This calculation is used to determine the Temperature Correction Factor, given an appropriate Density Factor at Base Temperature and an Observed Temperature. The calculation also finds the appropriate Density Factor at Base Temperature given a relative density at an Observed Temperature.
Six tables are included in the calculation. Tables 23 and 24 are at 60°F base temperature, Tables 54 and 53 are at base temperature of 15°C and Tables 60 and 59 are at base temperature of 20°C.
API Manual of Petroleum Measurement Standards Chapter 11 – Physical Properties Data - Section 2 Part 4 – Temperature Correction for the Volume of NGL and LPG Tables 23E, 24E, 53E, 54E, 59E and 60E, First Edition 2007, Errata 2011
ASTM Technical Publication [Stock No. PETROLTBL-TP27]
GPA Technical Publication TP-27