Use this command to specify the Flowsheet and Recycle Data Tolerances for all future simulation problems. You can override these options for an individual problem through Flowsheet Tolerances and Recycle Data that can be accessed through the Flowsheet Tolerances and Recycle Data main window.
Usage
Two sets of tolerances are provided here, one matching with current default tolerances and other with PRO/II v9.3 and before. If the user selects any of the entries and overwrites the default tolerances data, this data is used for all future simulation problems.
The tolerance default changes between PRO/II v9.4 and PRO/II v9.3 are summarized as below.
Flowsheet Tolerances |
PRO/II v9.4 |
PRO/II v9.3 |
| Temperature (Absolute, ⁰F) | 0.001 | 0.1 |
| Pressure (Relative) | 0.001 | 0.005 |
| Duty (Relative) | 0.0001 | 0.001 |
| Flash | 3.00e-006 | 3.00e-006 |
| Miscellaneous (Relative) | 0.001 | 0.003 |
Recycle Tolerances |
PRO/II v9.4 |
PRO/II v9.3 |
| Component (Relative) | 0.001 | 0.01 |
| Temperature (Absolute, ⁰F) | 0.01 | 1 |
| Pressure (Relative) | 0.01 | 0.01 |
| Exclude Components with mole fraction | 0.001 | 0.01 |
| Number of Trials for each Recycle Loop | 50 | 20 |