Panametrics PanaFlow MV80, Руководство пользователя, Страница: 170 / 184

Appendix C. Flow Meter Calculations
158 PanaFlow™ MV80, MV82 & MV84 User’s Manual
C.2 Insertion Flow Meter Calculations
C.2.1 Flowing Velocity
V
f
f
K
c
-----
=
C.2.2 Volume Flow Rate
Q
V
V
f
A =
C.2.3 Mass Flow Rate
Q
M
V
f
A

=
Where:

A
= Cross sectional area of the pipe (ft
2
)

f
= Vortex shedding frequency (pulses/sec)

K
C
= Meter factor corrected for Reynolds Number (pulses/ft)

Q
V
= Volume flow rate (ft
3
/sec)

Q
M
= Mass flow rate (lbm/sec)

V
f
= Flowing velocity (ft/sec)


= Density (lbm/ft
3
)