Method of matching sensors in a multi-probe turbine blade vibration monitor
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United States of America Patent
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Aug 2, 2011
Grant Date -
Mar 26, 2009
app pub date -
Oct 25, 2007
filing date -
Sep 21, 2007
priority date (Note) -
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Abstract
A method of matching sensors in a multi-probe blade vibration monitor for a turbine. The method includes providing at least two probes mounted in a casing of the turbine adjacent to a rotating blade structure of the turbine. Targets are provided on radially outer portions of the blade structure. Each of the probes includes a sensor generating signals corresponding to target passing events, and a set of synchronous harmonics of the rotational speed of the rotor are produced for each sensor. The position of the sensors is adjusted such that the sets of harmonics of the sensors are substantially matched, indicating that the positions of the sensors are matched.
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