Chapter 9 – Weights & Measures
Firmware Version 3/4.31.37
This table provides density at 20ï‚° C of light hydrocarbons at observed temperature and
density. Use this table if the following conditions exist.
ï‚· The liquid is a NGL or LPG (propane)
ï‚· Current Temperature and Density is available.
ï‚· Relative Density at 20ï‚° F is unknown
ï‚· Reference Temperature is 20ï‚° C
Test temperatures and densities can be entered on this screen that will calculate the
corrected density at the test temperature and density. The test temperature, density and
Calculated corrected density at 20ï‚° C are for informational purposes and will not be used in
calculations during operations.
The CTL value is calculated as CTL = Observed Density / Corrected Density at 20ï‚° C.
This table provides density at 20ï‚° C of light hydrocarbons at observed temperature and
density
This is the table-based volume-correction for Alcohols/Biofuels (Brazil) Reference
Standard:ABNT NBR 5992 for Ethanol (901A) It is passed the product api density20 at 60
degrees (api60) and the product temperature in degrees F
This table provides CTL factors for correcting volumes of ethanol at observed temperatures
to the volume at either 15ï‚° C or 60ï‚° F. Use this table if the following conditions exist:
ï‚· The liquid is ethanol
ï‚· Coefficient of expansion at 15ï‚° C or 60ï‚° F is known
ï‚· Reference Temperature is 15ï‚° C or 60ï‚° F
After selecting this table, enter the coefficient of expansion of the liquid at 15ï‚° C or 60ï‚° F.
Test temperatures can be entered on this screen that will calculate a CTL based on the test
temperature and coefficient of expansion. 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 ethanol at observed temperatures
to the volume at either 15ï‚° C or 60ï‚° F. Use this table if the following conditions exist:
ï‚· The liquid is ethanol
ï‚· Coefficient of expansion at 15ï‚° C or 60ï‚° F is not known
ï‚· Reference Temperature is 15ï‚° C or 60ï‚° F
Test temperatures can be entered on this screen that will calculate a CTL based on the test
temperature and coefficient of expansion. 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 ethanol at observed temperatures
to the volume at either 15ï‚° C or 60ï‚° F. Use this table if the following conditions exist:
ï‚· The liquid is ethanol
ï‚· Coefficient of expansion at 15ï‚° C or 60ï‚° F is not known
ï‚· Reference Temperature is 15ï‚° C or 60ï‚° F (needs to be maintained under component level!)
Coefficient of Density is fixed at 0.84*10E-3
Test temperatures can be entered on this screen that will calculate a CTL based on the test
temperature and coefficient of expansion. The test temperature and Calculated CTL are for
informational purposes and will not be used in calculations during operations.
Note: Blend range from B0 to B100