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United States of America Patent
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Issued Date -
Dec 24, 2015
app pub date -
Jun 9, 2015
filing date -
Jun 20, 2014
priority date (Note) -
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Abstract
A sensor assembly for indicating the location of a leadscrew relative to a probe tube, the leadscrew forming part of a nuclear control rod and the probe tube being moveably connected to the leadscrew. The sensor assembly including a primary electromagnetic coil arranged to generate a time varying magnetic field; and a secondary electromagnetic coil arranged to detect the time varying magnetic field as affected, directly or indirectly, by the leadscrew moving relative to the probe tube and to output, on the basis of the detected time varying magnetic field, a signal indicative of the location of the leadscrew relative to the probe tube. The primary electromagnetic coil and the secondary electromagnetic coil comprising copper and nickel.
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