Electrostatic charge measurement in hydraulic circuits

Michael Kuehnlein
RWTH Aachen University, Institute for Fluid Power Drives and Controls (IFAS), Aachen, Germany

T. Wendel
RWTH Aachen University, Institute for Fluid Power Drives and Controls (IFAS), Aachen, Germany

H. Murrenhoff
RWTH Aachen University, Institute for Fluid Power Drives and Controls (IFAS), Aachen, Germany

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp1392a27

Ingår i: 13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden

Linköping Electronic Conference Proceedings 92:27, s. 273-283

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Publicerad: 2013-09-09

ISBN: 978-91-7519-572-8

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


Electrostatic charging of hydraulic circuits is recently becoming an issue as low conduction hydraulic fluids are in use increasingly. Charge generated by friction is therefore more likely to accumulate and build up large voltages. These high charge accumulations are hazardous as they can damage system components such as filters; which can eventually lead to system failure. In order to develop appropriate counter measures; a precise knowledge of influencing parameters is strongly beneficial. In this paper a test rig is presented which allows a detailed investigation of influencing parameters. In contrast to other works on the subject the new test rig and the chosen charge measurement principle with specifically designed charge measurement chamber allow the collection of quantifiable data. This major improvement lays the basis for a model to predict the charging tendency of a hydraulic system


Electrostatic charging; electro-chemical double layer; charging of hydraulic fluids; flow through filters; charge measurement


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