Flow-X─ Function Reference
3-41
Flow-X General functions - fxAPI_Dens15C_1952
compliance with API MPMS
12.2 par. 12.2.5.4).
Conversion
method
1: From observed to standard
conditions
2: From standard to observed
conditions
CONVERS
ION
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 Density
Depending on the conversion
method this is the Density either
at 15
°
C and the equilibrium
pressure or at the observed
temperature and observed
pressure
kg/m3
DENS
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 Density at standard conditions:
1.
At the start of the iteration the initial value for Density at [15
C, equilibrium
pressure] is set to the Observed Density. The initial CPL value is set to 1.
2.
The CTL value is determined from the Density at [15
C, equilibrium pressure]
according to API 1952 Table 54.
3.
The Density at [15
C, equilibrium pressure] is calculated from the Observed
Density, the new CTL value and the CPL value from the previous iteration.
4.
The compressibility factor is calculated according to API MPMS 11.2.1M from the
density at [15
C, equilibrium pressure] and the 'Observed temperature'. If API
11.2.1M rounding is enabled then the density and temperature are rounded and
Summary of Contents for flow-x
Page 1: ...Function Reference Certified flow calculations Flow and batch calculations Worksheet functions...
Page 331: ...Flow X Function Reference 5 331 Flow X IO Functions fxPT100Table...
Page 349: ...Flow X Function Reference 6 349 This page is intentionally left blank for user notes...
Page 350: ...6 350 Flow X Function Reference This page is intentionally left blank for user notes...
