G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 27/27 (2006.01) G01N 27/409 (2006.01) G01N 27/48 (2006.01) G01N 33/28 (2006.01)
Patent
CA 2045053
A method and apparatus is disclosed for the complete analysis of used oils, lubricants, and fluids. The method can monitor antioxidant depletion, oxidation initiators buildup, product buildup, or liquid contamination or combinations thereof. The method can be performed either on-line or off-line but is preferably an on-line system, either a built-in system or a dip-stick type system, having a working microelectrode, a reference electrode, and an auxiliary electrode. A sample is contacted by the electrodes and subjected to cyclic voltammetric analysis, whereby a varying electric current is produced within the sample. The current is measured and recorded, and the conductance is measured. The remaining useful life of the oil, lubricant, or fluid is then determined from the wave heights of the oxidation and reduction peaks, and the contamination is determined from the conductance.
Gowling Lafleur Henderson Llp
University Of Dayton
LandOfFree
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