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Electromagnetic Flow Meter

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We design and manufacture a new series of electromagnetic flow meters ELMAG. It is used to measure flow of any kind of conductive liquid and our product range also includes process control instruments and electronic process control instruments. These flow meters have become most popular as these are capable to measure flow very accurately. There are no moving parts, hence the liquid properties like viscosity, temperature, chemical properties don’t affect measurement accuracy.
Measuring Principle:
The electromagnetic flow meter works on Faraday’s law of Electromagnetic Induction. When a conductor is moved in a magnetic field, a voltage is induced in the conductor.
The voltage induced is calculated as:

  • U = K. B. V. D
  1. K = Instrument constant
  2. B = Strength of magnetic field
  3. V = Average Velocity
  4. D = Pipe diameter


  • No additional pressure loss as there is no protruding parts inside the measuring tube
  • It occurs as an average value over the pipe section as the signal forms in the entire space filled by the magnetic field. As a result, only relatively a short straight run (5 x DN) is required from the electrodes plane upstream of the primary
  • Only the lining of the pipe wall and the electrodes are in contact with the liquid to be measured
  • The primary signal is a voltage that is already an exact linear function of the average flow velocity.
  • The measurement is not dependent on flow profile and other characteristics of the liquid

ELMAG is available in various standard line sizes starting from 10 mm to 1000 mm. We offer various versions to suit applications like:
  • Chemical and process industries
  • Petro-Chemicals & Fertilizers
  • Effluent treatment plants
  • Water and Sewerage Plants
  • Mining and aluminum industries
  • Pharmaceutical & Drug Industries
  • Pulp and Paper Industries
  • Sugar & Steel Industries

ELMAG-IN is the Insertion type Electromagnetic Flow Meter. At pipe line size more than 200mm diameter, insertion type flow meters are used rather than Full-bore type flow meter. ELMAG-IN is a probe assembly which is just inserted into an existing pipe line. In comparison to full-bore type flow meters, the cost is highly reduced.
The ELMAG-ECO is specially designed to provide economical option to ordinary flow-meters. It is very useful for:
  • Fertilizers
  • Agriculture
  • Water-treatment plants
  • Sugar industries
  • Irrigation systems
  • Green house applications

Technical Specifications:

• M.O.C. of Flange : C.S. (std) / SS304 & SS316 (Optional)
• Enclosure M.O.C. : M.S. with cast aluminium IP65 Signal Amplifier Box (SS optional) Size 200 X 120 X 80 mm
• Measuring Pipe M.O.C. : SS304
• Enclosure / painting : IP 65 / Corrosive resistant two component coating (IP 68 optional)
• Cable Entry : 2 off, suitable for 10mm diameter cable
• Test Pressure : 1.5 X Rated Pressure
• Output : 4-20 mA, 500 W load connectable to Rate Indicator /Totaliser Unit
• Accuracy : + 0.5 %


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