Magnetic Helmholtz coil DXT series

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Helmholtz coils are used to produce a uniform magnetic field, and vice versa, they can also be used for open-circuit sample flux measurements. The magnet under test is removed from the center of the coil. The magnetic flux in the Helmholtz coil changes the induced voltage and is transmitted to the fluxmeter. The fluxmeter obtains the flux variation through data processing. Both the Teslameter and the fluxmeter can measure the residual magnetic induction of the magnet, but when measuring a small magnet, measuring with a Hall probe (Teslameter) must accurately remove the distance between the probe and the sample surface, otherwise, the measurement error is large.