Magnetic Flow Meter

Standard concept:

When a flowing performing liquid undergoes a transverse electromagnetic field, the streaming carrying out liquid cuts the magnetic field strength and causes a voltage to be caused. This induced voltage is symmetrical to the fluid velocity, that is, flow rate.


The main parts of this tool are as follows:

A conducting liquid is moving with a non-magnetic and also non-conducting pipeline, whose flow price is to be determined.

2 electrodes are connected in opposite sides of pipeline coming with the carrying out fluid. These electrodes are in contact with the streaming conducting fluid.

The pipe is surrounded by an electromagnet which produces which creates an electromagnetic field.


This magnetic flowmeter is based upon Faraday's law of generated voltage which is offered as complies with,.

E = BLV.


E = generated voltage(volts).

B = change thickness (Gauss).

L = Length of conductor which is the size of the water pipes (centimeters).

V = Average speed of conductor (liquid) in cm/sec.

When the carrying out liquid flows with the pipe which is subjected to a magnetic field strength, the performing fluid cuts the magnetic field strength and also due to this a voltage is induced. As the magnetic field is constant, voltage obtained across the electrodes will certainly be straight symmetrical t average liquid speed as well as diameter (length) as well as for this reason becomes an action of volume circulation rate.


Utilized to measure circulation rates of performing fluids.

Made use of to measure circulation rates of slurry, corrosive and rough fluids.

Magnetic flow meter is used to measure bidirectional flows by reversing connections which can be done automatically.


These meters do not create obstruction to stream as well as for this reason trigger no pressure drop.

For dimensions, it does not matter whether the circulation is laminar or rough.

It provides accurate results.

Its dependability is high, that is, it gives a common efficiency for an elongated period of time.

It could manage oily materials and also liquids including put on hold solids.

The measurement is independent of viscosity, density, temperature as well as stress.


The liquid whose circulation rate is to be gauged need to please specific conduction conditions.

The liquid ought to be complete in the water pipes to get precise results.

Air and gas bubbles in the fluid will certainly cause errors. With specific fluids, the electrodes could get coated with scales and this will certainly influence the result signal. However, this can be taken care off by cleaning the electrodes.

In many cases, the output voltage is reduced as well as thus calls for amplification.