| 摘要 |
PURPOSE:To measure both loosened and tightened apparent densities and to obtain quickly a stable measured value without person's help by providing means for filling loosely and tightly a sample into a vessel, a means for weighing the weight of the sample in the vessel and a means for calculating and displaying both apparent densities of the sample. CONSTITUTION:The sample supplied from a chute 6 falls uniformly into the vessel 7 and is packed therein. The vessel 7 is carried on an electron balance 5 by whirling a whirling arm 4, and mounted on a weighing base 5a. Thus, a weight value weighed by the balance 5 is inputted specially as an electric signal into a microcomputer 9, calculated instantaneously by the weight and inner volume of only the vessel 7 previously stored and inputted, and the result is displayed as the loosened apparent density of the sample. On the other hand, rising and dropping of a mounting base 27 are performed by arbitrary prescribed number of times while supplying the sample into the vessel 7 to apply an impact due to the dropping to the vessel 7, and the sample is tightly packed in the vessel 7. Thereafter, the tightened apparent density due to the tightly packing is measured by the process similar to above-described one. |
