Chapter 9 – Weights & Measures
Firmware Version 3/4.31.37
This table provides CTL factors for correcting volumes of lube oils at observed temperatures
to the volume at 15ï‚° C. Use this table if the following conditions exist.
ï‚· The liquid is a lube oil
ï‚· Density @ 15ï‚° C is known
ï‚· Reference Temperature is 15ï‚° C
After selecting this table, enter the Density of the liquid at 15ï‚° C. The valid range of Density
is from 800-1064 kg/m3. Test temperatures can be entered on this screen that will calculate
a CTL based on the test temperature and the Density. The test temperature and Calculated
CTL are for informational purposes and will not be used in calculations during operations.
This table provides CTL factors for correcting volumes of light hydrocarbons at observed
temperatures to the volume at 15ï‚° C. Use this table if the following conditions exist.
ï‚· The liquid is a NGL or LPG (propane)
ï‚· Density at 15ï‚° C is known
ï‚· Reference Temperature is 15ï‚° C
After selecting this table, enter the Density of the liquid at 15ï‚° C. The valid range of Density
is from 350-688. Test temperatures can be entered on this screen that will calculate a CTL
based on the test temperature and the Density. The test temperature and Calculated CTL
are for informational purposes and will not be used in calculations during operations.
This table provides CTL factors for correcting volumes of crude oil at observed
temperatures to the volume at 20ï‚° C. Use this table if the following conditions exist.
ï‚· The liquid is crude oil
ï‚· Density at 20ï‚° C is known
ï‚· Reference Temperature is 20ï‚° C
After selecting this table, enter the Density of the liquid at 20ï‚° C. The valid range of Density
is from 610-1075 kg/m3. Test temperatures can be entered on this screen that will calculate
a CTL based on the test temperature and the Density. The test temperature and Calculated
CTL are for informational purposes and will not be used in calculations during operations.
This table provides CTL factors for correcting volumes of gasolines at observed
temperatures to the volume at 20ï‚° C. Use this table if the following conditions exist.
ï‚· The liquid is a refined product
ï‚· Density at 20ï‚° C is known
ï‚· Reference Temperature is 20ï‚° C
After selecting this table, enter the Density of the liquid at 20ï‚° C. The valid range of Density
is from 653-1075 kg/m3. Test temperatures can be entered on this screen that will calculate
a CTL based on the test temperature and the Density. The test temperature and Calculated
CTL are for informational purposes and will not be used in calculations during operations.
This table provides CTL factors for correcting volumes of petroleum liquids at observed
temperatures to the volume at 20ï‚° C. Use this table if the following conditions exist.
ï‚· The liquid is a refined product or crude oil
ï‚· Coefficient of Expansion @ 20ï‚° C is known
ï‚· Reference Temperature is 20ï‚° C
After selecting this table, enter the Coefficient of Thermal Expansion (alpha) of the liquid at
20ï‚° C. The valid range of alpha is from 0.000486-0.001674. The alpha will be entered as
486-1674, however. Test temperatures can be entered on this screen that will calculate a
CTL based on the test temperature and the alpha. The test temperature and Calculated
CTL are for informational purposes and will not be used in calculations during operations.