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BS 1646-2:1983 Symbolic representation for process measurement control functions and instrumentation. Specification for additional basic requirements
standard by BSI Group, 11/30/1983
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Full Description
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.Cross References:
BS 1646:Part 1
BS 1646:Part 3
BS 3939
BS 3939:Section 21