Low-cost oil quality sensor based on changes in complex permittivity.

Pérez, A.T. and Hadfield, M., 2011. Low-cost oil quality sensor based on changes in complex permittivity. Sensors (Basel), 11, 10675 - 10690 .

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DOI: 10.3390/s111110675

Abstract

Real time oil quality monitoring techniques help to protect important industry assets, minimize downtime and reduce maintenance costs. The measurement of a lubricant's complex permittivity is an effective indicator of the oil degradation process and it can be useful in condition based maintenance (CBM) to select the most adequate oil replacement maintenance schedules. A discussion of the working principles of an oil quality sensor based on a marginal oscillator to monitor the losses of the dielectric at high frequencies (>1 MHz) is presented. An electronic design procedure is covered which results in a low cost, effective and ruggedized sensor implementation suitable for use in harsh environments.

Item Type:Article
Subjects:UNSPECIFIED
Group:School of Design, Engineering & Computing
ID Code:20527
Deposited By:Unnamed user with email symplectic@symplectic
Deposited On:20 Nov 2012 15:57
Last Modified:20 Nov 2012 15:57

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