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Magnetic Flow Meters

Electromagnetic Flow Meters: The Ultimate Magmeter

The GTS range of electromagnetic flow meters offers low maintenance, accurate solutions to difficult fluid conditions. Magnetic flow meters, also known as electromagnetic flow meters or mag meters, are popular because they are multidirectional, and enable very precise volumetric flow (sometimes referred to as magnetic flow or mag flow) measurement. Magnetic flow metres are made up of a transmitter and a sensor that work in conjunction to measure flow. It's perfect for wastewater applications, as well as any unclean liquid that's conductive or water-based. Magmeters are also great for applications that demand minimal pressure drop and little maintenance.

Frequently Asked Questions About Magnetic Flow Meters

Q: How does a  magnetic flow meter work?

Magnetic flow meters use a magnetic field to generate and channel liquid flow through a pipe. A voltage signal is created when a conductive liquid ormagnetic flow moves through the flow meter’s magnetic field. The faster themagnetic flow, the greater the voltage signal generated.

Q: What are the advantages and disadvantages of an electromagnetic flow meter?


  • No moving parts make it easy to maintain and longer-lasting.
  • Magmeters are highly accurate with a range of ±0.2% of reading ±1 mm/s
  • They do not obstruct flow, making them suitable to measure many different types of fluids.
  • They measure the volume flow rate of the fluid under test and are minimally affected by the influence of temperature, pressure, density and viscosity of the fluid.


  • The measured fluid media must be able to conduct electricity. Non-conductive fluids such as oil and other petroleum-based fluids, cannot be measured.

Q: What is the minimum conductivity required for a medium?

Magnetic flow meters are best suited for bidirectional flow measures of fluids with a minimum conductivity of 5 μS/cm (microS/cm).

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