The MA-1040 Magnetic Analyzer utilizes two matched air core coils, one as a reference, and the other receives the sample material to be analyzed. The coils are energized with an AC source of 683 Hz to reject stray 50 or 60 Hz line frequencies, a potential interference source always present in an industrial environment.
Any imbalance in resonance between the two coils resulting from the presence of magnetic material in the sample will produce a signal of strength proportional to the amount of such material. After synchronous detection, the signal is displayed digitally as percent magnetic content.
Operation is simple and straight-forward. A sample, the weight of which has been entered, is lowered into the center of the sample coil. A digital readout immediately displays the results.