X-ray analysis apparatus with detector window protection feature
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United States of America Patent
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Nov 3, 2015
Grant Date -
Jan 24, 2013
app pub date -
Jul 17, 2012
filing date -
Jul 19, 2011
priority date (Note) -
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Abstract
An X-ray fluorescence (XRF) instrument comprises a hand-held device housing which holds a radiation emitter configured to emit radiation directed at a test object and a radiation detector housed inside a chamber closed by a sealing window and configured to detect radiation of the test object, caused by the test object being exposed to the emitted radiation. A protective cover mechanism is affixed to the testing device and is configured to have a closed position which covers or blocks access to the sealing window to protect it from being broken or damaged by debris or other obstructions, and an open position which exposes the sealing window to allow the un-obstructed passage of radiation therethrough. The cover mechanism can be implemented variously, including by a pivotally mounted cover plate, an iris mechanism, a fan-like cover and the like. Debris can be detected variously, including by strain sensors, optical detectors and proximity sensors.
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