Water weight sensor array imbedded in a sheetmaking machine roll
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United States of America Patent
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Jan 29, 2002
Issued Date -
N/A
app pub date -
Apr 6, 1998
filing date -
Dec 13, 1996
priority date (Note) -
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Abstract
A sensor imbedded roller for detecting changes in properties of a material and a measurement apparatus including a fixed impedance element coupled in series with a variable impedance sensor imbedded roller between an input signal and a reference potential (e.g. ground) is described. The sensor, which includes an electrode configuration, is imbedded into a roller such that when it rotates it comes in contact with the material being measured and its impedance varies. The variable impedance of the sensor relates to changes in property of the material being sensed which can then be related to changes in other physical characteristics of the material such as weight, chemical composition, and temperature. Sensor imbedded rollers can be placed in a sheetmaking machine to measure the pre-formed and post-formed paper product.
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