Sherwood GF55, Manual, Page: 62 / 159

OMNI-Test Laboratories, Inc.
V
m(std)
– Volume of Gas Sampled Corrected to Dry Standard Conditions, dscf
ASTM E2515 equation (6)
Where:
K
1
=
17.64
°
R/in. Hg
V
m
= Volume of gas sample measured at the dry gas meter, dcf
Y = Dry gas meter calibration factor, dimensionless
P
bar
= Barometric pressure at the testing site, in. Hg
∆
H
=
Average pressure differential across the orifice meter, in. H
2
O
T
m
=
Absolute average dry gas meter temperature, ° R
Sample Calculation:
Using equation for Train 1: 1.33
V
m(std)
=
17.64 x 59.517 x 0.981 x 13.6
( 81.9
+
460
)
V
m(std)
=
57.023
dscf
Using equation for Train 2: 1.12
V
m(std)
=
17.64 x 59.234 x 0.984 x
13.6
( 81.6
+
460
)
V
m(std)
=
56.925 dscf
Using equation for ambient train: 0.00
V
m(std)
=
17.64 x 0.00 x 0 x
13.6
( 70.9 + 460
)
V
m(std)
=
0.000 dscf
) +
29.9 + )
( 29.9
29.9 +
(
( )
m
bar
m std m
T
H
P
Y V K V





 
+
   =
6 . 13
1 ) (
Control No. P-SFDK-0002, Effective date: 5/06/2016 File - Run 1, Tab - Example Calculations
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