浮遊砂に関する研究(2) ―濃度の光学的測定法―

Abstract

In this paper, a theoretical consideration for measurement of the suspended sediment con-centration was conducted on the basis of the optical principal. It was clarified from this considera-tion that suspended sediment concentration can be measured with the optical method if wemeasure the average diameter and the standard deviation of the suspended sediment, and therectilinear attenuance.The probe of an instrument for measurement of the suspended sediment concentration consistsof the Gallium Arsenide Diode as the light source and the Phototransistor as the sensor. Theconcentration of the suspended mater consisted of uniform and monuniform sediment wasmeasured with this instrument, and the result was compared with a thoretical epuation derived byauthors.