Piping and Instrumentation Diagram'ın kısaltmasıdır.

The Piping and instrumentation diagram (P&ID) is defined by the Instrumentation and Control Institute as follows:

A diagram showing the interconnection of process equipment and the instrumentation used to control the process. In the process industry, a standard set of symbols is used to prepare process drawings.

What is important to remember is that P&ID is not to scale.

P&IDs are used to identify lines that require regular temperature monitoring ¹⁾

It enables the designer to understand flow paths.

Flow paths help to determine the circuit quantity, especially when using line sense control.

Taken from UCH Viki. https://wiki.ulascemh.com/doku.php?id=en:eng:doc:pandid