Transducer calibration system: apparatus and method
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United States of America Patent
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Nov 30, 2004
Grant Date -
Mar 18, 2004
app pub date -
Sep 12, 2002
filing date -
Sep 12, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A transducer calibration apparatus and method for transforming both previously established transducer parameters for a transducer calibrated to a first target object material and measured transducer parameters for the transducer monitoring a second different target object material into a calibration parameter and transforming the output of the transducer and thus, the use of the transducer, from the first target object material used to calibrate the transducer to the second different target object material being subsequently monitored by the transducer by linearizing the output of the transducer into gap values as a function of the calculated calibration parameter and then, generating alarms based on the linearized output of the transducer exceeding established limits and using the alarms to automatically shut down a machine being monitored by the transducer and/or automatically annunciate machine problems to personnel.
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