Electrical and Control Systems

Mastering Electrical, Process Measurement & Control Systems

Home » Process and Instrument Diagrams

Tag: Process and Instrument Diagrams

  • PFDs vs. P&IDs

    —

    by

    John Mulindi
    in

    Process Flow Diagrams (PFDs) defines the major elements of the process schematically i.e. the interconnections of process vessels, pipes and flow paths of process fluids. On the other hand, Piping and Instrument Diagrams (P&IDs) shows the layout of all relevant process vessels, pipes and machinery but with instruments superimposed on the diagram showing what gets…

  • P&IDs and Loop Diagrams

    —

    by

    John Mulindi
    in

    Process and Instrument Diagrams (P&IDs), also called Piping and Instrumentation Diagrams and Loop diagrams are construction and documentation drawings that show the flow of the process and illustrate the instrumentation control and measurement instructions, wiring and connections to the process. The sections or subsystems of the process that are usually shown are called loops. A…