Sensor for sensing the wall thickness of an object
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United States of America Patent
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Jun 9, 1992
Issued Date -
N/A
app pub date -
Feb 6, 1991
filing date -
Dec 26, 1989
priority date (Note) -
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Abstract
A capacitive sensor senses the wall thickness of an object. The sensor has an electrode covered by an adhesive tape including a non-transparent glass cloth tape layer which engages the object and a layer of silicon or acrylic adhesive for securing the tape layer to the electrode. The adhesive and tape have a dielectric constant that is constant throughout the temperature range in which the sensor is to operate.
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