DCS screen design issues
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Can we ignore the trivialities? For example, if there is an AI table or PI table associated with the PID located behind the FV control valve, could it be moved in front of the control valve to keep the layout of the interface simpler and clearer?
I think it’s not appropriate to change the location if the display on your DCS is also supposed to reflect the contents of the PID intuitively
Of course not; a pressure gauge (PI) placed before and after a control valve are two completely different things. Because the control valve also has a pressure drop, the readings taken before and after it are different, and their meanings are also different. But the online analysis (AI) component should be fine. You’d better respect the engineer who came up with the PID; otherwise, it will cause a lot of trouble if problems arise in the future.
Better not; it affects the judgment of those who come after
No, the pressure after the control valve is different from the pressure before it. If it’s placed backwards, it’s hard to adjust
This is absolutely unacceptable; the DCS should match the actual conditions on site, otherwise it will lead to misunderstandings or incorrect operations.
For anyone, these diagrams are better the more accurate they are, rather than the more beautiful. It’s fine to strive for beauty on top of accuracy
Feedforward control and feedback control in DCS are two completely different concepts; their operation methods and principles are opposite to each other. One should not experiment with these casually – safety comes first
The position in the image cannot be changed, as this would make it less intuitive and harder to adjust
The PV, SV, and MV values of the PID can be grouped together; the PV and MV values are connected to the centralized display area for the PID on the screen using thin dashed lines from their respective positions. This ensures both an attractive appearance in the relevant dataset and meeting the requirements for accurate measurement points.
The position cannot be changed; the length and size of the pipes can be simulated, but their front-back position cannot be altered. Many people may use this position to verify the actual site conditions. Try to keep this in line with the actual site; the relative distances need not be accurate, but the positions must be correct