What is main function electromagnetic flow meter?

Electromagnetic flowmeters use Faraday’s Law to determine the flow of liquid in a pipe. Whereby, the flow of a conductive liquid through the magnetic field causes a voltage signal to be sensed by electrodes located on the flow tube walls. The voltage generated is proportional to the movement of the flowing liquid.

What is electromagnetic blood flow meter?

Electromagnetic blood flowmeters and flow probes are used to measure blood flow in blood vessels throughout the circulatory system. The principle of this measuring device is based on laws of electromagnetic induction discovered in the 19th century.

Who invented the electromagnetic flow meter?

In 1952 the Dutch company Tobi-Meter introduced the first commercial magmeter. In 1962 the British scientist J.A. Shercliff published the “Theory of electromagnetic flow-measurement.” Today there are a few dominant global companies providing more than 200,000 magmeter instruments annually to all industries.

How is electromagnetic flow meter used?

Magnetic flow meters works based on Faraday’s Law of Electromagnetic Induction. 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.

What are the advantages of electromagnetic flow meter?

The electromagnetic flow meter provides rapid response to flow changes. It provides linear wide range. Measuring range setting can be optimized. It has ability to measure reverse flow.

What are the demerits of electromagnetic blood flow meter?

It is not suitable for low velocity. It is more expensive. It is suitable for fluids having conductivity greater than 20 micro ohm/cm. Gas inclusion cause errors.

What is the principle on which an electromagnetic blood flow transducer is based What is the limitation of this method for measuring blood flow?

Electromagnetic blood flow meters are based on the principle of electromagnetic induction. According to Fleming’s right hand rule, the EMF induced in the conductor under the influence of magnetic field is directly proportional to the velocity of motion of conductor.

What are the advantages and disadvantages of magnetic flow meter?

It can only measure the liquid flow of conductive medium, and can not measure the flow of non-conductive medium, such as gas and water for better heat treatment. In addition, the lining needs to be considered under high temperature conditions.

Which of the following is applicable for the electromagnetic flow meter?

5. Which of the following is applicable for the electromagnetic flow meter? Explanation: Electromagnetic flow meters don’t cause obstruction to flow and can be used for measurement in slurries. 6.

What are the limitations of electromagnetic flow meter?

(1) The application of electromagnetic flow meter has certain limitations. It can only measure the liquid flow of conductive medium, and can not measure the flow of non-conductive medium, such as gas and water for better heat treatment. In addition, the lining needs to be considered under high temperature conditions.

What is the limitation of the magnetic flow meter?

Magnetic flow meters are restricted to liquids where conductivity is at sufficient levels to induce a measurable voltage. Unable to measure the flow of Hydrocarbons due to their low conductivity. Typically require a pipe full of flowing fluid. Magnetic flowmeters can not be used to measure gas flows.