FIELD: electronics.
SUBSTANCE: device has constant magnets system of constant polarity along whole width of technological product flow, magnetized at 45°-90° angle to symmetry plane of magnetic system. Measuring coils envelope magnets poles and are connected to electronic estimation blocks. Symmetric portions of magnetic system are directed to each other by poles of same name. Measuring coils are placed at outer surface of constant magnets, directed to space for movement of technological product, enveloping one common pole for all magnets. Magnets may be made in form of rectangular rods, geometrical axis of which coincides with magnetization axis.
EFFECT: higher interference resistance and higher sensitivity.
2 cl, 5 dwg
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