See the below Application Note (unreleased) to use Excel to perform calculations used by COMPASS in a relationship macro. An understanding of the relationship between Raw Outputs and Final Outputs is required, as well as a knowledge of Relationship Macros. The online COMPASS Help File accessed by the Help menu in the COMPASS software describes these.
If you have questions contact Pressure Calibration or Flow Calibration Technical Support at the below link or by calling +1-877-355-3225.