| 摘要 |
PROBLEM TO BE SOLVED: To measure an accurate powder quantity by determining the powder quantity in a container based on the powder density and powder height obtained by aγ-ray detector for measuring the powder density and powder height. SOLUTION: Aγ-ray radiating device 2 is provided outside of a container 1, the intensity of theγ-rays transmitting the powder 3 in the container 1 is measured with a density measuring detector 4 constituted of a scintillation detector, and the powder density is calculated. The powder height is measured with a height detector 5 provided at a position facing theγ-ray radiating device 2 across the upper end face 6 of the powder 3. Since the height measurement is affected by the density change of the powder 3, the density data obtained by the density measuring detector 4 are used, and the accurate powder height is obtained even if the apparent density of the powder 3 is changed according to the stirring level of the powder 3. The powder quantity in the container 1 is obtained by an arithmetic unit 7 based on the powder height and powder density data.
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