Compressed Air Best Practices, Mar. 2017, by Tim Dugan.
http://www.airbestpractices.com/system-assessments/compressor-controls/compressed-air-system-commissioning-part-2-measurement-and-da

"Facility managers, air compressor dealer personnel, auditors and utility DSM energy engineers: All three project stakeholders need to have one agreed-upon robust methodology for commissioning a system, and the teamwork to do it correctly the first time.  That is the intent of this series of articles."