IN THE NAME OF

THE MOST GRACIOUS THE MOST MERCIFUL

Presented By:

• Rameez Ahmad Mughal• BEC-01091032

ElectroMagnetic Flow Meter

Topic:

Introduction

• A Electromagnetic flow meter is a volumetric flow meter which does not have any moving parts and is ideal for wastewater applications or any dirty liquid which is conductive or water based.

Working Principle

• The operation of a Electromagnetic flow meter or magmeter is based upon Faraday's Law, which states that:

• “The voltage induced across a conductor as it moves at right angles through the magnetic field is proportional to the velocity of that conductor.”

Faraday’s Formula

• E is proportional to V x B x D

where:E = The voltage generated in a conductorV = The velocity of the conductorB = The magnetic field strengthD = The length of the conductor

(which in this instance is the distance between the electrodes)

ElectroMagnetic flowmeter use Faraday's Law of Electromagnetic Induction to determine the flow of liquid in a pipe. In a magnetic flowmeter, a magnetic field is generated and channeled into the liquid flowing through the pipe. Following Faraday's Law, flow of a conductive liquid through the magnetic field will cause a voltage signal to be sensed by electrodes located on the flow tube walls.

Uses…

• Pipelines...

• Refineries...

Advantages & Disadvantage• Advantages:• Minimum obstruction in the flow path yields

minimum pressure drop.• It can measure forward as well as reverse flow with

equal accuracy.• Low maintenance cost because of no moving parts.• corrosive or slurry fluid flow.• Disadvantage:• Requires electrical conductivity of fluid.

Types of ElectroMagneticFlow Meters

Questions?