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There is a process-related issue that needs to be checked by the experts

2021-03-29View Original

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What do R, S, and T represent in this legend? Normal closed, normal open? What about the one that’s left? How does it correspond?
Reply #22021-03-30
What is this process? I don’t understand it. Doesn’t every design firm have design specifications?
Reply #32021-03-30
It’s just that no specific explanation is given, so it’s impossible to understand the author’s intention
Reply #42021-07-27
I’ve never seen it; could some expert explain it?
Reply #52021-07-29
It seems to be the DCS interlock of the instruments; we have it set up this way: RUN, START, STOP

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