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Electromagnetic flowmeter, also known as electromagnetic flow meter, is a device used to measure the flow rate of conductive liquids. It operates on the principle of Faraday's law of electromagnetic induction.

The electromagnetic flowmeter consists of a flow tube, coils, electrodes, and a transmitter. The flow tube is made of non-conductive material with a lining of electrically conductive material. The coils are mounted around the flow tube and generate a magnetic field when supplied with current. The electrodes are located inside the flow tube and detect the voltage generated by the flowing liquid. The transmitter processes the electrical signals from the electrodes and converts them into flow rate measurements.

One of the major advantages of the electromagnetic flowmeter is its ability to accurately measure the flow rate of various liquids, including corrosive and abrasive fluids. Since it does not have any moving parts, it offers low maintenance and long service life. It is also unaffected by changes in temperature, pressure, or viscosity of the liquid being measured.

In addition, the electromagnetic flowmeter has a wide measuring range and high accuracy. It can measure flows from a few liters per hour to tens of thousands of cubic meters per hour. The accuracy of the measurements is typically within ±0.5% to ±1% of the actual flow rate.

The electromagnetic flowmeter is widely used in industries such as water and wastewater treatment, chemical processing, pharmaceuticals, food and beverage, and oil and gas. It can be installed in pipes of various sizes and materials, including steel, stainless steel, plastic, and concrete.

In summary, the electromagnetic flowmeter is an essential device for accurate and reliable flow rate measurement of conductive liquids. Its wide range, high accuracy, and various applications make it a preferred choice in many industries.