Piping and instrumentation diagrams are important documents in many engineering tasks. Is there a free or even open source program geared to this?
Where a proper P&ID software differs from a drawing tool like Visio or Diag is that the P&ID tool can output a parts list listing all components and connectors. Components and connecting lines can have additional specifications (like the power and type of a motor, or the size and material and pressure level of a pipe). This specifications can then be written to the material/component list.
If anyone has more working experience with P&ID software and thinks my specs are totally of the mark, please comment or edit accordingly.
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