P+ID Symbol

A P+ID symbol is comprised of the graphic representation and a data mask with symbol text. This data mask may contain as many as 200 records(dialogues). In accordance with symbol creation specifications, this can be text that is manually entered or automatically generated by the program. You can also specify whether or not text should appear in a predetermined position on the symbol in the drawing.

Diverse dialogue types have been defined, whereby each type of dialogue is assigned an identification number. There are, e.g. plant code, plant unit, aggregate and comment dialogue types.

Terminology used for HiCAD P+ID drawings should not be confused with the terminology applied to symbols used in other HiCAD applications. The graphic of a P+ID symbol represents a HiCAD part, not a HiCAD symbol!

A general type refers to symbols that are not integral parts of a pipeline, i.e. vessels and pumps. As both gauge and drive symbols contain dialogue of the type Auxiliary ID in their data masks, they play a special role within this symbol category. An M should be entered for gauge symbols and A for drive symbols. Gauge and drive symbols can be assigned to other symbols, e.g. an engine symbol can be assigned to the housing. Under the dialogue type Device, superior, either the name or equipment designation is automatically inserted according to KKS in the superior symbol.

A pipeline symbol is only represented by the pipeline name and, if applicable, text from it’s associated data mask. Pipe-line symbols serve as the superior symbol of pipe part symbols representing the pipeline in a P+ID.

This type of symbol is not used to represent parts, but indicates the start or end point of pipe connections or connections of a different type. It can also indicate a pipe assembly that is interrupted on the current sheet and continued on another sheet belonging to the same project.
Example: HiCAD manages symbols for the start and end of a pipeline as discontinuation symbols.

Apart from symbols belonging to respective data masks, there are the so called 0-Symbols. This name is used because symbol names in the symbol library always start with 0. In the symbol library, these symbols have a single data mask which is lost when they are inserted in the P+ID.

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