Electromagnetic Flow Meter


  • Recognize the electromagnetic (mag) flow meter
  • Explain the function of the mag flow meter

What's a Flow Meter?

A flow meter is used to measure flow rate through a fixed area, like a pipe.

This measurement is usually expressed in terms of volume/time for a volumetric flow rate measurement (such as gpm, or m3/minute).

Types of Flow Meters

Industrial settings have a wide range of fluids with very different properties.

There are several different methods available to measure the flow rate of these fluids.

For example, some flow meters are:

  • Mechanical (a physical component is moved by the flow)
  • Pressure-based (uses principles to infer flow rate from pressure differential)
  • Electromagnetic (a magnetic field is used to determine flow rate)

The properties of the fluid, along with environmental conditions will determine which flow meter is the best choice to measure a given fluid’s flow rate.

Electromagnetic Flow Meters (AKA Mag Flow Meters)

Electromagnetic flow meters have a couple of advantages over mechanical and pressure-based flow meters.

  • They don't restrict flow in any way.
  • They can measure dirty fluid containing large particles or thick slurry-type fluids.


The fluid must be conductive!

This is just a preview!

Become a member to get immediate access to the rest of this lesson, and all the other great content on LunchBox Sessions.

Join Now

Already a member? Log In
Not ready to join? Back to the menu.

We hope you enjoyed Electromagnetic Flow Meter

Vacuum Pressure
Drain Pressure
Low Pressure
Medium Pressure
High Pressure
Lowest Voltage
Medium Voltage
Highest Voltage
Magnetic Field
Check Your Console