Light transmission type powder and granular material measuring apparatus

摘要

The present invention relates to a light transmission type powder and granular measuring apparatus, comprising: two pieces of piping connected in such a manner to branch a powder and granular material (P) flowing line into two directions at a divergence point (A) and to join again at the confluence point (B), a valve (6a, 6b) which is installed at the divergence point (A) and can be changed over to allow the powder and granular material (P) to selectively flow in either one of the piping, and a light transmission type cell (7) mounted to the midway of at least either one of the piping. Both the condition in which the powder and granular material (P) is allowed to flow in the cell (7) and the condition in which the powder and granular material (P) is not allowed to flow in the cell (7) can be measured by changing over the valve (6a, 6b) without stopping the flow of the powder and granular material (P).