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Example No. 1
You want to measure the actual velocity in a duct.
The air temperature in the duct is 55°F and the
pressure is 14.24 psia. You take a measurement and
the display reads 1200 fpm.
=
Act Vel
.
.
Example No. 2
You need to measure the actual velocity in a
plenum. The air pressure is 99.4 kPa and the
temperature is 27°C. The display reading on the
meter is 2.30 m/s.
=
Act Vel
.
.
16
460 + 55
1200
460 70
273+ 27
2 30
.
+
273 211
14 7
.
+
14.24
1014
.
.
99.4
=
12037
.
ft
=
2 39
.
m s
/
/ min
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