Chapter 9 – Weights & Measures
Firmware Version 3/4.31.37
This table provides CTL factors for correcting volumes of hydrocarbons at observed
temperatures to the volume at 20 C . Use this table if the following conditions exist:
The liquid is alcohol
Current Temperature and Density at 20 C is available.
Test temperatures can be entered on this screen that will calculate a CTL based on the test
temperature and density. The test temperature and Calculated CTL are for informational
purposes and will not be used in calculations during operations.
Corrected density at observed degree will be calculated and stored.
This table provides the API gravity at 60 F of crude oil at observed temperature and API
gravity. Use this tables if the following conditions exist:
The liquid is crude oil
Current temperature and API gravity is known
API gravity at 60 F is unknown
This table provides the API gravity at 60 F of refined products at observed temperature and
API gravity. Use this table if the following conditions exist:
The liquid is a refined product
Current temperature and API gravity is known
API gravity at 60 F is unknown
This table provides the API gravity at 60 F of lubrication oil at observed temperature and
API gravity. Use this table if the following conditions exist:
The liquid is lubrication oil
Current temperature and API gravity is known
API gravity at 60 F is unknown
This table provides the API gravity of a petroleum product at observed temperatures and
API gravity. This table allows specifying the commodity being measured, the reference
temperature, and units of measure for density, pressure, and temperature.
This table provides CTL factors for correcting volumes of crude oil at observed
temperatures to the volume at 60 F, using the method outlined in Chapter 11.1.6.1 of the
2004 standard. Use this table if the following conditions exist:
The liquid is crude oil
API Gravity @ 60 F is known
Reference Temperature is 60 F
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