Emerson Rosemount 3095 - Page 71

Reference Manual
00809-0100-4716, Rev JA
May 2008
3-41
Rosemount 3095 MultiVariable
HART
Gross Characterization Method 1 (AGA) & Physical Property:
SGRG-88 (ISO)
Gross Method 1 uses the density of natural gas, its heating value, and the
quantity of non-hydrocarbon components to calculate the gas
compressibility factor per AGA8. SGRG-88 is the equivalent gas
compressibility factor for ISO applications.
1. Enter values for the following parameters:
• Real gas relative density (Specific gravity relative to air)
• Mole % of CO
2
• Volumetric gross heating value
• Mole % of H
2
(optional)
2. Click “Next”.
Figure 3-33. Gross Method I &
SGRG-88 Configuration
Gross Characterization Method 2 (AGA)
Gross Method 2 uses the density of natural gas and the quantity of
non-hydrocarbon components to calculate the gas compressibility factor
per AGA8.
1. Enter values for the following parameters:
• Real gas relative density (Specific gravity relative to air)
• Mole % of CO
2
• Mole % of N
2
• Mole % of H
2
(optional)
• Mole % of CO (optional)
2. Click “Next”.