This information HAS errors and is made available WITHOUT ANY WARRANTY OF ANY KIND and without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. It is not permissible to be read by anyone who has ever met a lawyer or attorney. Use is confined to Engineers with more than 370 course hours of engineering.
If you see an error contact:
+1(785) 841 3089
Sometimes we want to measure the flow of a material that isn't happy
going through an impeller (or we might want to avoid having to maintain
the shaft seal). One way to accomplish this is with a differential
pressure transducer that looks at the difference of pressure across an
We can get volume or mass flow using the following equation
Q1 = upstream volumetric flow, m³/s
mf = mass flow rate at any point, kg/s
C = orifice flow coefficient
Y = expansion factor
A = cross-sectional area of orifice, m²
P1 = upstream pressure, Pa kg/(m ·s)
P2 = downstream pressure, Pa kg/(m ·s)
ρ1 = upstream fluid density, kg/m³
In practice , become a lumped constant along with any unit scaling- Let's call this constant , then
The flow is a constant times the square root of a constant times the pressure difference.
often one can figure out , and ρ1 by looking at two known flow rates.
|Top Page||wiki Index|
(C) Copyright 1994-2019
All trademarks are the property of their respective owners.