What are the Advantages and Disadvantages of Electromagnetic Flowmeter

Electromagnetic flowmeter is based on Faraday's law of electromagnetic induction for flow measurement, because of its own operating principle determines that it can measure conductive liquids, so it is widely used in sewage treatment, chemical industry and other fields.

But electromagnetic flowmeter due to the different manufacturing processes, not for the measurement of all media, the actual measurement in the field there will be many advantages and disadvantages.

Electromagnetic Flowmeter Advantages:

• No Moving Parts:

• Low Maintenance: The absence of moving parts reduces wear and tear, resulting in lower maintenance costs and longer lifespan.

• No Mechanical Failures: Less prone to mechanical issues compared to mechanical flow meters.

• High Accuracy:

• Precise Measurements: Typically offers high accuracy, often within ±0.5% of the measured value.

• Wide Turndown Ratio: Can measure a wide range of flow rates with consistent accuracy, with a wide rangeability (1:100).

• Works in Large Pipe Sizes

• Available in sizes from DN6 to DN2200, making them suitable for both small and large pipelines.

• No Obstruction to Flow:

• Full-Bore Design: The flow path is unobstructed, minimizing pressure drop and preventing clogging.

• Ideal for Slurries and Viscous Fluids: No risk of blockage or buildup in the flow path.

• Minimal Sensitivity to Fluid Properties:

• Unaffected by Density, Viscosity, or Temperature: Measures flow rate independently of these properties, as long as the fluid is conductive.

• Compatibility with Hygienic Applications:

• Sanitary Designs: Available in sanitary configurations for use in food, beverage, and pharmaceutical industries.

• CIP/SIP Compatibility: Can withstand cleaning-in-place (CIP) and sterilizing-in-place (SIP) processes.

• Suitable for Conductive Liquids:

• Wide Range of Applications: Ideal for measuring the flow of conductive liquids, including water, slurries, acids, and bases.

• Handles Abrasive and Corrosive Fluids: Can measure fluids with suspended solids or corrosive properties without damage to the meter.

Disadvantages of Electromagnetic Flowmeter

• Can not be used to measure the conductivity is very low or non-conductive liquid media, such as distilled water, petroleum products or organic solvents.

• Can not measure non-conductive media: such as gas, steam, etc., is limited to the measurement of conductive liquids.

• Electromagnetic flowmeter used to measure viscous liquids with dirt, viscous material or sediment attached to the inner wall of the measuring tube or electrode, so that the transmitter output potential changes, bringing measurement errors, electrode on the dirt to reach a certain thickness, may lead to the instrument can not be measured.

• Due to the measurement of the pipe insulation lining material by the temperature limitations, the current industrial electromagnetic flowmeter can not measure high temperature and high pressure fluid.

Electromagnetic flowmeter has the advantages of high measurement accuracy, wide measurement range, almost unaffected by the physical properties of the fluid, reliable and durable and low maintenance. However, there are also sensitive to the wall thickness of the pipeline, affected by electromagnetic interference shadow, higher installation requirements, the fluid conductivity requirements and slow response speed and other shortcomings.