Magnetic Flow Meter Working Principle

What is the working principle of magnetic flow meter.

Magnetic flow meter working principle.

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. According to this principle when a conductive medium passes through a magnetic field b a voltage e is generated which is proportional to the velocity v of the medium the density of the magnetic field and the length of the conductor. Principle of magnetic flow meter based on faraday s law. These meters are also called as magflow or electromagnetic flow meters.

The physical principle at work is electromagnetic induction and mathematically defined as e k b d v. Be careful because using magnetic flowmeters on fluids with low conductivity such as deionized water boiler feed water or hydrocarbons can cause the flowmeter to turn off and measure zero flow. The flow principle behind magnetic flow meters is known as faraday s law mathematically defined as e k b d v. The induced voltage e is directly proportional to the velocity v of the fluid moving through the magnetic field b.

Magnetic flow meters works based on faraday s law of electromagnetic induction. Magnetic flowmeters can measure properly when the electrical conductivity of the liquid is greater than approximately 5μs cm. The induced voltage is carried to the transmitter through the electrode circuit.