Emerson 3051S Dokumentacja Strona 53

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27
Reference Manual
00809-0100-4803, Rev DA
Section 3: Configuration
April 2013
Configuration
Note
These percent composition values should add to 100%. If they do not, click the Normalize
button. This will adjust the mole percentages proportionally to a total of 100%.
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. Click Next >. This will bring the user to the Fluid Properties tab.
9. Proceed with the steps in “Fluid properties” on page 20.
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. Click 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 Tabl e 3 -3 .
Table 3-3. 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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