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.
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.
Magnetic flow meters works based on faraday s law of electromagnetic induction.
The physical principle at work is electromagnetic induction and mathematically defined as e k b d v.
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.
These meters are also called as magflow or electromagnetic flow meters.
Magnetic flowmeters can measure properly when the electrical conductivity of the liquid is greater than approximately 5μs cm.
Principle of magnetic flow meter based on faraday s law.
The induced voltage e is directly proportional to the velocity v of the fluid moving through the magnetic field b.
What is the working principle of magnetic flow meter.
The physical principle at work is electromagnetic induction.
The induced voltage is carried to the transmitter through the electrode circuit.