Spirit flow-x, Function Reference

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Flow-X─ Function Reference
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Flow-X General functions - fxAPI_Table6_1980
fxAPI_Table6_1980
°API (60°F, 0 psig) --> CTL
This function calculates the volume correction factor for temperature from the API gravity value at 60°F
and the observed temperature.
The temperature conversion is according to API-2540, Tables 6A (Generalized Crude Oils) and 6B
(Refined Oil Products) and API MPMS 11.1 Chapter XIII Table 6D: 1984 (Lubricating Oils).
Compliance

API MPMS 11.1 Volume X (API Standard 2540) - Table 6A - Generalized Crude Oils,
Correction of Volume to 60°F against API Gravity at 60°F - First Edition, August 1980

API MPMS 11.1 Volume X (API Standard 2540) - Table 6B - Generalized Products, Correction
of Volume to 60°F against API Gravity at 60°F - First Edition, August 1980

API MPMS 11.1 Volume XIII - Table 6D - Generalized Lubricating Oils, Correction of Volume
to 60°F Against API Gravity at 60°F - January 1982
Function inputs and outputs
Function inputs Remark EU SW tag Range Default
Name Optional tag name, tag
description and tag group
API at 60 °F API gravity at 60°F and the
equilibrium pressure °API -20..120 0
Observed
temperature °F -100..400 60
Product 1: A - Crude Oil
2: B - Auto select
Selection based on °API at 60 °F
3: B - Gasoline
4: B - Transition Area
5: B - Jet Fuels
6: B - Fuel Oil
7: D - Lubricating Oil PRDTYP - 1
API2540 rounding 0: Disabled
The calculations are
performed with full precision
and the final CTL value is
rounded as specified by
input 'CTL decimal places'
1: Enabled for computational
value
API-2540 rounding and
truncating rules are applied
and the computational value
for CTL as specified in the
standard is used, meaning
that the CTL value has:
4 decimal places if CTL >=1
5 decimal places if CTL < 1.
2: Enabled for table value
API-2540 rounding and
truncating rules are applied
and the table value for CTL
as specified in the standard
meaning that the CTL value
has 4 decimal places in all
APIROUN
D - 0