Category Archives: Advanced Testing

Measuring Varnish Potential in Lube Oil

Measuring Varnish Potential in Lube Oil Lubricating oil in gas turbines and hydraulic systems is unfortunately subject to the ravages of varnish. It is well-documented that varnish is an insoluble contaminant comprised of oil degradation by-products and sometimes depleted additive molecules. It is generally caused by some type of thermal (heat-related) stress placed on the…

Calculating Remaining Useful Life The field of Predictive Maintenance (PdM) is providing a strong and growing set of tools, techniques and technologies to optimize operations, maintenance and renewal processes of industrial assets. Condition monitoring techniques, in particular, yield valuable insight into the state of health of industrial equipment, providing clues and hints on expected future…

The Fundamentals of Viscosity The most important single property of a lubricant is its viscosity. It is defined as a measure of a lubricant's resistance to flow. The viscosity of any fluid changes inversely with temperature. As temperature increases, viscosity decreases and as temperature decreases, viscosity increases. The most common way that viscosity is measured…

Varnish: The Elusive Enigma Whether tending to a gas turbine or a large hydraulic system, the mere mention of varnish can cause alarm and an immediate call to action. A number of explanations for the increasing occurrence of lube oil varnish have been postulated. Tighter filtration requirements, higher lube oil flow rates, higher operating temperatures…

Is it time for an annual checkup....On Your Turbine Oil? Most of us know we should see our doctor for an annual checkup, but do we actually do it? If we do have one, do we understand the tests and examinations we are having done? Most of us will answer "no" to at least one…

Category Archives: Advanced Testing

Measuring Varnish Potential in Lube Oil

Calculating Remaining Useful Life

How Important is Oil Viscosity?

Varnish Testing

Turbine Oil Testing

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