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ELECTROMAGNETIC FLOW METER
An electromagnetic flow meter is a modern instrument that measures the flow of conductive liquids like water, wastewater, slurries, chemicals, and beverages. It is based on Faraday's Law of Electromagnetic Induction, which states that when a conductive fluid flows through a magnetic field, it produces a voltage. This voltage is directly proportional to the liquid's velocity, from which the flow rate is determined.
One of the primary benefits of electromagnetic flow meters is that they do not have any moving parts, which eliminates wear and tear and making them extremely dependable and durable. They give precise measurements even for fluids containing suspended particulates, making them appropriate for applications such as water treatment, food and beverage, pharmaceuticals, chemicals, and mining.
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These flow meters are also noted for their great accuracy and minimal maintenance requirements. They can handle vast amounts of fluid while providing consistent readings regardless of pressure, temperature, or viscosity variations. However, they only function with conductive fluids and cannot be utilized with oils or gasses.
Overall, the electromagnetic flow meter is an effective, precise, and long-lasting solution for modern enterprises that require accurate flow measurement for process control and resource management.
The induced voltage is proportional to the fluid velocity and thus the volumetric flow rate.​The governing equation is:
E = B × L × V
Where:
E = Induced Voltage.
B = Magnetic field strength.
L = distance between electrodes.
V = The fluid's average velocity.
The transmitter processes the signal and shows the flow measurement in user-friendly quantities such L/s, m³/h, and GPM.​​Electromagnetic flow meters (also known as mag meters) are used to measure the volumetric flow rate of conductive fluids by applying Faraday's Law of Electromagnetic Induction. Unlike many other flow meters, EMFMs do not have moving parts, making them extremely durable, low-maintenance, and suited for harsh industrial applications.