Emerson Process Management ControlWave XFC - Manual (Page 132)

F-30 / Appendix F CI-ControlWave XFC
Static Pressure - Actual values in use for the calculation
Temperature - Actual values in use for the calculation
Pressure Adjustment - Average Barometric Pressure (psia)
Base Pressure - Required or Contract base pressure (psia)
Base Temperature - Required or Contract base temperature (Deg. F)
Calibration Factor - Sometimes referred to as Meter Factor, this is an adjustment factor
issued by the meter manufacturer to account for known meter adjustments. The default 1,
i.e., no adjustments required.
MSCF/H - Flow rate in thousands of standard cubic feet per hour.
MSCF/H (Max) - The maximum flow value allowed through the meter at the maximum
frequency input.
F.6.4 Supercompressibility Setup
When the 1985 AGA3 calculation is selected, the Supercompressibility (Fpv) value is
calculated using the NX-19 equations. When the 1992 AGA3 calculation is used the Flowing
(Zf) and Base (Zb) compressibility factors are calculated using either the AGA8 Detail or
AGA8 Gross module. The AGA8 Gross module provides either (G, C, N) or (HV, G, C)
modes.
Figure F-20 - Supercompressibility Configuration Web Page
If the Base Pressure or Base Temperature differ from Standard conditions (14.73 psia @ 60
ºF) and the 1992 AGA3 calculation is in use, an AGA8 Detail or AGA8 Gross module will be