Development of Quartz Oscillator Based Liquid Concentration Sensor for Contactless Monitoring of Solution in Bottle

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  • Oguro Yu
    Graduate School of Science and Technology, Niigata University
  • Tanimura Miki
    Graduate School of Science and Technology, Niigata University
  • Yada Naoto
    Graduate School of Science and Technology, Niigata University
  • Sohgawa Masayuki
    Graduate School of Science and Technology, Niigata University
  • Abe Takashi
    Graduate School of Science and Technology, Niigata University

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  • 容器内溶液の非接触検査のための水晶発振回路式液体濃度センサの開発
  • ヨウキ ナイ ヨウエキ ノ ヒセッショク ケンサ ノ タメ ノ スイショウ ハッシン カイロシキ エキタイ ノウド センサ ノ カイハツ

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Abstract

<p>In this paper, we developed a quartz oscillator based liquid concentration sensor for contactless monitoring of solution in bottle. This sensor is composed of the sensing capacitor (SC) and quartz crystal resonator (QCR). This sensor has advantages such as high stability and it can measure the frequency dependence on liquid concentration. We succeeded in measuring the hardness of the mineral water and the carbonate aqueous solution in bottle. Because this contactless capacitive sensor is low-priced, we can expect the use for the liquid management of various fields.</p>

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