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what is the working principle of vortex flowmeter
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Answer Posted / muhammad imran
dear friend,
in vortex flometer, it is natural phenomenon that if you
put an obstructionin the path of flow, automaticaly vortex
are generated.in this case the important point to be
observed is that the number of vortexes generated are
directly propotional to the velocity of the flowing fluid
but the distance between vortex to vortex remain constant,
while we have the formula
v=F.lemda..... where the lemda is defiened as the distance
between vortexes which is constant.
and velocity is directly propotional to frequency.
where we can use several types of sensors to detect the
vortexes, such as piezo electric type sensor. when a
vortex will hit to the sensor the pulse is generated and by
calculating the number of pulces we can determine the
velocity and then flow.
YOU can physically observe this case.. ... but it is to be
needed to go near river and search the place where the
stones are up than water level. sit there and observe the
phenomenon
it is better to fo that place where the depth of water is
not more than 6 inch and flowing speed is not much fast
...... cisit that place daily and observe that when the
flowing speed is more that day the more vortexes are
generated
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