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How does an electromagnetic flowmeter work?

Electromagnetic flowmeters (EMFs) - often called mag flowmeters - are incredibly useful devices for the control of precision dosing operations and flow measurement applications. So, what is an electromagnetic flow meter, and how does an electromagnetic flowmeter work? Continue reading this helpful guide from Bürkert for the answers to these questions and more.

What is an electromagnetic flowmeter?

Electromagnetic flowmeters are used for control and flow measurement purposes. They use Faraday’s Law to determine the flow of liquid within a pipe. The flow of a conductive liquid through the magnetic field causes a voltage signal to be sensed by electrodes located on the flow tube walls. The voltage that is generated is proportional to the movement of the flowing liquid. Essentially, the faster the fluid flows, the more voltage is generated.

The electromagnetic flowmeter, therefore, processes the voltage signal to determine the liquid flow.

How does an electromagnetic flowmeter work?

An electromagnetic flowmeter works depending on the type that you select. At Bürkert, you can find two types of electromagnetic flowmeters: insertion and full bore.

Insertion Electromagnetic Flowmeter

We have an excellent selection of insertion electromagnetic flowmeters. They are made up of an electronic module and a PVDF or stainless steel sensor to measure a flow rate of neutral and slightly aggressive fluids with a conductivity of more than 20 µS/cm in DN06 to DN400 pipes.

Full Bore Electromagnetic Flowmeter

We also have an extensive selection of full-bore electromagnetic flowmeters at Bürkert. These electromagnetic flowmeters consist of a magnetic sensor fitting that’s connected to an electronics type. They’re designed to give flow measurement readings for applications involving liquids, with a minimum conductivity of 5 μS/cm.

Which applications use electromagnetic flowmeters?

There is a wide range of applications that make use of electromagnetic flowmeters. Ones with a stainless steel sensor can be used in applications with high pressures of up to PN16 and high temperatures of up to +150°C. 

Meanwhile, other versions that have a stainless steel sensor, can be used in applications with the same high pressures but are limited to temperatures of +110°C due to an integrated LCD display. Furthermore, flowmeters with Alloy C22 electrodes are designed for applications with aggressive fluids and seawater applications.

Within our full-bore electromagnetic flowmeter range, we have designs that are used for low flow volumes, making them suitable for Clean in Place (CIP) applications.

We also have flowmeters that are designed for water treatment and general-purpose applications. Combined with an actuated valve, a complete full-bore electromagnetic flowmeter can control high-precision dosing operations and flow measurement in food and beverage or pharmaceutical applications.

Benefits of an electromagnetic flowmeter

There are many benefits of using electromagnetic flowmeters for your applications. Insertion electromagnetic flowmeters, for example, feature sensors without moving parts and are manufactured from FDA-approved materials. They’re also suitable for CIP applications and can be fitted with G2” connections for PVDF sensor versions, with a further clamp connection option for stainless steel sensor versions.

All full-bore electromagnetic flowmeters at Bürkert offer a complete solution for continuous measurement or batch control. They’re great for use in various applications ranging from water treatment to hygienic food and beverage, and pharmaceutical applications. Combined with a valve as the actuating element, these versatile electromagnetic flowmeters are ideal for controlling high-precision dosing operations and flow measurements.

Full bore electromagnetic flowmeter – Type 8051

 

 

Our full bore magnetic flowmeter Type 8051, which consists of a magnetic sensor fitting Type S051 connected to an electronics Type SE56. Designed for applications with liquids with a minimum conductivity of 5 μS/cm. Combined with a valve as the actuating element, the complete full bore mag flowmeter Type 8051 is ideal for ratio control and flow measurement applications.

  • Combination of magflow sensor fitting S051 and electronics SE56.
  • Continuous measurement or Batch Control.
  • Clean in place (CIP).
  • Low-flow measurements on from 3 l/h.

Full bore electromagnetic flowmeter – Type 8054/8055

 

The full bore electromagnetic flowmeter Type 8054/8055 consists of a magnetic sensor fitting Type S054 or S055 connected to an electronics Type SE56. These sensors consist of a stainless steel pipe section internally lined with insulating material and two electrodes, mounted opposite to each other on the internal surface of the tube, generate an electrical signal.

Features and benefits:

  • Continuous measurement or batch control.
  • Version without (S054) or with (S055) flanges.
  • For water treatment and general purpose applications.
  • Combination of magflow sensor fitting S054 or S055 and electronics SE56.

Full bore electromagnetic flowmeter – Type 8056

 

The Type 8056 full bore flowmeter consists of a magnetic sensor fitting Type S056 connected to an electronics Type SE56. It too is designed for applications involving liquids with a minimum conductivity of 5 μS/cm. Combined with a valve as the actuating element, this full bore magnetic flowmeter can control high-precision dosing operations and flow measurement in food and beverage or pharmaceutical applications.

  • Combination of magflow sensor fitting S056 and electronics SE56.
  • Continuous measurement or Batch Control.
  • Sanitary version, 3A certificate.
  • Dedicated to food & beverage or pharmaceutical applications.
  • Low-flow measurements on from 3 l/h.

If you'd like more information, please contact our team on +44 1285 648 720, email sales.uk@burkert.com or fill in the form below.