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Flowmeters : Magnetic Flowmeter

A flowmeter is an instrumentation device used to measure and record the flow rate of a gas or fluid. Magnetic flow meters are actually the most common type of flowmeter after mechanical methods and are common in industrial piping systems. In a magnetic meter, a magnetic field is created around the pipe section being used to measure the flow. By the nature of electromagnetic induction, a potential difference is created that is proportional to the flow speed but perpendicular to the direction of flow. This potential difference is then measured and converted to flow speed.