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Flow-X─ Function Reference
Flow-X General functions - fxAPI_RD60F_NGL_LPG
Conversion method 2: from standard to observed conditions.
The function performs straightforward calculations to determine the density at observed conditions:
1.
When API 11.2.4 rounding is enabled, the input relative density and temperature
values are rounded in accordance with the standard
2.
The CTL value is calculated according to API MPMS 11.2.4 (GPA TP-27) Table 24E
from the density at [15
C, equilibrium pressure] and the 'Observed
temperature'.
3.
Depending on the value of input 'Equilibrium pressure mode', either value of
input 'Equilibrium pressure value' is used or the equilibrium pressure (vapor
pressure) is calculated according to GPA TP-15.
4.
The compressibility factor is calculated according to API MPMS 11.2.2 from the
input relative density and the 'Observed temperature'.
5.
The CPL value is calculated from the compressibility factor, the equilibrium
pressure and the 'Observed pressure' input value.
6.
If API 11.2.4 rounding is enabled, then the CTL value is rounded at [60
F,
equilibrium pressure] is rounded to 0.00001
7.
The relative density at the observed conditions is calculated by multiplying the
input relative density by the CTL value and the CPL value.
Summary of Contents for flow-x
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