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A Piping and Instrumentation Diagram (P&ID or PID) is a detailed diagram in the process industry which shows process equipment together with the instrumentation and control devices. It is also called as mechanical flow diagram (MFD).[1]
Superordinate to the P&ID is the process flow diagram (PFD) which indicates the more general flow of plant processes and the relationship between major equipment of a plant facility.
- ^ Turton, Richard; Bailie, Richard C.; Whiting, Wallace B.; Shaeiwitz, Joseph A.; Bhattacharyya, Debangsu (2012). Analysis, synthesis, and design of chemical processes. Prentice Hall international series in the physical and chemical engineering sciences (4th ed.). Upper Saddle River, N.J. Munich: Prentice Hall. ISBN 978-0-13-261812-0.