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BS 1646-1:1979 Symbolic representation for process measurement control functions and instrumentation. Basic requirements
standard by BSI Group, 11/30/1979
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Full Description
Intended for use at all stages of design, manufacture, installation and operation. Depicts measurement techniques embodied in a particular instrument or means of activation. Not intended to replace graphic symbols for electrical equipment.Cross References:
BS 308:Part 1
BS 3939
Replaces BS 1646:1964.