Contamination Control of Hydraulic Systems in Industry 4.0

This paper describes the expansion of maintenance in Industry 4.0 concerning contamination control ofa hydraulic systems. Recently, a lot of attention is dedicated towards newly coined term of Industry 4.0, therefore maintenance 4.0, Industrial Internet of Things, Internet of Condition Monitoring, etc. Contamination control as an integral part of Condition Based Maintenance takes a significant part in diagnostics and prognostics of systems containing hydraulic fluids. Hydraulic fluid as a driving medium in hydraulic system suffers from material and energy contamination. The influence is seen through degradationof physical and chemical properties of the hydraulicoil. Recently, in condition monitoring techniques, as a maintenance strategy, a lot of authors emphasize using particle influence as a pre‐warning sign in detecting potential failure. Therefore stakeholders in the industry ((engineers and technicians)follow that claim and consequently implement the strategy therby purchaseand install new sensors and equipment in order to eliminate and mitigate system stoppage or reduction in performance. In this paper, however authors propose a slightly different aproach in trend analysis over particle contamination, and that is, using viscosity change as a pre‐warning sign. Besides, authors advocate techniques and methods needed in adequate contamination control of a system.