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Electromagnetic flowmeter

Electromagnetic flowmeter, as a high-precision flow measurement instrument, is widely used in various fields of industrial production.

Electromagnetic flowmeter has become a powerful tool for industrial flow measurement due to its scientific working principle, outstanding performance advantages, and wide application fields. With the continuous improvement of industrial automation and technological innovation, electromagnetic flowmeters will continue to be upgraded, injecting precise and efficient power into the development of more industries and playing a more important role in future industrial development.

The Mejor’s Electromagnetic flowmeter does not contain any moving parts, rotating gears or turbines, or bearings. Instead, it relies on two electrodes to measure the density of the induced magnetic field that results from an electrically conductive fluid, such as water, flowing through a pipe. So there is no susceptibility to bearing wear or other mechanical wear-and-tear issues.

The Mejor’s Electromagnetic flowmeters are widely used in the measurement and control of process flow in industrial and agricultural production companies such as petrochemicals, steel metallurgy, water supply and drainage, water conservancy irrigation, water treatment, sewage treatment stations (environmental protection sewage control, chemical sewage, electroplating sewage), papermaking (pulp), mud, medicine, food, etc.

As for the electrodes and the liner used in electronic water meter, these components can be fabricated from a variety of materials to make the meter compatible with different conditions of water.

The only limitation of the electronic water meter is that the measured fluid media must be electrically conductive (>5μS/cm). Non-conductive fluids, such as oil and other petroleum-based fluids, cannot be measured with the technology.

 Product Electronic water meter
 Model MEJOR200
 Diameter nominal DN15~DN1000
 Nominal pressureDN15 – DN250, PN ≤1.6MPa
DN300 – DN1000, PN ≤1.0MPa
 AccuracyClass 2(Please see datasheet for details)
 Repetitiveness0.16%
 Liner materialNeoprene (CR), Polyurethane (PU), PTFE (F4), PFEP (F46), PFA
 Electrode material316L Stainless Steel, Hastelloy C, Hastelloy B, Ti, Ta, Pt
 Medium temperatureNeoprene: -10…+70℃ Polyurethane: -10…+60℃ PTFE/FEP: -10…+120℃ PFA: -10…+120℃
 Power supply220VAC, 24VDC
 Structure type Compact type, Remote type
 Ingress protection IP65, IP68(remote type only)
 Product standard JB/T 9248-2015

Electromagnetic flowmeter works based on Faraday’s law, when the liquid goes through the pipe at the flow rate of v with a diameter D, within which a magnetic flux density of B is created by an exciting coil, the following electromotive E is generated in proportion to flow speed v:

E=K×B×V×D

Where:
E-Induced electromotive force 
K-Meter constant 
B-Magnetic induction density
V-Average flow speed in cross-section of measuring tube 
D-Inner diameter of measuring tube   

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