TSI Instruments ALNOR AXD 530, Owner'S Manual

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19
Density Correction Factors
For Different Altitudes and Temperatures
Air Altitude (ft.)
Temp
F° Sea
Level
1000
2000
3000
4000
5000
6000
7000
8000
9000 10000
-40° 0.89 0.91 0.92 0.94 0.96 0.98 1.00 1.02 1.04 1.05 1.07
0° 0.93 0.95 0.97 0.99 1.01 1.03 1.05 1.06 1.08 1.10 1.13
40° 0.97 0.99 1.01 1.03 1.04 1.07 1.08 1.10 1.13 1.15 1.17
70° 1.00 1.02 1.04 1.06 1.08 1.10 1.12 1.14 1.16 1.19 1.20
100° 1.03 1.04 1.07 1.08 1.11 1.13 1.15 1.17 1.20 1.21 1.24
150° 1.07 1.09 1.11 1.13 1.15 1.18 1.20 1.22 1.24 1.27 1.29
200° 1.12 1.14 1.16 1.19 1.20 1.23 1.25 1.27 1.29 1.32 1.35
250° 1.15 1.18 1.20 1.22 1.25 1.27 1.29 1.31 1.34 1.36 1.40
300° 1.20 1.22 1.24 1.27 1.29 1.31 1.34 1.36 1.39 1.41 1.44
350° 1.24 1.27 1.29 1.31 1.34 1.36 1.39 1.40 1.43 1.46 1.49
400° 1.27 1.29 1.32 1.35 1.37 1.40 1.43 1.44 1.47 1.51 1.54
450° 1.31 1.34 1.36 1.39 1.41 1.44 1.47 1.49 1.52 1.54 1.58
500° 1.35 1.37 1.40 1.43 1.46 1.49 1.51 1.52 1.56 1.60 1.62
550° 1.37 1.40 1.43 1.46 1.49 1.51 1.54 1.56 1.60 1.62 1.67
600° 1.41 1.44 1.47 1.49 1.52 1.56 1.58 1.60 1.64 1.69 1.71
700° 1.47 1.51 1.52 1.56 1.60 1.62 1.64 1.69 1.71 1.74 1.77
800° 1.54 1.58 1.60 1.64 1.67 1.69 1.74 1.77 1.80 1.83 1.86
900° 1.60 1.64 1.67 1.69 1.74 1.77 1.80 1.83 1.86 1.89 1.92
1000° 1.67 1.69 1.74 1.77 1.80 1.83 1.86 1.89 1.92 1.96 2.00
Standard Air Density = 0.075 lb/cu ft
Appendix E: Effects of Resolution on
Accuracy Statement
The AXD530 MicroManometer has a resolution of .01 inches H
2
O
(1 Pa in metric units).
The accuracy statement reads ± (1% of indicated r
resolution). At very low differential pressures, therefore, the accuracy
approximates the resolution.
e.g. differential pressure of .01 inches H
2
O accuracy statement is ±
(.01 x .01 + .01) or ± .0101 inches H
2
O or reading error is ±
101% of reading.