Symbolic representation for process measurement control functions and instrumentation - Specification for detailed symbols for instrument interconnection diagrams Ingestion-build-266356 5 Tolerances

5 Tolerances

7 The basic principles

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servicing and repair done in accordance with the manufacturer’s instructions maintain the conformity to the standard used for the design of the equipment

Symbolic representation for process measurement control functions and instrumentation - Specification for detailed symbols for instrument interconnection diagrams Ingestion-build-266356 5 Tolerances1 Scope and field of application This part of BS 1646 specifies instrument symbols for use on interconnection diagrams used for the design, installation, and maintenance of process measurement and control systems. These detailed symbols are not normally intended for drawings that use the functional symbols given in BS 16461 and BS 16462. However, the symbols specified in this part of BS 1646 show, by detailing the components, the external connections