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  • BSI
    BS 1646-3:1984 Symbolic representation for process measurement control functions and instrumentation - Specification for detailed symbols for instrument interconnection diagrams
    Edition: 1984
    $435.35
    / user per year

Description of BS 1646-3:1984 1984

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 1646-1 and BS 1646-2. However, the symbols specified in this part of BS 1646 show, by detailing the components, the external connections between units of equipment.

Information on the internal connections in units is not normally included, but references to the appropriate circuit or wiring diagrams may be provided.

When an instrument is composed of more than one functional part, the different symbols may be combined, for example, recorder controller.

The dimensions of the symbols are unspecified, provided the ratio of the side lengths is maintained according to this part of BS 16461).

If not otherwise stated, contact symbols should be shown open.

The diagrams may employ single line or multi-line representation and may be combined with, or replaced by tables, providing clarity is maintained.

For further assistance see IEC 113-5, Preparation of interconnection diagrams and tables.



Depicts, by detailing the components, the external connections between units of equipment. These symbols are intended for use at all stages of design, manufacture, installation and operation but are not intended to replace graphic symbols for electrical equipment.

Standard NumberBS 1646-3:1984
TitleSymbolic representation for process measurement control functions and instrumentation - Specification for detailed symbols for instrument interconnection diagrams
StatusConfirmed
Publication Date1984-01-31
Technically Equivalent National Standard OfISO/DIS 3511-3
DescriptorsGraphic symbols, Layout, Hydraulic control systems, Process control, Drawings, Production equipment, Graphic representation, Process charts, Technical drawing, Diagrams, Pneumatic control systems, Mechanical control systems, Control systems, Control devices, Instruments, Control equipment, Engineering drawings, Symbols
ICS25.040.40 Industrial process measurement and control, 01.080.40 Graphical symbols for use on electrical and electronics engineering drawings, diagrams, charts and in relevant technical product documentation
CommitteeTPR/1
ISBN0 580 13598 5
PublisherBSI
Pages26

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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