Magnetics Instrumentation
Gaussmeters are used to measure magnetic flux density. Most Gaussmeters use a Hall probe to measure magnetic flux density.
Gaussmeters provide a static measurement. The probe is placed in the desired measuring location and the Gaussmeter measures the flux density at that point. A Gaussmeter is capable of measuring dynamic fields but it is not a requirement of the measurement process to have a changing magnetic field or movement of probe with respect to the field(as it is for a Fluxmeter).
Gaussmeters are excellent for measuring the flux density of air gaps in loudspeakers, motors etc. In these regions the flux density is uniform so probe position is less important. Gaussmeters are also excellent at determining local point effects as they have a very small detection area on the probe.
Gaussmeters are used to measure magnetic flux density. Most Gaussmeters use a Hall probe to measure magnetic flux density.
Gaussmeters provide a static measurement. The probe is placed in the desired measuring location and the Gaussmeter measures the flux density at that point. A Gaussmeter is capable of measuring dynamic fields but it is not a requirement of the measurement process to have a changing magnetic field or movement of probe with respect to the field(as it is for a Fluxmeter).
Gaussmeters are excellent for measuring the flux density of air gaps in loudspeakers, motors etc. In these regions the flux density is uniform so probe position is less important. Gaussmeters are also excellent at determining local point effects as they have a very small detection area on the probe.
Fluxmeters:
Integrating Fluxmeters are used to measure total magnetic flux with a coil.
Fluxmeters are often used when a total flux reading of a magnet is required and unlike Gaussmeters, they need a changing magnetic field to allow measurement.
Examples of when to use a fluxmeter include:
- To check a magnetization process:
A sense coil is embedded into a magnetizing fixture. The system magnetizes the sample and as it is removed from the fixture an Integrating Fluxmeter measures the sample’s total magnetization and determines if it is within acceptable production tolerances.
- To determine total flux, with Helmholtz coils:
A pair of Helmholtz coils is connected to an Integrating Fluxmeter. The sample to be tested is placed within the pair of coils and rotated. The Integrating Fluxmeter determines the total magnetization of the sample.
They are good for flux
It's a delta
Magnetizers:
A magnetizer can be used to magnetize material. Most pulse magetizing systems can be used to calibrate and demagnetize anisotropic and isotropic magnet materials of varied sizes. Especially all high-coercivity magnet materials such as Sm2Co17 or NdFeB magnets can easily be magnetized within a short cycle time. A typical system consists of a power supply, capacitors and coils controlled by a computer. The system charges the capacitors to a high voltage and discharges quickly to create a field pulse.
Conditioners are used to reduce the material magnetization to a desired level.
Degauss coils can be used to reduce the magnetization of apparatus.
Integrating Fluxmeters are used to measure total magnetic flux with a coil.
Fluxmeters are often used when a total flux reading of a magnet is required and unlike Gaussmeters, they need a changing magnetic field to allow measurement.
Examples of when to use a fluxmeter include:
- To check a magnetization process:
A sense coil is embedded into a magnetizing fixture. The system magnetizes the sample and as it is removed from the fixture an Integrating Fluxmeter measures the sample’s total magnetization and determines if it is within acceptable production tolerances.
- To determine total flux, with Helmholtz coils:
A pair of Helmholtz coils is connected to an Integrating Fluxmeter. The sample to be tested is placed within the pair of coils and rotated. The Integrating Fluxmeter determines the total magnetization of the sample.
They are good for flux
It's a delta
Magnetizers:
A magnetizer can be used to magnetize material. Most pulse magetizing systems can be used to calibrate and demagnetize anisotropic and isotropic magnet materials of varied sizes. Especially all high-coercivity magnet materials such as Sm2Co17 or NdFeB magnets can easily be magnetized within a short cycle time. A typical system consists of a power supply, capacitors and coils controlled by a computer. The system charges the capacitors to a high voltage and discharges quickly to create a field pulse.
Conditioners are used to reduce the material magnetization to a desired level.
Degauss coils can be used to reduce the magnetization of apparatus.