The characteristics:

Will be measured and removed from the center of the coil magnet, magnetic flux in theHelmholtz coil changes induced voltage and passed to the flux meter, to obtain the fluxvariation through data processing flux meter.

Tesla and flux meter can measure residual magnetic induction intensity magnets, but whenmeasuring small magnets, with a Holzer probe (Tesla) measurements must be precise removal of the probe and the sample surface distance, or large measurement errors. Using the Helmholtz coil with magnetic fluxmeter effectively solved the problem.

Helmholtz coils can be used to produce a uniform magnetic field, on the other hand, can also be used to open the sample magnetic flux measurement. Will be measured and removed from the center of the coil magnet, magnetic flux in the Helmholtz coil changes induced voltage and passed to the flux meter, to obtain the flux variation through data processing flux meter.