RAW MATERIAL FLUID DENSITY DETECTOR

摘要

The present invention makes the density meter structure used in organic raw material fluid supply systems, and the like, simpler, more compact, and less expensive and provides a density meter that makes it possible to stably measure density while maintaining a constant light transmission window transparency and enhances airtightness and resistance to particles. The present invention is an optical-analysis-type raw material fluid density detector comprising a detector main body (2) and a light oscillation unit and a light detection unit that are provided on an upper surface or a lower surface of the detector main body (2), wherein the detector main body has at least one recess formed on the upper surface and on the lower surface, a fluid flow path connecting a fluid inlet of the detector main body to a recess, a fluid flow path connecting the recesses to each other, and a fluid flow path connecting a recess to a fluid outlet of the detector main body; the light oscillation unit is disposed in the recess that is closest to the inlet; and light detection units are disposed in the remaining recesses.