19
Reference Manual
00809-0100-4803, Rev GA
Configuration
September 2017
Configuration
5. In the Available Components window, select the required components and move them into the
Selected Components window using the >> button. The << button moves the components back to the
Available Components window. The Clear button moves all components back to the Available
Components window.
6. After all required components are in the Selected Components window, begin assigning the percent
composition of each component in the Mole % column.
Note
These percent composition values should add to 100 percent. If they do not, select the Normalize
button. This will adjust the mole percentages proportionally to a total of 100 percent.
7. Enter the Nominal Operating Pressure, then the Nominal Operating Temperature as the entry blanks
become available. Engineering Assistant will automatically fill in suggested operating ranges. These
values may be edited by the user.
Note
In order to comply with the AGA requirements the calculation accuracy must be within ±50 ppm
(±0.005%). This is stated in AGA Report No. 3, Part 4, Section 4.3.1. The pressure and temperature
operating ranges will be autofilled to comply with the standard.
8. Select Next >. This will bring the user to the Fluid Properties tab.
9. Proceed with the steps in “Fluid properties” on page 13.
Natural gas AGA No. 8 gross characterization flow configuration
method 1, method 2, and natural gas ISO 12213, physical properties
(SGERG 88) flow configuration
1. Expand the Gas category.
2. Select AGA No. 8 Gross Characterization Method 1, AGA No. 8 Gross Characterization Method 2,
or ISO 12213, Physical Properties (SGERG 88).
3. Select Next to proceed to the Fluid Composition tab.
4. Enter the required data for the Natural Gas Characterization Method that was selected in Step 2.
Required data for each method is listed in Ta bl e 2 -3 .
Table 2-3. Required and Optional Data for Natural Gas Characterization Methods
Characterization method Required data Optional data
AGA Report No. 8 Gross
Characterization Method 1
Relative Density
(1)
Mole Percent CO
2
Volumetric Gross Heating Value
(2)
1. Reference conditions for the relative density are 60 °F (15.56 °C) and 14.73 psia (101.56 kPa).
2. Reference conditions for the molar gross heating value are 60 °F (15.56 °C) and 14.73 psia (101.56 kPa) and reference conditions for molar
density are 60 °F (15.56 °C) and 14.73 psia (101.56 kPa).
Mole Percent CO
Mole Percent Hydrogen
AGA Report No. 8 Gross
Characterization Method 2
Relative Density
(1)
Mole Percent CO
2
Mole Percent Nitrogen
Mole Percent CO
Mole Percent Hydrogen
ISO 12213,
Physical Properties (SGERG 88)
Relative Density
(1)
Mole Percent CO
2
Volumetric Gross Heating Value
(2)
Mole Percent CO
Mole Percent Hydrogen
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