6.3.1 Precise viscosity and density sensing in industrial and automotive applications
- 20. GMA/ITG-Fachtagung Sensoren und Messsysteme 2019
2019-06-25 - 2019-06-26
- 6.3 Akustische und resonante Sensoren
- T. Voglhuber-Brunnmaier, A. Niedermayer, F. Feichtinger, B. Jakoby - Johannes Kepler Universität, Linz (Österreich)
- 504 - 510
A resonant sensor based system for measuring viscosity and density is shown and applied to two measurement tasks comprising oil characterization in hydraulic systems and measurement of diesel and soot contamination in engine oil. It is demonstrated that from measuring over varying temperature and pressure, a variety of additional physical properties can me exploited for online condition monitoring. This encompasses also the heat expansion coefficient and the bulk modulus, which are difficult to measure otherwise.