C222 – API Calculation of Ctl (Product Groups)
Description
This calculates the correction factor to convert volumes between different temperature conditions.
References
Kelton calculation reference C222
This calculation is used by the following calculations:
F022/K209 – IP Paper 1 Density Referral
F023/K212 – API Density Referral
Manual of Petroleum Measurement Standards Chapter 11.1 – Volume correction factors Volume 10 – Background, Development and Program Documentation: API Standard 2540 First Edition (August 1980)
Options
Product Group
The constants to represent the properties of the various product groups are given in C022.
Precision
- Rounding Select this option to follow the procedure for rounding and truncating as stated in the standard
- Full Calculate using the full precision
Calculations
All calculations are performed in SI units unless otherwise stated
Ctlm
The temperature correction factor is calculated by
where:
ΔT = The difference between the temperature and the base temperature of 15 °C
and
where K0, K1 and K2 are taken from the product group constants