414L-M-V3
4.4 COMPENSATION FOR PETROLEUM LIQUIDS
The petroleum correction program uses the American Petroleum
Institute equations described in API Standard 2540.
For US units,
the equations leading to Table 24A, 24B and 24D are used and, for
metric units, Table 54A, 54B and 54D equations are used.
These
Tables are entitled:
Table 24A
Correction of Volume for Generalized Crude Oils to 60°F
against Relative Density 60/60°F.
Table 24B
Correction of Volume for Generalized Products to 60°F
against Relative Density 60/60°F
Table 24D
Correction of Volume for Generalized Lubricating Oils to 60°F
against Relative Density 60/60°F.
Table 54A
Correction of Volume for Generalized Crude Oils to 15°C
against Density at 15°C.
Table 54B
Correction of Volume for Generalized Products to 15°C
against Density at 15°C.
Table 54D
Correction of Volume for Generalized Lubricating Oils to 15°C
against Density at 15°C.
Based on the programmed density and the measured temperature, the
software derives a volume correction factor (VCF). The gross
(uncompensated) rate is multiplied by the VCF to give the net
compensated total.
For US units, the density is programmed as the Relative Density (SG) and
the volume is referenced to 60°F. For Metric units, the density is
programmed as the Density in kg/m3 and the volume is referenced to 15°C.
38
Temperature Compensation