Regarding instrument grounding
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I would like to ask everyone: is it more important to have a pure power supply for the instrument, or is it more important to ensure proper shielding and grounding of the instrument? ! !
I don’t understand what you mean by a pure power supply. Both the power supply for the instruments and the signal shielding grounding are very important. Sinopec has separate specifications for power supplies, as well as for grounding. What problem are you facing now?
Both are important; pure power supply is one aspect, while electromagnetic interference is another. A pure power supply ensures the stability of the instrument circuit itself, while grounding serves to, in conjunction with the shielding layer, prevent interference from other strong electrical sources or strong signal sources.
Both are important; one should be for internal use, and the other for external use.