QUARTZ PRESSURE AND TEMPERATURE TRANSDUCER ASSEMBLY WITH DYNAMIC CORRECTION

摘要

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 may be another reference 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.