Meriam Laminar Flow Elements - Manual (Page 12)

12
Table A-31031
Meriam Laminar Flow Element Pressure Correction Factor (any Gas) Base Pressure (Assigned
Standard) 29.92 Inches Mercury Absolute
LAMINAR INLET
PRESSURE INCH
HG. ABS
Pcf.
LAMINAR INLET
PRESSURE INCH
HG. ABS. Pcf.
LAMINAR INLET
PRESSURE INCH
HG. ABS.
Pcf.
LAMINAR INLET
PRESSURE INCH
HG. ABS.
Pcf.
LAMINAR INLET
PRESSURE INCH
HG. ABS.
Pcf.
26.00 .8689
26.05 .8706
26.10 .8723
26.15 .8739
26.20 .8756
26.25 .8773
26.30 .8790
26.35 .8806
26.40 .8823
26.45 8840
26.50 .8856
26.55 .8873
26.60 .8890
26.65 .8907
26.70 8923
26.75 .8940
26.80 .8957
26.85 .8973
26.90 .8990
26.95 .9007
2700 .9024
27.05 .9040
27.10 .9057
2715
.9074
27.20 .9090
27.25 .9107
27.30 .9124
27.35 .9141
27.40 .9157
27.45 .9174
27.50 .9191
27.55 .9207
27.60 9224
27.65 .9241
27.70 .9258
27.75 .9274
27.80 .9291
27.85 .9308
27.90 .9324
27.95 .9341
28.00 .9358
28.05 .9375
28.10 .9391
28.15 .9403
28.20 .9425
28.25 .9441
28.30 .9458
28.35 .9475
28.40 .9491
28.45 .9508
28.50 .9525
28.55 .9542
28.60 .9558
28.65 .9575
28.70 .9592
28.75 .9608
28.80 .9625
28.85 .9642
28.90 .9659
28.95 .9675
29.00 .9692
29.05 .9709
29.10 .9725
29.15 .9742
29.20 .9759
29.25 .9776
29.30 .9792
29.35 .9809
29.40 .9826
29.45 .9842
29.50 .9859
29.55 .9876
29.60 .9893
29.65 .9909
29.70 .9926
29.75 .9943
29.80 .9959
29.85 .9976
29.90 .9993
29.92 1.0000
29.95 1.0010
30.00 1.0026
30.05 1.0043
30.10 1.0060
30.15 1.0076
30.20 1.0093
30.25 1.0110
30.30 1.0127
30.35 1.0143
30.40 1.0160
30.45 1.0177
30.50 1.0193
30.55 1.0210
30.60 1.0227
30.65 1.0243
30.70 1.0260
30.75 1.0277
30.80 1.0294
30.85 1.0310
30.90 1.0327
30.95 1.0344
31.00 1.0360
31.05 1.0377
31.10 1.0394
31.15 1.0411
31.20 1.0427
31.25 1.0444
31.30 1.0461
31.35 1.0477
31.40 1.0494
31.45 1.0511
31.50 1.0528
31.55 1.0544
31.60 1.0561
31.65 1.0578
31.70 1.0594
31.75 1.0611
31.80 1.0628
31.85 1.0645
31.90 1.0661
31.95 1.0678
32.00 1.0695
32.05 1.0711
32.10 1.0728
32.15 1.0745
32.20 1.0762
32.25 1.0778
32.30 1.0795
32.35 1.0812
32.40 1.0828
32.45 1.0845
32.50 1.0862
32.55 1.0879
32.60 1.0895
32.65 1.0912
32.70 1.0929
32.75 1.0945
32.80 1.0962
32.85 1.0979
32.90 1.0995
32.95 1.1012
33.00 1.1029
33.05 1.1046
33.10 1.1062
33.15 1.1079
33.20 1.1096
33.25 1.1112
33.30 1.1129
33.35 1.1146
33.40 1.1163
33.45 1.1179
33.50 1. 1196
33.55 1.1213
33.60 1.1229
33.65 1.1243
33.70 1.1263
33.75 1.1280
33.80 1.1296
33.85 1.1313
33.90 1.1330
33.95 1.1346
34.00 1.1363
34.05 1.1380
34.10 1.1397
34.15 1.1413
34.20 1.1430
34.25 1.1447
34.30 1.1458
34.35 1.1480
34.40 1.1497
34.45 1.1514
34.50 1.1530
34.55 1.1547
34.60 1 1564
34.65 1.1580
34.70 1.1597
34.75 1.1614
34.80 1.1631
34.85 1.1647
34.90 1.1664
34.95 1.1681
35.00 1.1697
35.05 1.1714
35.10 1.1731
35.15 1.1747
35.20 1.1764
35.25 1.1781
35.30 1.1798
35.35 1.1814
35.40 1.1831
35.45 1. 1848
35.50 1.1864
35.55 1.1881
35.60 1.1898
35.65 1.1915
35.70 1.1931
35.75 1.1948
35.80 1.1965
35.85 1.1981
35.90 1.1998
35.95 1.2015
36.00 1.2032
For values not shown in table, interpolate or use equation:
Pcf =
୔ ୤୪୭୵
୔ ୆ୟୱୣ
=
୔ ୤୪୭୵
ଶଽ.ଽଶ
Pcf = Pressure Conversion Factor
P base = Assigned Base Pressure of 29.92 inches mercury absolute
P flow = Laminar Inlet Pressure, inches mercury absolute
The equation can be used up to and including two atmospheres absolute. It will be necessary to
calibrate laminars for pressure exceeding above.