Carrying out flow measurements according to this principle requires components capable of generating a magnetic field within an insulated metering tube. An electromagnetic coil applies the field to the interior of the pipe and electrodes assess the voltage of the conductive fluid as it flows through the cross-section.
This article will explore the use of electromagnetic flow meters in more detail:
Basic operating principles of an electromagnetic flow meter
An electromagnetic flow meter operates on Faraday’s Law of Induction, a fundamental principle of electromagnetism. This posits that there is a proportional interaction between the induced signal voltage of a conductor and its velocity as it flows through a magnetic field in a perpendicular direction. Assessing the signal voltage of wastewater as it flows through an electromagnetic cross-section, for example, informs observation of its actual velocity as it travels through a pipeline.
An electromagnetic flow meter is equipped with a dielectric liner material such as hard rubber or ceramic carbide. This ensures that the magnetic field is localized with extreme precision to the inner diameter of the process tube. Electrodes within the component can then accurately acquire the voltage of the conductive media as it flows through the cross-section with negligible interference from conductive metal components.
The acquisition of this data is also unaffected by temperature, pressure, density, or viscosity of the conductive media. This allows the component to assess the solid and amorphous composition of a liquid or gas flow system, enabling the detection of various contaminants.
Electromagnetic Flow Meters from ABB
ABB is an industry-leading supplier of process-control equipment for an extensive range of industries. We provide over 60 electronic flow meters with distinct measurement methodologies, including mass flow, thermal mass, and variable area flow meters.
Our electromagnetic flow meters are divided into two distinct categories: process industry; and water treatment mag flow meters. This range includes:
If you would like any more information about our electromagnetic flow meters, please find your local contact below.
With high quality products and considerate service, we will work together with you to enhance your business and improve the efficiency. Please don't hesitate to contact us to get more details of Rosemount 8705 Flanged Magnetic Flow Meter Sensors, Coriolis Flow Meter.