Constants; Table 3-3 Gas Orifice Constants - ABB XSeries G4 6200 User Manual

Analysis Data
Helium
Hydrogen
iButane
iPentane
Methane
nButane
nDecane
nHeptane
nHexane
nitrogen N2
nNonane
nOctane
nPentane
Oxygen
Propane
Water H2O
Specific Gravity

3.6.6 Constants

On a single tube gas orifice meter, there are certain constants or parameters that
may need to be entered or changed from the default values. Table 3–3 displays
the list of these constants.
Parameters
Auxiliary Factor (Faux)
Barometric Pressure
DP Zero Cutoff
Meter Factor (Fb Basic Orifice
Factor)
Orifice Coefficient of Expansion
Orifice Diameter
Orifice Material
Pipe Coefficient of Expansion
Pipe Diameter
Pressure Base (Contract)
Specific Heat Ratio
Tap Location
2104349 rev. AD
Default
Units
Value
0.0000 mol %
0.0000 mol %
0.0000 mol %
0.0000 mol %
100.000 mol %
0.0000 mol %
0.0000 mol %
0.0000 mol %
0.0000 mol %
0.0000 mol %
0.0000 mol %
0.0000 mol %
0.0000 mol %
0.0000 mol %
0.0000 mol %
0.0000 mol %
0.6000
Table 3–3 Gas Orifice Constants
Default
Units
Value
1.0
PSIA
0.0000 In H2O
210.2300
In per Deg.
9.2500
F
1.0000
Stainless
Inches per
6.2000
Deg. F
2.0670
14.7300 PSIA
1.3000
Upstream
NX19 Fixed AGA-8 1992
Ft/Fp Detail
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
N/A Yes
AGA-3 AGA-3
1985 1992
Configurable
Yes Yes
Yes Yes
Yes Yes
Yes No
No Yes
Yes Yes
Yes No
No Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
All
7
Others
Yes No
Yes No
Yes No
Yes No
Yes Yes
Yes No
Yes No
Yes No
Yes No
Yes Yes
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes Yes
AGA-7 ISO-5167
Yes Yes
Yes Yes
No Yes
No No
No Yes
No Yes
No No
No Yes
No Yes
Yes Yes
No Yes
No Yes
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