GPSA / API 617
Understand flow measurement units, Z-factor corrections, and standard vs actual conditions
It converts between ACFM, SCFM, ICFM, MMSCFD, and mass flow using Z-factor and operating conditions.
The compressibility Z-factor corrects for non-ideal gas behavior, which is essential for accurate flow conversions between actual and standard conditions.
ACFM is actual cubic feet per minute at operating conditions, while SCFM is corrected to standard temperature and pressure conditions.