A capacitance-based displacement transducer consisting of three concentric cylinders is introduced and analyzed. The design eliminates measurable humidity effects and reduces temperature effects to below 10 p.p.m./ degrees C over the temperature range of 20 degrees C to 60 degrees C. Electric noise considerations lead to a design of a 0.5-in-span (12-mm) transducer with 0.01% accuracy.>
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Bertone et al. (1990) studied this question.
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