Category: Flow Measurement

Accurate Flow Measurement for Conductive Liquids

Magnetic Flow Meters (Electromagnetic Flow Meters) are among the most reliable and maintenance-free instruments for measuring the flow rate of conductive liquids. At NPK Industries & Co., we supply world-class Magmeters from Krohne Marshall and Schneider Electric, engineered for industrial accuracy, long-term stability, and tough plant conditions.

Electromagnetic Flow Meters operate on Faraday’s Law of Electromagnetic Induction:
➡ When a conductive liquid flows through a magnetic field, it generates a voltage proportional to flow velocity.
This makes it ideal for water, wastewater, chemicals, dairy fluids, beverages, slurries, juices, acids, alkalis and more.

Brand & Models We Offer

Working Principle

Faraday’s Law
 When conductive liquid flows through a magnetic field, voltage is induced:

Flow velocity ↑ → Induced voltage ↑ → Measured flow ↑

Components:

  • Magnetic coil (generates field)
  • Electrodes (sense induced EMF)
  • Liner (PTFE, PFA, Rubber)
  • Body (SS, MS, PU-coated)
  • Transmitter (IFC / IMT series)

Advantages of This Principle:

  • No mechanical wear
  • No clogging
  • Accurate even with slurries
  • Handles dirty water

Technical Specification Table

 

Parameter

Range

Accuracy

±0.2% to ±0.5%

Conductivity requirement

> 5 μS/cm

Size Range

DN15–DN600

Temperature

Up to 180°C

Pressure

PN10 to PN40

Output

4–20mA / Pulse / HART