An electromagnetic flow meter uses Faraday's Law of electromagnetic induction to measure the volumetric flow rate of conductive liquids through a pipe without moving parts. It works by generating a magnetic field inside the pipe and measuring the voltage generated across electrodes on the pipe walls by the liquid flowing perpendicular through the magnetic field. The voltage is proportional to flow rate, magnetic field strength, and pipe diameter. Electromagnetic flow meters are ideal for wastewater and other dirty or corrosive liquids in pipelines and refineries due to their low maintenance needs and ability to measure both forward and reverse flow accurately.

1. IN THE NAME OF THE MOST GRACIOUS THE MOST MERCIFUL

2. Presented By: Rameez Ahmad Mughal BEC-01091032

3. ElectroMagnetic Flow Meter Topic:

4. 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.

5. 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.”

6. Faraday’s Formula E is proportional to V x B x D where: E = The voltage generated in a conductor V = The velocity of the conductor B = The magnetic field strength D = The length of the conductor (which in this instance is the distance between the electrodes)

7. 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.

10. Uses… Pipelines... Refineries...

11. 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.

12. Types of ElectroMagnetic Flow Meters

13. Questions?