Extends the range of symbols contained in Part 1 and specifies symbolic representation intended for use by instrument specialists and other engineers involved with vessels, piping, layout design and operation. The symbols are used on piping and instrumentation diagrams and engineering line diagrams.
BS 1646-2:1983 history
0000 BS 1646-2:1983(2011)
1983BS 1646-2:1983 Symbolic representation for process measurement control functions and instrumentation - Specification for additional basic requirements