Using Accurate Magnetic Flow Meters For Multiple Applications

When reliability and high accuracy is required in flow measurement applications

, the magnetic flow meter is the standard tool for the task. The magnetic flow meter is not impeded by the limitations of other types of flow meters, especially ones with mechanical or sensitive moving parts and thus can be used in a wider array of applications and establishments. Knowing the advantages and specifics on how these advanced flow meters work can help in proper installation as well as ensure that all factors are accounted for in creating accurate measurements for the specific application it will be used in.

Fundamentals behind Magnetic Flow Meter Operation

This type of flow meter, which should technically be called an electromagnetic flow meter, uses a magnetic field inside the measuring tube and measures the potential difference caused by the flow velocity to produce an accurate measurement of the flow inside the tube. Because the process relies on the measurement of potential difference, applications are limited to liquids that are conductive and the installation requires an insulating pipe surface for the electricity. Because there are no moving parts that come into contact with the liquid being measured, they can be used with dirty liquids such as waste water and are often used in applications where low maintenance is preferred and only small pressure drops can be tolerated in the system.

Industries that Use Magnetic Flow Meters

This particular type of flow meter is extremely popular for applications where other meters will simply break due to exposure to impurities in the liquid and when sanitary and hygienic concerns demand minimal maintenance to the flow system. Popular use include the waste water, water supply, chemical, food processing, beverage manufacture, and pharmaceutical industries. Because of the way they work magnetic flow meters can also be used for the efficient measurement and movement of corrosive liquid.

Selection Factors and Current Advances

A modern magnetic flow meter can have an analog or digital output as well as the ability to be used with integral and remote display and monitoring systems. Some advanced models can even hook up to smart wireless networks and perform self-verification and diagnostics as part of their maintenance cycle. Major concerns that should be considered before the installation of a flow meter include pipe size, if the pipe is constantly filled, the chemical compatibility of the liquid to be measured and the parts of the pipe and meter system it will come in contact with, minimum and maximum tolerances for pressure and temperature, abrasive and viscosity properties of the liquid, as well as general conductivity minimums of the liquid to be measured.

A magnetic flow meter is a highly advanced and effective liquid measuring tool for many applications. Consider using one for your application for additional efficiency and accountability of a system.

by: Riaz Danish

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