Measuring and testing – Liquid analysis or analysis of the suspension of solids in a...
Patent
1996-08-30
1999-03-30
Larkin, Daniel S.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
73 5305, 73 5307, 73 6142, 73 6171, 324693, 324698, G01N 2702, G01N 3326
Patent
active
058892001
ABSTRACT:
The present invention relates to a method and apparatus which can be used to detect the abnormal operating condition of equipment, such as engines and machinery, the usefulness of the fluid, and the content of wear metals and elemental constituents in the fluid. The method comprises the steps of bringing at least two electrodes into contact with a sample of a fluid to be analyzed; applying a square voltage wave form to the electrodes at a predetermined scan range and scan rate to cause a current to flow between the electrodes; monitoring the current at the electrodes to determine a current output signal; using the current output signal to measure the conductivity of the fluid; and analyzing the sample to determine a content of wear metals and elemental constituents in the sample.
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Centers Phillip W.
Saba Costandy S.
Wolf James D.
Larkin Daniel S.
The University of Dayton
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