A Cone or V-Cone flow meter is a differential pressure device.
An obstruction in the pipe (i.e., a reduction in the cross-sectional area available to the flow) causes an increase in the velocity of the flowing fluid and a corresponding reduction in its pressure.
How it Works
As the fluid approaches the V-Cone flow meter, it will have a pressure of P1.
As the fluid flows past the constricted area of the V-Cone its velocity increases and its pressure drops to P2. Both P1 and P2 are measured at the V-Cone flow meter’s taps using a differential pressure transducer.
The differential pressure (Dp) measured at the V-Cone flow meter will increase and decrease with the flow velocity.
No case study available at this time.
Differential pressure meters work on the principle of calculating a flow rate based on the change in pressure between two measured points.