Quartz pressure and temperature transducer assembly with dynamic correction
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United States of America Patent
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Dec 16, 2014
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app pub date -
Nov 30, 2010
filing date -
Dec 4, 2009
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Abstract
A quartz transducer having four or more crystal-controlled oscillators intended for measurement of applied pressure and temperature. All four oscillators are controlled by crystal quartz resonators operating in the thickness-shear mode. Two crystals measure the pressure and temperature respectively. A third crystal is a reference, and the fourth crystal may be another reference crystal or a second temperature crystal. The output of the latter is either phase leading or phase lagging the thermal response of the main temperature sensor.
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