Use of statistics to determine calibration of instruments
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United States of America Patent
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Apr 23, 2013
Grant Date -
Mar 26, 2009
app pub date -
Sep 19, 2008
filing date -
Sep 20, 2007
priority date (Note) -
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Abstract
The present invention relates generally to statistics and calibration of instruments. More particularly, the invention encompasses the use of statistics to determine calibration of instruments. The present invention is also directed to a remote system for determination of re-calibration of instruments. The present invention also teaches the use of multiple statistical tests to determine need for calibration. The invention also includes a novel use of tests, such as, the F-Test, the Z-Test, to determine need for calibration. Furthermore, this invention relates to an alternate instrument scheme consisting of the use of redundant sensors and statistical analysis to avoid unnecessary calibrations and to detect sensors that are starting to drift before they go out of calibration. With this invention reduced calibration cost, increased data integrity, and reduced off-spec uncertainty is achieved.
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