A blunt object is inside the pipe causing a natural phenomenon, the frequency of this item is directly proportional to the velocity of the liquid flowing in the pipe.

Detecting bursts of sound that are traveling through a pipe this meter measures the flow.

Inside the pipe an impeller moves with the flow by passing a precise volume of fluid with each rotation.

This meter measures the force from the acceleration caused by the fluid mass moving away from the center of rotation.

This meter uses Bernoulli's Equation to determine the fluid velocity

Using the voltage that is induced when a conductor (the fluid) moves through a magnetic field this meter measures the flow.

A piston flow meter uses a plate to disrupt the flow and then measures the pressure difference before and after the plate.

) The opening in the orifice plate can be classified as a concentric, eccentric and segmental.

The opening in the orifice plate can be classified as a concentric, eccentric and segmental.

A coriolis flow meter will only work if the fluid passing through is able to be electrically conductive.