Propagation Table

This page shows the propagation table to that is used for the automated diagnostic analysis. The propagation table is automatically generated and is derived directly from the system model. It is one of two sets of data interrogated for sensor set analysis, the other being the observed failure responses that each sensor in the set may detect.

1. Select "Diagnostics Analyses" under "Analyses" in the Main Menu.
2. Create a new or open an existing Diagnostics Analysis.
3. Select "Diagnostic Sets" in the options on the left.

[Image: PropagationTable.png]

The table consists of:

• Initiating causes of failures listed in the left-most columns (Item, Flow Property, Failure).
• Item Responses for remaining columns across the table.
• The healthy system state (first row) which represents the system at a nominal state is included in the propagation table to ensure a sensor set can observe a failure occurrence.

Each cell contains one of three failure responses (terminology may vary depending on flow property selected):

• Nominal [Image: NominalIcon.png]
• Low (Alternative response terminology: Misaligned - / Misdirected - / Displaced + / Misshapen + / Advanced +) [Image: LowIcon.png]
• High (Alternative response terminology: Misaligned + / Misdirected + / Displaced - / Misshapen - / Advanced -) [Image: HighIcon.png]

The propagation considers all exclusions in the diagnostic analysis by displaying a blue highlight over rows (causes of failures) or columns (it responses). A refresh icon is located above the table to update the Propagation table when changes are made to the model.