Flow-X─ Function Reference
4-159
Flow-X General functions - fxAPI_Table59_2004
fxAPI_Table59_2004
Description
Density (T, P) --> Density (20°C, 0 bar(g))
This function converts a density value at the observed temperature and pressure to the density value at
20°C and 0 bar(g).
The temperature and pressure correction is according to API MPMS 11.1:2004.
An iterative calculation needs to be applied to convert the observed density to the value at base
conditions.
Note: As opposed to API-2540, the 2004 standard does not include a correction for readings taken from
a hydrometer and assumes that the equilibrium pressure is below atmospheric pressure, so taking 0
psig as the base pressure.
Compliance
API MPMS 11.1 Temperature and Pressure Volume Correction Factors for Generalized Crude
Oils, Refined Products and Lubricating Oils, May 2004
Function inputs
Remark
EU
SW tag
Range
Default
Name
Optional tag name, tag
description and tag group
Observed density
Density at the observed
temperature and pressure
kg/m3
0..1300
0
Observed
temperature
Temperature at which the
density is observed
°C
-10..200
20
Observed
pressure
Pressure at which the density
is observed
bar(g)
-1..150
0
Product
1: A - Crude Oil
2: B - Auto select
Selection based on density at
20 °C
3: B - Gasoline
4: B - Transition Area
5: B - Jet Fuels
6: B - Fuel Oil
7: D - Lubricating Oil
PRDTYP
1
API rounding
0: Disabled
The calculations are
performed with full
precision and the final
CTL, CPL and CTPL values
are rounded as specified
by the inputs 'CTL / CPL/
CTPL decimal places'
1: Enabled
The input and output
values are rounded in
compliance with the
standard. The CTL, CPL
and CTPL value are
rounded to 5 decimal
places.
APIROUND
0
Содержание flow-x
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