| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a densitometer capable of being attached without making the generation cause of a stagnation part where a suspended matter is accumulated and fixed and changing the diameter of an existing piping and performing piping construction. SOLUTION: In a densitometer using two light emitting elements 1, 2, two photosensors 3, 4 detecting the lights from the light emitting elements 1, 2 and a piping 5 comprising a material permitting the lights with wavelengths to be measured from the light emitting elements 1, 2 to transmit, two light emitting elements 1, 2 are allowed to approach mutually outside the piping 5 to be arranged in the axial direction of the piping 5 while two photosensors 3, 4 are also allowed to approach mutually to be arranged in the axial direction of the piping 5 and one set of the light emitting element 1 and the photosensor 3 are mutually opposed and one set of the light emitting element 2 and the photosensor 4 are also arranged in mutually opposed relationship.</p> |
