occurs.
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Internal Ground Connection: The green lead provides the internal ground
connection, and is standard on all Rosemount 4600 Transmitters.
External Ground Assembly: This assembly is included with the optional transient
protection (Option Code T1). The External Ground Assembly can also be ordered
with the transmitter (Option Code D4), or as a spare part (4600-0113-0001).
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