Temperature-Compensation Circuits for Simple Solution-Concentration Sensor with Temperature Compensation Using Bulk Acoustic Waves

Kiyoshi Ikeda

Abstract:	This paper describes the use of a temperature-compensation circuits for simple solution-concentration sensor with temperature compensation using bulk acoustic waves. We analyzed the design method of temperature-compensation circuit (TCC) in order to eliminate considerable effect temperature has on sound velocity in liquids. The design methods are derived on a temperature-compensation factor by using a Taylor series expansion of the equation for sound velocity, which is a function of concentration and temperature centered on a reference concentration and reference temperature. The phase-locked loop (PLLM) was applied to NaCl solutions of varying concentrations and shown to yield an accurate determination of concentration within +/-0.024% independent of variations in temperature of +/-1.3'C at approximately 25.0'C.
Published in:	Proceedings of the 37th Annual Precise Time and Time Interval Systems and Applications Meeting August 29 - 31, 2005 Vancouver, Canada
Pages:	84 - 92
Cite this article:	Ikeda, Kiyoshi, "Temperature-Compensation Circuits for Simple Solution-Concentration Sensor with Temperature Compensation Using Bulk Acoustic Waves," Proceedings of the 37th Annual Precise Time and Time Interval Systems and Applications Meeting, Vancouver, Canada, August 2005, pp. 84-92.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In