Device for measuring contamination of lubricant

Details Device for measuring contamination of lubricant Device for measuring contamination of lubricant

1985-04-19

1987-10-13

LaRoche, Eugene R.

Optics: measuring and testing

Oil testing

356436, G01N 3328

Patent

active

046995099

ABSTRACT:
In a lubricant contamination measuring device, an optical path gap is provided between a light source window at a light source side and a light receiving window at a light receiving element side. A lubricant having an amount of contaminant to be measured in accordance with a light transmittance is present in the optical path gap and the length of the optical path gap is selected to be shorter than a predetermined length. At least one of the light source and light receiving windows has a convex shape, and the center of the convex window is in contact with a surface of the other window. Thus, the amount of contaminant in the lubricant can be measured up to a high contamination range.

REFERENCES:
patent: 1746616 (1930-02-01), Sounitza
patent: 4003661 (1977-01-01), Yamano
patent: 4497200 (1985-02-01), Tournier

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