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AGA 3: 1992
v1.1
Concentric, Square-Edged Orifice Meters
This standard calculates natural gas flow through a flange-tapped, concentric orifice meter.
Configuration
Option
Setting
Fluid Type
Gas
Liquid
Standard Volume Developed From
Density of Fluid
Real Gas Relative Density
Temperature Transmitter Location
Recovery Point
Downstream
Upstream
Temperature Correction Method
Isentropic Exponent
ISO TR 9464
Density Location
Recovery Point
Downstream
Upstream
Temperature Exponent Method
Calculated
User Entered
Energy Flowrate Calculated from
Std. Vol. Flowrate
Mass Flowrate
Inputs
Field
Units
Value
Differential Pressure
mbar
bar
Pa
Upstream Pressure (p1)
mbar
mbar g
bar
bar g
Pa
Pa g
kPa
kPa g
MPa
MPa g
GPa
GPa g
psi
psi g
inH2O @ 60°F
Recovery Point Temperature (t3)
°C
°F
K
°R
Pipe Diameter
mm
cm
m
km
in
ft
Pipe Coefficient of Expansion
mm/mm/°C
mm/mm/°F
mm/mm/K
mm/mm/°R
m/m/°C
m/m/°F
m/m/K
m/m/°R
Pipe Calibration Temperature
°C
°F
K
°R
Device Diameter
mm
cm
m
km
in
ft
Device Coefficient of Expansion
mm/mm/°C
mm/mm/°F
mm/mm/K
mm/mm/°R
m/m/°C
m/m/°F
m/m/K
m/m/°R
Device Calibration Temperature
°C
°F
K
°R
Isentropic Exponent
-
Fluid Viscosity
mPa.s
Pa.s
cP
P
pdl.s/ft²
rhe
Upstream Density
kg/m³
g/m³
mg/m³
lb/ft³
Standard Density
kg/Sm³
g/Sm³
mg/Sm³
lb/Sft³
Superior Real Volume Based CV
MJ/Sm³
Intermediates
Field Name
Value
A
0
B
0
C
0
M1
0
M2
0
L1
0
L2
0
Iterations
0
Results
Description
Units
Actual
Temperature Exponent
-
Temperature Corrected Pipe Diameter
mm
cm
m
km
in
ft
Temperature Corrected Device Diameter
mm
cm
m
km
in
ft
Beta Ratio
-
Expansion Factor
-
Velocity of Approach Factor
-
Reynolds Number
-
Discharge Coefficient
-
Flow Coefficient
-
Permanent Pressure Loss
mbar
bar
Pa
Downstream Pressure (p2)
mbar
mbar g
bar
bar g
Pa
Pa g
kPa
kPa g
MPa
MPa g
GPa
GPa g
psi
psi g
inH2O @ 60°F
Recovered Pressure (p3)
mbar
mbar g
bar
bar g
Pa
Pa g
kPa
kPa g
MPa
MPa g
GPa
GPa g
psi
psi g
inH2O @ 60°F
Upstream Temperature (t1)
°C
°F
K
°R
Downstream Temperature (t2)
°C
°F
K
°R
Mass Flowrate
kg/s
kg/h
kg/d
t/s
t/h
t/d
lb/h
lb/s
lb/d
long ton/s
long ton/h
long ton/d
short ton/s
short ton/h
short ton/d
Gross Volume Flowrate
m³/s
m³/h
m³/d
km³/s
km³/h
km³/d
bbl/s
bbl/h
bbl/d
bbl(UK)/s
bbl(UK)/h
bbl(UK)/d
bbl(US)/s
bbl(US)/h
bbl(US)/d
Standard Volume Flowrate
Sm³/s
Sm³/h
Sm³/d
kSm³/s
kSm³/h
kSm³/d
Sbbl/s
Sbbl/h
Sbbl/d
Sbbl(UK)/s
Sbbl(UK)/h
Sbbl(UK)/d
Sbbl(US)/s
Sbbl(US)/h
Sbbl(US)/d
scf/s
scf/h
scf/d
kscf/s
kscf/h
kscf/d
MMscf/s
MMscf/h
MMscf/d
Energy Flowrate
J/s
J/h
J/d
MJ/s
MJ/h
MJ/d
GJ/s
GJ/h
GJ/d
TJ/s
TJ/h
TJ/d
PROJECT CODE:
STREAM ID:
TEST NUMBER:
TEST CONDUCTED BY:
TEST WITNESSED BY:
ADDITIONAL WITNESS:
ADDITIONAL WITNESS:
ADDITIONAL WITNESS:
ADDITIONAL WITNESS:
COMMENTS:
TEST DATE:
03/03/2021 22:03:43