In a measuring coil a material sample is exposed to a defined magnetic field and magnetic flux is created in the steel sheet. The electric current required is supplied by a power amplifier. The current is measured by means of a temperature-stable, induction-free precision resistor (shunt) or via field coils.
Determination of the polarization by measurement of the induced voltage, and then conversion and integration by means of a 16-bit processor. Parallel recording of the H and J sizes with separate recording systems guarantees absolutely simultaneous measurement. Faults in measurement caused by phase displacement are thereby ruled out. From the differentiated and integrated parameters the processor system can calculate all the above-mentioned values. There are no sources of faults such as analogue multipliers and integrators.
Measurement is by means of sinusoidal polarization. By using a control algorithm the secondary voltage can be checked and controlled sinusoidally. The nominal voltage is supplied by a highly stable, quartz-controlled digital sinus generator. Amplitude and frequency are set by the processor unit according to the sample data entered (weight, density, desired frequency, nominal polarization etc.).
Determination of the magnetic properties of electrical steel and other soft magnetic materials
Free configuring with specific measuring coil systems
Parallel connection of up to 12 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
Versatile
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