Electromagnetic Flow Meters

A reliable source for Flow Meter information and leading Flow Meter Companies & Manufacturers.

One way to understand the way that electromagnetic flow meters work is by considering Faraday’s Law of electromagnetic induction. Faraday’s Law states that, as it moves at right angles through a magnetic field, the voltage produced by a conductor is proportional to its (the conductor’s) velocity. Read More…

Electromagnetic Flow Meters Electromagnetic flow meters, also known as magnetic flow meters, mag meters, or even electromags, are a type of volumetric flow meter. They determine flow rate using a magnetic field that is applied directly to the metering tube. This magnetic field creates a potential difference that is proportional to the velocity of the fluid flow inside the tube, perpendicular to the flux lines. The meters measure this difference in order to get the flow rate. They do so using sensing electrodes that applied to the magnetic field in such a way that they are aligned perpendicularly to the flow.

Leading Manufacturers

West Valley City, UT  |  800-316-5342

Established in 1990, HydraCheck is the market leader in developing, manufacturing, and selling engineered flow meters. Well known for their modular design, high performance and superior quality, HydraCheck boasts a full line of flow meters and transmitters as well as accessories such as displays, counters and indicators to ensure every customer receives the most suitable flow meter for any application.

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HydraCheck $$$

Orangeburg, NY  |  800-866-3837

Aalborg Instruments & Controls is a globally recognized manufacturer of precision instrumentation for flow measurement and control. We offer variable area flow meters, thermal mass flow controllers, and more. Since our founding in 1972, it has been our commitment to develop, produce and deliver the highest quality products and services, as well as consistently meet or exceed customer requirements. We are ISO 9001:2015 certified.

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Aalborg Instruments & Controls, Inc. $$$

Concord, CA  |  925-687-8363

Since our founding in 1972, RCM Industries has served industries ranging from pharmaceutical to chemical to food and beverage. Our flow meters are designed to improve productivity, reduce cost, and protect the most sensitive equipment and processes. All flow meters are suitable for measuring water, oil, and most low viscosity liquids, and are available in Monel, stainless steel, and bronze alloys. No matter what your application, we aim to exceed your expectations.

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RCM Industries, Inc. $$$

Marlborough, MA  |  888-738-0188

Spire Metering Technology offers one of the broadest, most affordable lines of flow measurement and energy metering products in the industry today. Through continuous innovation, we transform complex ultrasonic technology into affordable, reliable solutions for accurate flow and energy measurement.

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Spire Metering Technology $$$

Trevose, PA  |  215-355-8400

Thermal Instrument Company offers a wide range of thermal flow meters and flow switch products. Our products include mass flow meters, inline flow meters, insertion probes and signal processors. We serve the chemical processing, food, landfill and pharmaceutical industries.

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Thermal Instrument Company $$$
placeholder image HydraCheck Aalborg Instruments & Controls, Inc. RCM Industries, Inc. Spire Metering Technology Thermal Instrument Company

In flow meter terms: electromagnetic flow meters use signal voltage in order to determine velocity, where the flow rate of the conductor is the fluid. For this reason, it is essential that the fluid used with electromagnetic flow meters is conductive and water based. In addition, the pipe in which the fluid flows must have a nonconducting liner. The electrodes must not be allowed to corrode.

These flow meters only work with conductive and water-based fluids. They’re ideal for measuring flow rate of dirty liquids. However, they can work with a wide range of fluids; in fact, they are widely considered the third most common type of flowmeter. This is largely due to the fact that they have no moving parts, which means that they require less maintenance, and tend to last longer.

Because electromagnetic flow meters can only be used with conductive, water-based fluids, before making the decision to purchase one, ask yourself the following questions about your application: Does my application used conductive fluid? Is my application fluid abrasive? What is the minimum and maximum flow rate of my application? Is my pipe always full?

Even if you ask yourself all the right questions, the only way to know without a doubt that this type of flow meter is right for you is by talking over your application with an experienced flow meter manufacturer. In fact, a good manufacturer, like one of those we have listed on this site, will be able to provide you with a custom flow meter, if you wish.

Electromagnetic Flow Meter Informational Video