Development of the Suspended Sediment Concentration Measuring System by Differential Pressure Measurement

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  • 差圧測定による浮遊砂濃度計測システムの開発
  • サアツ ソクテイ ニ ヨル フユウ サ ノウド ケイソク システム ノ カイハツ

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In general, both continuous turbidity measuring and bottle sampling are used for suspendedsediment concentration measurement in rivers or reservoirs. However, turbidimeters by using an optical method have a subject in long-term stability and high turbidity measurement. As for bottle sampling, it takes a great deal of time and is very difficult to collect samples at the flood peak where short runoff catchments. Here, we have developed a new suspended sediment concentration measuring system by differential pressure measurement. This method has advantages in long-term and high turbidity measurement because differential pressure transducer is measuring density of water directly. Both laboratory and field experiments using prototype-measuring system have revealed this measurement method has sufficient accuracy and reliability.

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