MEASUREMENT INSTRUMENT FOR MEASURING INTERNAL QUALITY OF PARTICULATE MATERIAL

PROBLEM TO BE SOLVED: To provide a measurement instrument for measuring internal quality of a particulate material, capable of properly measuring the internal quality of the particulate material, moreover, lowering the running cost and suppressing damages to the particulate material.SOLUTION: In the measurement instrument for measuring internal quality of the particulate material, a light projecting means 1 for projecting measurement light in the direction of traversing a loading location P and a light-receiving means 2 for receiving the light from the loading location P are distributed on both sides of the loading location P to be arranged, with respect to the loading location P loaded with a particulate material housing container U constituted so as to permit a light to be transmitted transversely; the loading location P is constituted so as to freely pass light along the light projection means 1, in the arranging direction and the light-receiving means 2 and the particulate material housing container U is constituted so as to be freely load at the loading location P, in a state such that light is transmitted along the light projection means 1 in the arranging direction and the light-receiving means 2; and the light-receiving end part 2A of the light-receiving means 2 is arranged, in a state of approaching the particulate material housing container U which is allowed to be loaded at the loading location P.