Electromagnetic flowmeters, also known as mag meters, are devices used to measure the flow rate of conductive liquids. They work on the principle of Faraday's Law of Electromagnetic Induction, where a magnetic field is applied to a conductive fluid, and the voltage generated is proportional to the flow rate.
Electromagnetic flowmeters are widely used in industries such as water treatment, chemical processing, and food and beverage production. There are various types of electromagnetic flowmeters available, each with its own set of features and benefits. In this article, we will discuss some of the common electromagnetic flowmeters.
Full Bore Electromagnetic Flowmeters
Full-bore electromagnetic flowmeters are designed to measure the flow rate of liquids in pipelines with a full-bore construction. They have no internal obstructions, which means that there is no pressure drop or flow disturbance. These flowmeters are widely used in water and wastewater treatment plants, where accurate measurement of flow rates is critical. Full-bore electromagnetic flowmeters can measure flow rates up to 10,000 cubic meters per hour and are available in a range of sizes from 1 inch to 80 inches.
Insertion Electromagnetic Flowmeters
Insertion electromagnetic flowmeters are designed to be installed into existing pipelines without the need for costly modifications. They are inserted into the pipeline through a small tap, and the sensor is positioned so that it is in contact with the flowing liquid.
Insertion electromagnetic flowmeters are ideal for measuring flow rates in large pipelines and are commonly used in the water and wastewater treatment industry. They can measure flow rates up to 10,000 cubic meters per hour and are available in sizes ranging from 2 inches to 120 inches.
Sanitary Electromagnetic Flowmeters
Sanitary electromagnetic flowmeters are designed to measure the flow rate of liquids in sanitary environments such as food and beverage production and pharmaceutical manufacturing.
They are made from materials that are compatible with food-grade and pharmaceutical-grade liquids and are designed to meet FDA and other regulatory standards. Sanitary electromagnetic flowmeters are available in a range of sizes from 1/2 inch to 4 inches and can measure flow rates up to 100 cubic meters per hour.
Battery-Powered Electromagnetic Flowmeters
Battery-powered electromagnetic flowmeters are designed for applications where there is no power supply available or where portability is required.
They are powered by an internal battery and can be used for up to several years before the battery needs to be replaced. Battery-powered electromagnetic flowmeters are available in a range of sizes from 1/2 inch to 12 inches and can measure flow rates up to 250 cubic meters per hour.
High-Temperature Electromagnetic Flowmeters
High-temperature electromagnetic flowmeters are designed to measure the flow rate of liquids at high temperatures, up to 200°C.
They are commonly used in industries such as chemical processing and power generation, where high temperatures are present. High-temperature electromagnetic flowmeters are available in a range of sizes from 1/2 inch to 12 inches and can measure flow rates up to 2,000 cubic meters per hour.
Low-Flow Electromagnetic Flowmeters
Low-flow electromagnetic flowmeters are designed to measure the flow rate of liquids in low-flow applications, such as chemical dosing and batching. They are capable of measuring very low flow rates, down to 0.1 liters per minute, with high accuracy. Low-flow electromagnetic flowmeters are available in sizes ranging from 1/4 inch to 2 inches.
Electromagnetic flowmeters are widely used in various industries for accurate measurement of liquid flow rates.