GE PanaFlow MV80, Руководство пользователя

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PanaFlow™ MV80 & MV82 User’s Manual 137
Appendix C. Flowmeter Calculations
Appendix C. Flowmeter Calculations
C.1 In-Line Flowmeter Calculations
C.1.1 Volume Flow Rate
C.1.2 Mass Flow Rate
C.1.3 Flowing Velocity
Where:
A = Cross sectional area of the pipe (ft
2
)
f
= Vortex shedding frequency (pulses/sec)
K = Meter factor corrected for thermal expansion (pulses/ft
3
)
Q
M
= Mass flow rate (lbm/sec)
Q
V
= Volume flow rate (ft
3
/sec)
V
f
= Flowing velocity (ft/sec)
ρ
= Density (lbm/ft
3
)
Qv
f
K
---
=
Q
M
Q
V
ρ
=
V
f
Q
V
A
-----
=