Chapter 9 – Weights & Measures
Firmware Version 3/4.31.37
This table is used to correct observed density at the observed temperature to a density at
20ï‚° C. When this table is activated, the corrected density is then automatically used in Table
54B, which 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 lube oil
ï‚· Observed Density is to be corrected to 20ï‚° C and used in Table 54B
ï‚· Reference Temperature is 20ï‚° C
After selecting this table, enter the Density of the liquid at the observed temperature. 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 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‚· Density at 20ï‚° C 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.
Note: This table will not produce a CTL value, but this table may be used by other tables
This table provides the base density of a petroleum product at observed temperatures and
Density. This table allows specifying the commodity being measured, the reference
temperature, and units of measure for density, pressure, and temperature
This table is used to calculate the mass alcohol percentage at an observed temperature and
a observed density. When this table is activated, the CTL factor will contain the amount of
alcohol.So the net volume which is shown on each screen is the alcohol volume in the
product.
ï‚· The liquid is a refined product
ï‚· Observed Density is used in Table OIML6
ï‚· Observed Temperature is used
After selecting this table, the density has no range checking only the temperature is allowed
between -20 and + 40 degrees. 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 is used to calculate the volume alcohol percentage at an observed temperature
and a observed density. When this table is activated, the CTL factor will contain the amount
of alcohol.So the net volume which is shown on each screen is the alcohol volume in the
product.
ï‚· The liquid is a refined product
ï‚· Observed Density is used in Table OIML7
ï‚· Observed Temperature is used
After selecting this table, the density has no range checking only the temperature is allowed
between -20 and + 40 degrees. 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.