Spirit flow-x, Справочник по функциям

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Flow-X─ Function Reference
Flow-X General functions - fxAPI_SG60F_1952
Conversion
method 1: From observed to standard
conditions
2: From standard to observed
conditions CONVERSIO
N 1
Function outputs Remark EU SW tag Alarm Fallback
Status 0: Normal
1: Input argument out of range
2: Calculation error
3: No convergence - STS
FIOOR
CALCERR
NOCONV
1
Output Specific
Gravity Depending on the conversion
method this is the Specific Gravity
either at 60
°
F and the equilibrium
pressure or at the observed
temperature and observed
pressure
- RD 0
CTL Volume correction factor for
temperature. - CTL 1
CPL Volume correction factor for
pressure
Value will be rounded according to
input 'API 11.2.1 rounding' - CPL 1
CTPL Combined volume correction
factor
CTPL = CTL * CPL - CTPL 1
F Compressibility factor - F 0
CTL calc out of
range With respect to the standard used
for the calculation of CTL the
combination of input values is:
0: In Range
1: Out of Range
CTLOOR 0
CPL calc out of
range With respect to the standard used
for the calculation of CPL the
combination of input values is:
0: In Range
1: Out of Range
CPLOOR 0
Calculations
The calculations depend on the conversion method.
Conversion method 1: from observed to standard conditions.
The function performs the following iterative algorithm to calculate the Specific Gravity at standard
conditions:
1. At the start of the iteration the initial value for Specific Gravity at [60

F,
equilibrium pressure] is set to the Observed Specific Gravity. The initial CPL value
is set to 1.
2. The CTL value is determined from the Specific Gravity at [60

F, equilibrium
pressure] according to API 1952 Table 24.
3. The Specific Gravity at [60

F, equilibrium pressure] is calculated from the
Observed specific gravity, the new CTL value and the CPL value from the previous
iteration.
4. Because API 11.2.1 requires the API gravity value at 60

F, the API gravity at [60

F, equilibrium pressure] is calculated from the Specific gravity at [60

F,
equilibrium pressure].
5. The compressibility factor is calculated according to API MPMS 11.2.1 from the
API gravity at [60

F, equilibrium pressure] and the 'Observed temperature'. If API