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Flow-X─ Function Reference
Flow-X General functions - fxASTM_D1555_Dens60F
fxASTM_D1555_Dens60F
Description
This function calculates the relative density at 60ᵒF and 0 psig according ASTM Designation 1555. The
ASTM-D1550 standard specifies equations for the calculation of Ctl, the liquid correction factor for
temperature, for several aromatic hydrocarbons and cyclohexane as a function of the observed
temperature. The compressibility factor is calculated in accordance with API MPMS 11.2.1:1984.
Compliance
ASTM Designation: D1555 -04, Standard Test Method for Calculation of Volume and Weight
of Industrial Aromatic Hydrocarbons and Cyclohexane
API MPMS 11.2.1 - Compressibility Factors for Hydrocarbons: 0 - 90°API Gravity Range - First
Edition, August 1984
Boundaries
The standard defines an upper limit for the temperature of 150°F for p-xylene and 140°F for all other
products.
API MPMS 11.2.1 defines the following limits on the input values:
0 to 90 °API
-20 to +200 °F
0 to 1500 psig.
Function inputs
Remark
EU
Range
Defaul
t
Name
Optional tag name, tag description and tag
group
Observed density
g/cc
0 .. 1.3
Observed
temperature
°F
-100..250
20
Observed pressure
psig
-10..2000
0
Product
1: Benzene
2: Cumene
3: Cyclohexane
4: Ethylbenzene
5: Styrene
6: Toluene
7: m-Xylene
8: o-Xylene
9: p-Xylene
10: 300-350°F Aromatic Hydrocarbons
11: 350-400°F Aromatic Hydrocarbons
1
ASTM D1555
rounding
0: Disabled
The calculations are performed with full
precision
1: Enabled
The input and output values are rounded
and truncated as defined in the standard
0
API 11.2.1 rounding
0: Disabled
The calculations are performed with full
precision
1: Enabled
The input and intermediate values are
rounded and truncated as defined in the
standard
0
Содержание flow-x
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