Instrument grounding issue

2016-07-12View Original

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Grounding at the instrument site and DCS grounding – what are the effects of doing this on both sides?

Reply #22016-07-12

A related standard is SH/T 3018-2003, Design Code for Safety Instrumented Systems in Petrochemical Industries

Reply #32016-07-12

If all of these are done, it’s as if there is no grounding; generally, in DCS systems, there is grounding

Reply #42016-07-13

Take a look at HG/T 20513-2014 \"Code for Grounding Design of Instrumentation Systems\"

Reply #52016-07-13

High-voltage grounding is two-terminal grounding, while signal grounding is single-terminal grounding. If the signal is grounded at both ends, it may form a loop and cause interference.

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Instrument grounding issue

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