Patent ID: 6867861

Claim:
An apparatus for measuring the color properties of a fluid, comprising: a fluid analysis cell having a cavity therein which forms a fluid analysis chamber for measuring light transmittance of a sample to determine color properties thereof; a fluid inlet and outlet channel extending from the cavity in opposite directions to enable fluid to flow into and out of the fluid chamber; a separate fluid delivery system connected to the inlet and outlet channels that draws the fluid sample into and out of the fluid analysis cell; a light transmitting probe and a light receiving probe positioned within said cavity, the probes being juxtaposed from each other across the flow path in a spaced apart relation, each probe having a face terminating in a viewing window which is transparent to visible light and which projects into the fluid chamber in the path of fluid flow, wherein the probes extend within the cavity to allow the flow across the faces of the probes as well as around the faces to provide minimal flow relief for the fluid, and the probes are movable relative to one another to allow for adjustment of the space therebetween which forms the viewing path, and the viewing windows on each probe are disposed in the path of fluid flow to enable intimate contact with the fluid flowing in the cell.