The purpose of a magnetic characterising system is to determine the magnetic properties of a magnet or magnetic material. This information can be used for testing batches of all magnets in production, quality issues and research purposes.
The principles behind the technologies can be described as:-
The magnetic characteristic is obtained by analysing the applied magnetic field and the sample’s own magnetism.
Although the principles are simple, it is the method of generating the applied field and measuring the magnets “magnetism” that differentiate between the various methods of measurement available, along with the limits to data available and the range each system can operate over.
Magnet characterising technologies include:
Before describing the above technologies in more depth, consideration needs to be given to two important factors in choosing a magnetic characterising technology namely, Open and Closed Magnetic Circuit Effect and Eddy Currents.
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