Ultrasonic Resin Level Detector PDF Download

Two ultrasonic instruments having the same principle of operation were evaluated as detectors for the mud level in a thickener and the resin in an ion-exchange column. The Hecta echo sounder, a ship's echo sounder that had been converted by the factory to have a range between 0,4 and 3 m, operated well for detection of the mud level in a thickener but was unable to operate in a resin column. The Wesmar interface detector, which was specifically designed for mine installations, operated well in the thickener and in a resin column. An optical probe was constructed for calibration in a thickener, but was not used in the resin column because there were grids inside the column that, at certain times, were exposed when the level of the resin fell, and hence these were used for calibration.