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NA 044

DIN Standards Committee Refrigeration Technology

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DIN EN 1861 [CURRENT] references following documents:

Document number Edition Title
ISO 3511-1 1977-07 Process measurement control functions and instrumentation; Symbolic representation; Part I : Basic requirements More 
ISO 3511-2 1984-07 Process measurement control functions and instrumentation; Symbolic representation; Part 2 : Extension of basic requirements More 
ISO 3511-3 1984-07 Process measurement control functions and instrumentation; Symbolic representation; Part 3 : Detailed symbols for instrument interconnection diagrams More 
ISO 3511-4 1985-08 Industrial process measurement control functions and instrumentation; Symbolic representation; Part 4 : Basic symbols for process computer, interface, and shared display/control functions More