Fsp gr, Figure 16 - conversion chart – Badger Meter Flow-Alert Reed Switch User Manual
Page 18
Page 18
Form #04-VAM-UM-00229 09/12
DETERMINE FLOW RATES USING DIFFERENT PRESSURES & TEMPERATURES
scfm actual
scfm indicated
f x f x f
(
)
(
)
=
1
3
2
Where f
1
= Conversion Factor for Inlet Pressure
f
2
= Conversion Factor for Inlet Pressure
f
3
= Conversion Factor for Inlet Pressure
Table 1 - Pressure Correction Factor (f
1
) Operating Pressure
psig
25
50
75
100
125
150
175
200
225
250
BAR
1.7
3.5
5.2
6.9
8.6
10.4
12.1
13.8
15.5
17.2
kPa
172
345
517
689
862
1034
1207
1379
1551
1724
f
1
1.700 1.331 1.131
1.00
.902
.835
.778
.731
.692
.658
f
kPa
1
790 857
101 357
=
+
.
.
f
BAR
1
7 914
1 014
=
+
.
.
f
psig
1
114 7
14 7
=
+
.
.
Table 2 - Temperature Correction Factor (f
2
)
ºF
+10
+30
+50
+70
+90
+110
+130
+150
+170
+190
°C
-12.2
-1.1
+9.9
+21.0 +32.1
+43
+54
+65
+76
+88
F
2
.942
.962
.981
1.00
1.018 1.037 1.055 1.072 1.090 1.107
f
F
2
460
530
=
+ °
f
C
2
273
293
=
+ °
Table 3 - Specific Gravity Correction Factor (f
3
)
f
Sp Gr
3
=
. .
FIGURE 16 - CoNVERSIoN CHARt