7.5 Instrument and process equipment symbols

Advertisement

This section shows some of the many instrument symbols found in different types of technical diagrams used to document instrument systems.

7.5.1 Line types

Note: the single backslash signifying a “discrete” or “binary” signal type has been removed from the ISA standard as of the 2009 ANSI publication. Regular pneumatic and electrical line symbols may represent either continuous or discrete states. The “triple-slash” alternative linetype for electrical symbols is also absent from the 2009 ANSI/ISA standard.

7.5.2 Process/Instrument line connections

7.5.3 Instrument bubbles

7.5.4 Process valve types

7.5.5 Valve actuator types

7.5.6 Valve failure mode

7.5.7 Liquid level measurement devices

7.5.8 Flow measurement devices (flowing left-to-right)

7.5.9 Process equipment

7.5.10 Functional diagram symbols

7.5.11 Single-line electrical diagram symbols

7.5.12 Fluid power diagram symbols

Back to Main Index of Book

Advertisement

Leave a Reply

Your email address will not be published. Required fields are marked *