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Magnetic flow meters are often though of as the "perfect flow meter", since they are low-maintenance, offer high accuracy and are insensitive to viscosity, pressure and temperature changes and offer no restriction in the flowline and can handle fluids that most other types of flowmeter can not take.

They are ideal in plants where pressure drop losses must be kept to a minimum. They can also handle a wide range of corrosive fluids and heavy slurries.

Applications for magnetic flowmeters are:Monitoring and control of a variety of industrial effluentsPaper pulp wasteMining slurriesBrineLiquid food productsDetergentsWaste sludge in sewage treatment plants and water and waste industries.Corrosive acidsSolid bearing fluidsElectrolytesProcess chemical

Advantages for magnetic flow meters:Non obtrusive flow in full-bore modelsNo moving partsVirtually no pressure dropInsensitivity to viscosity, specific gravity, temperature and pressure (within certain limitations)Will work with laminar, turbulent, and transitional flowsCan respond well to fast changing flows (for high-frequency DC pulse and AC excitation designs only)Good accuracy (0.5 to 1%)Can handle slurries and heavy particulatesLining protectors available for harsh, chemically corrosive, and abrasive fluids

Disadvantages for magnetic flow meters:Fluid must be conductive (typically > 5µS/cm)Pipe must be grounded