MagInspect Magnet Analyzer
the innovative and cost-effective solution for measuring the magnetic quality
of hard magnetic materials such as AlNiCo, ferrite or rare earth materials
Convenient magnetic testing
MagInspect is a cost effective instrument for measuring the hysteresis curve of hard magnetic materials and is close to a permagraph in accuracy.
It is particularly suitable for testing permanent magnetic materials such as AlNiCo / Ferrite / SmCo or Neodymium magnetic materials.
MagInspect can replace a permagraph
MagInspect can replace a permagraph for determining the magnetic properties of materials.
MagInspect is an affordable and easy to use test instrument that can record the magnetization and demagnetization curve using a pulse method.
The control unit and the external pulse probe are equipped with innovative measurement electronics.
A particular advantage is that the geometry of the object to be measured is largely free - when measuring with a permagraph, special magnet geometries are required.
Typical areas of application are
- Material testing and quality control
Determination of the magnetic properties of materials - Research and development
Testing new materials/alloys for magnetic properties - Production control
Monitoring the magnetization of components during production - Documentation
Recording the hysteresis curve in magnet production
Measurement parameters with MagInspect
- Coercivity (I_Hc): magnetic field strength required to reduce the magnetization of a material to zero
- Remanence (Br): Residual magnetization that remains in a material after the external magnetic field has been removed
- Saturation magnetization (Ms): Maximum achievable magnetization of a material
- Hysteresis loop: Curve representing the relationship between magnetic field strength and magnetization
Hysteresis loop
MagInspect measuring method
The pulse measuring probe has a built-in Hall probe with newly developed measuring electronics that can record the measured values of the Hall probe very accurately at up to 10 KHz using a 16-bit A/D converter. At the same time, a magnetizing and demagnetizing point coil is installed to generate the magnetizing and demagnetizing pulses. The control unit generates the individual magnetizing or demagnetizing pulses, while the probe's measurement electronics record the peak magnetic field strength (H value) and the flux value (B value) of the magnetic material.
The entire measurement sequence is automatic, 10-13 pulses are generated for the magnetization and demagnetization processes. The magnetic material can be selected in the control unit in order to use the correct magnetizing and demagnetizing parameters.
Based on the individual H and B values, the controller generates the hysteresis curve in steps, which is shown on the color display. The coercivity I_Hc and the remanence Br are a result of the hysteresis curve.
At the end of the process, the values can be transferred to Microsoft Excel. Microsoft Excel offers the DataStreamer import function, which can transfer data directly from the controller. A mathematical spline function is implemented in an Excel macro that calculates and displays an accurate hysteresis curve.
Processing in Microsoft Excel
Quick method for determining the I_Hc and Br value without hysteresis curve in manual mode
MagInspect also offers the option of a quick method for comparing the Hc values of a material for quality control in mass production.
The quick method can be used to manually trigger a fixed magnetizing and demagnetizing pulse matched to the magnetic material; the I_Hc and Br values are displayed directly on the control unit as a result.
Quick method
A short video about the process of a MagInspect test
Advantages of MagInspect compared to Permagraph
The pulse method achieves very high field strengths to saturate the material with the small probe.
No complex external magnetizing yoke with special pole inserts for different magnet geometries is required.
The pulse method does not require compensation coils to determine the B-value of the magnetic material because each pulse decays completely and no excitation field is present during the B-measurement.
The small pulse probe is largely independent of the geometry of the magnet; for example, external magnets on rotors can be measured.
MagInspect is significantly less expensive than a permagraph.
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Technical Data MagInspect Magnet Analyzer |
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| Measurement parameters: | Automatic measurement of the hysteresis curve of permanent magnets, determination of the remanence Br, coercive field strength I_Hc and maximum energy product |
| Dimensions: | 560 x 210 x 420 (19’ housing) - 19 kg |
| Supply voltage: | 230 V / 50-60 Hz / 16 A |
| Protection class: | IP 20 |
| Probe dimensions: | d=43 x 105 mm |
| Stand dimensions: | 80 x 80 x 80 mm |
| Magnetization field strength: | 50 - 1,800 kA/m |
| Magnetic flux value B: | 0 – 2 T |
| Measuring electronics of the probe: | Digital with 16-bit A/D conversion / up to 10 kHz serial data transmission |
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