Electromagnetic flow meter

Basic idea and principle of electromagnetic flow meter.

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?