The following PlantServices.com articles discuss compressed air audits:
Smooth it out
Use flatline compressed air header pressure to stabilize performance of pneumatic equipment.
Not for knuckleheads
Geat a competent, unbiased compressed air system audit.
Baselining a compressed air system
Save thousands with simple measurements, a pencil and paper, a calculator and a telephone.
Energy conservation effort saves Conbraco $860,000
Keys were correcting compressed air leaks, power factor and billing errors.