TSI Alnor 9880 Manual Del Usuario página 20

velocity readings (as indicated by the meter) by the
following density correction factor:
Act Vel
Where
T = Ambient temperature in °F
P = Ambient pressure in psia
If you use metric units, the equation becomes:
Act Vel
Where
T = Ambient temperature in °C
m
P = Ambient pressure in kPa
m
18
=
. . Std Vel
=
. . Std Vel

460
. .
 
460 70

273
. .
 
273 211
+

T 14 7 .
 
+
P
+

T 1014
m
 
+
. P
.
m