Magnetic flow meter operation is based on Faraday’s law of electromagnetic induction.

“The voltage (E) induced in a conductor of length (D) moving through a magnetic field (H) is proportional to the velocity (V) of the conductor”

E=CHDV

where C is the dimensional constant .

**Advantages**

The magnetic flow meter measures volume rate at the flowing temperature independent of the effect of Viscosity , Density , Turbulence ,or suspended material

Most liquids can be measured by magnetic flow meters.

**Limitation**

Electrical conductivity of liquid

**Application of Magnetic flow meter**

Water , acids , base ,slurries ,liquids with suspended solids and industrial wastes are common applications .