Symbols are graphical elements that represent features, components, actions, or conditions on a mechanical drawing. They can be simple shapes, such as circles, squares, or triangles, or complex ...

While ISA-5.1 deals with instrumentation and control content on various engineering drawings, including PFDs and P&IDs, this new TR will provide guidance and examples specific to PFDs and P&IDs.

In addition, the group updated the document to add new symbols and recognize new automation technology, add new reference sections and add the loop instrument diagrams symbol table. “The ISA5 ...