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LOVREC, D., TIČ, V.
The Importance of Hydraulic Oil Real-Condition Identification as a Basis for Strategical Desicion-Making
KOMUNALNA ENERGETIKA / POWER ENGINERING, 127
Conventional mineral-based hydraulic oils and turbine oils used within energy plants and machines have different long service-lives. This depends on variety of different factors: by proper maintenance, monitoring activities and strategies, and by careful selection of oil-type. Aging mechanism of hydraulic oils and the fact why they need to be replaced are well-known to the user, but lesser-known is the fact that there are great differences in the durability of hydraulic oils when exposed to machine-operating conditions. Any extensions in the service-lifetimes of hydraulic or turbine oils can deliver both, cost savings and environmental benefits, but requires the knowledge of real oil-condition. In order to evaluate the service-life of oil, this paper proposes a novel method appropriate for on-line condition monitoring and testing the durability and oxidation stabilities of different hydraulic oils. The test results can be used for selecting the more adequate oil with a long service-lifetime.

TIČ, V., LOVREC, D.
Challenges of on-Line Condition Monitoring of Hydraulic Oils
KOMUNALNA ENERGETIKA / POWER ENGINERING, 137
Ensuring adequate quality of hydraulic oil and planning its change is crucial for a stable and smooth operation of many industrial machines. The best reliability can certainly be provided by using continuous monitoring of hydraulic oils, which is usually carried out remotely by means of modern online sensors. Nevertheless, the development and implementation of such a system represents a unique challenge, since the measurement of the oil condition is much more complicated than measuring usual operating parameters, such as pressure or temperature.

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