The development of pneumatic systems is assisted by a uniform approach to the representation of the elements and the circuits. The symbols used for the individual elements must display the following characteristics:
- Actuation and return actuation methods
- Number of connections (all labelled for identification)
- Number of switching positions
- General operating principle
- Simplified representation of the flow path
The technical construction of the component is not taken into account in the abstract symbol form.
The symbols used in pneumatics are detailed in the standard DIN ISO 1219, "Circuit symbols for fluidic equipment and systems".
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