What Fields Can Electromagnetic Flow Meter be Applied?

An electromagnetic flow meter is an instrument that measures the volumetric flow of conductive liquids based on Faraday’s law of electromagnetic induction. Electromagnetic flowmeters are widely used in many industries due to their high accuracy, good stability, no moving parts and low resistance. making it widely used across industries such as petroleum, chemical, metallurgy, power, water management, and environmental protection.

Industry Applications of Electromagnetic Flow Meters:

Water Supply and Wastewater Treatment

This is the largest and most traditional application area for electromagnetic flowmeters.

Drinking Water Supply: Used for measuring the entire process flow—from the water plant output, pipeline transport, and district metering areas (DMA) to end-user billing.

Municipal Wastewater Treatment: Measures incoming wastewater, return sludge, chemical dosing, and treated effluent flows. It can handle media containing solid particles, fibers, and certain corrosive substances.

Industrial Wastewater Treatment: Measures wastewater discharged from various factories, including streams containing corrosive chemical components.

Chemical and Petrochemical Industry

This sector demands high reliability, safety, and corrosion resistance for flow measurements.

Corrosive Media: Measures the flow of acidic, alkaline, and saline chemical solutions.

Process Control: Provides precise flow data for production stages such as reactor feed, product mixing, and emulsion transfer.

Petrochemical Applications: While hydrocarbons like crude oil and gasoline cannot be measured (non-conductive), electromagnetic flowmeters are suitable for conductive media such as injected water, chemical additives, or cooling water.

Food and Beverage Industry:

These industries require high sanitary standards, with flowmeters that are easy to clean and have no dead zones.

Hygienic Electromagnetic Flowmeters: Made of polished stainless steel, featuring sandwich diaphragms and designed for CIP (Clean-In-Place) and SIP (Steam-In-Place) processes.

Applications: Measuring the flow of liquids such as medicinal solutions, purified water, water for injection, milk, juice, beer, wine, syrup, edible oils, and other raw materials or intermediates.

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Metallurgy and Mining Industry

This environment is harsh, with media containing high concentrations of solid particles and strong abrasiveness.

Slurry Measurement: Measures various slurries during mineral processing (e.g., iron concentrate, copper concentrate, coal slurry), one of the key applications.

Process and Cooling Water: Measures circulation flow of cooling water in equipment such as blast furnaces and converters.

Acid and Alkaline Solutions: In hydrometallurgical processes, measures acid and alkaline solutions used for leaching, electrolysis, and other operations.

Pulp and Paper Industry

The media are pulps containing fibers and chemicals, often viscous and prone to scaling.

Pulp Flow: Measures pulp concentration and flow throughout processes from pulping to paper formation.

Chemical Addition: Measures flow of fillers, coatings, and other chemical additives.

Energy and Power Industry

Thermal Systems: Measures boiler feedwater and circulating water.

Desulfurization Systems: In flue gas desulfurization (FGD) at thermal power plants, precisely measures limestone or gypsum slurry flow, a key application.

Other Industries

Heating and HVAC: Measures water flow in district heating or cooling systems.

Irrigation: Measures water volume in large-scale agricultural irrigation systems.

Electromagnetic flow meters are the workhorse for measuring conductive liquid flow, especially in water supply, chemical, food, metallurgy, and pulp & paper industries, where water, slurry, or corrosive liquids are involved. When selecting a flowmeter, it is essential to choose appropriate liner and electrode materials based on the medium’s corrosiveness, temperature, pressure, and sanitary requirements.