
3-7
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. Depending upon the calculation type you have selected,
only the applicable constants shown in Table 3–2 will be visible.
Table 3–2 Gas Orifice Constants
Configurable
Parameter
Default Value
Units
AGA-3 1985
AGA-3 1992
Auxiliary Factor (Faux) 1.0
Yes
Yes
Barometric Pressure
PSIA
Yes
Yes
DP zero cutoff
0.0000
inches H2O
Yes
Yes
Meter Factor (Fb Basic Orifice Factor)
210.2300
Yes N/A
Orifice Coefficient of Expansion
9.2500
Inches per Deg. F
No Yes
Orifice diameter
1.0000
Yes Yes
Orifice Material
Stainless
Yes No
Pipe Coefficient of Expansion
6.2000
Inches per Deg. F
N/A Yes
Pipe diameter
2.0670
Yes Yes
Pressure Base (Contract)
14.7300
PSIA
Yes
Yes
Specific Heat Ratio
1.3000
Yes Yes
Tap Location
Upstream
No
No
Tap Type
Flange Taps
Yes
No
Temperature Base (Tb)
60.0000
Degrees F
Yes
Yes
Viscosity 0.0103
Centipoise
Yes
Yes
Z of air at base condition
0.9996
N/A Yes
Fixed Cd
.6
N/A Yes
Summary of Contents for uFLO
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Page 16: ...1 2 FLO 6213 Figure 1 1 µFLO 6213 Dimensions ...
Page 18: ...1 4 Figure 1 3 Bottom View µFLO 6213 9 367 9 992 8 647 Figure 1 4 Bottom View µFLO 6210 ...
Page 39: ...2 9 FLO 6213 Figure 2 7 µFLO 6213 Wall Mounted ...
Page 50: ...2 20 Figure 2 13 Mounting AC Charger ...
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Page 62: ...3 12 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
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Page 70: ...4 6 11 9 5 4 1 13 3 FLO 6210 12 8 7 10 2 Figure 4 2 µFLO 6210 Component Cable Locations ...
Page 71: ...4 7 1 6 FLO 6213 5 13 3 2 4 7 8 10 9 12 11 Figure 4 3 µFLO 6213 Component Cable Locations ...
Page 132: ...6 2 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...