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 The
Coriolis mass flow meter measurement principle is based on Newton's
Second Law of Motion: Force = Mass x Acceleration (F = M x A).
Inside the meter, flow is diverted into two parallel tubes that
vibrate at high frequency via an electromagnetic drive coil.
The tube loops have varied shapes, sometimes forcing the fluid
through several 90° turns before rejoining the flow line.
Upward and downward forces are exerted when the fluid goes through
the turns, causing a tube deflection known as the Coriolis Effect.
This tube deflection is directly proportional to mass flow.
Velocity detectors measure the time difference between the upward
and downward forces of the flow and the tube, to indicate the
mass flow rate.
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