In a measuring coil a material sample is exposed to a defined magnetic field and magnetic flux is created in the sheet steel. The required electric current is supplied by a power amplifier. The current is measured by means of a temperature-stable, low inductivity precision resistor (shunt) or via field coils.
Determination of the polarization is by sampling of the induced voltage, conversion and integration. Parallel recording of the H and J sizes with separate analogue-digital converters guarantees absolutely simultaneous measurement. From the differentiated and integrated parameters the processor system can calculate all the above-mentioned values.
Measurement is by means of sinusoidal polarization. By using a control algorithm the secondary voltage can be checked and constantly regulated in accordance with the nominal value. Optionally excitation on the primary side is possible with free curves or PWM signals. The nominal voltage is supplied by a highly stable, digital frequency generator. Amplitude and frequency are set by software according to the sample data entered and the default values. Operation, measurements and evaluation are via the MPG Expert Software which enables completely free parametrization and combination of the measuring processes. MPG Expert runs on Windows XP and higher.
Determination of the magnetic properties of electrical steel and other soft magnetic materials
Free configuring with specific measuring coil systems
Parallel connection of up to12 measuring coil systems
Fully digitalized data documentation
Measuring coil systems and evaluation according to IEC 69404 ff and ISO ASTM for measurement with Epstein frame and sheet measuring coil
Very fast measurements
Easy to operate
Automatic coil changeover for convenient operation
Module for measurement of rings, ring strip cores, stacked laminations, etc.
BROCKHAUS® MPG Expert software for measurement, presentation and integration into QM systems