Optical particulate sensor in oil quality detection

Details Optical particulate sensor in oil quality detection Optical particulate sensor in oil quality detection

2008-01-22

2008-01-22

Porta, David (Department: 2884)

Radiant energy

Methods of determining oil presence, contamination or...

Reexamination Certificate

active

11234606

ABSTRACT:
An oil quality sensor apparatus includes a housing that includes an oil flow path through which oil flows through the housing. One or more photo-detectors can be provided in association and a plurality of light-emitting devices located within the housing and proximate to the oil flow path. At least one light-emitting device among the plurality of light-emitting devices is sensitive to large particulates associated with the oil and at least one other light-emitting device among the plurality of light-emitting devices is sensitive to small particulates associated with the oil to thereby provide an indication of differences among particulates associated with the oil.

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