Instrument code issue

2018-01-26View Original

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I would like to ask the experts: what do ZOS, ZCS, ZOI, ZCI in the instrument mean, as well as what do G5 and G6 in the diagram represent?

Reply #22018-01-26

ZOS: Enable response; ZCS: Disable response; ZOI: Indicate to enable response in DCS; ZCI: Indicate to disable response in DCS. The triangle denotes the division of the interface, as well as who is responsible for its design or supply, etc. G5 and G6 were not found; G28 and G29 represent pipe numbers, which should be indicated in the legend. When you obtain a PID, you should first check the legend.

Reply #32018-01-26

Learn this standard: HG/T 20505-2014 – Functional indicators and graphic symbols for process measurement and control instruments

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Instrument code issue

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