Magnetic Flow Meter

magnetic flow meter


What is Magnetic Flow Meter?

Magnetic flow meter, also technically an electromagnetic flow meter or more commonly just called a mag meter, is one of most common flow meters which follows the Faraday law of electromagnetic induction. A magnetic field is applied to the metering tube, which results in a potential difference proportional to the flow velocity perpendicular to the flux lines. The physical principle at work is electromagnetic induction. The magnetic flow meter requires a conducting fluid, for example, water that contains ions, and an electrical insulating pipe surface, for example, a rubber-lined steel tube.

Magnetic flow meters are made up of sensor, transducer, LCD screen, current and pulse output, alarm signal etc. They are widely used to accurately measure the flow rate of liquids which are electrical conducting throughout industries of petroleum, chemical engineering, pharmacology, papermaking, electric power, environmental protection and so forth.


Features of Magnetic Flow Meter

  • The stability of flux measurement has been improved
  • Electrode structure with high reliability
  • Excellent choice for low pressure systems with minimal pressure losing
  • Corrosion protection, abrasion resistant
  • High accuracy, stable performance and wide measuring dimensions
  • High level of anti-vibration and anti-jamming
  • Virtually maintenance free as no moving parts or obstructions in the fluid stream
  • Lining and built-in grounding electrode are both applicable
  • EEPROM protects the set parameters and accumulated values in case of power failure
  • High-definition LCD Backlight Display


Technical Specifications of Magnetic Flow Meter

Measuring fluid

conductive fluid



Electrode materials

Mo2Ti  HC  HB  Pt  Ta  Ti

Lining Material

PTFE, PFA (resistance to negative pressure), chloroprene rubber, polyurethane, hard rubber (optional conductive ground rubber ≥ DN125)

Electrode Type

Standard type, scraper-type (DN ≥ 50)

Dielectric conductivity

> 5μs/cm (water> 20μs/cm)

Accuracy grade






Maximum temperature of medium

A size ≤ 90, min size ≤ 180 (rubber ≤ 65 )



Working pressure

1.0Mpa-4.0Mpa, the special supplier overpressure

Protection Level

IP65, IP67, IP68 (optional)


4-20mA current output ,0-1kHz frequency output, pulse output per unit volume


220VAC, 110VAC



Auxiliary converter



National standard GB9115, ANSI, JIS

Installation Type

Integrated, split


Applications of Magnetic Flow Meter

  • Water Treatment
  • Pump Testing
  • Paper & Pulp
  • Effluent Treatment Plants
  • Waste Water & Sewerage
  • Food & Diary Processing
  • Chemical Process Plants