| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin weighing device which allows the quantitative determination of a resin with precision and simple configuration. SOLUTION: A mixed water of a water and a resin whose specific gravity is larger than the water for sedimentation is put on a weighing tank 1, and the resin is weighed while a water layer is separated from a resin layer. Here, a pair of echo type ultrasonic wave sensors wherein the detection signal for the water layer is different from that for the resin layer is provided along vertical direction with a predetermined interval in the weighing tank 1, with the pair of ultrasonic wave sensors constituting sensor group S (S1-S3), the difference in detection signals of the pair of ultrasonic wave sensors of the sensor group S allows detection of a border level between the water layer and the resin layer, and the border level allows weighing of a resin. With this weighing, the border level between the water layer and the resin layer is accurately detected, and an allocation height, for example, of the pair of ultrasonic wave sensors of the sensor group S in the weighing tank 1 is set to a specified value in advance. for quantitatively determining a resin. |
