Abstract
Miniaturized viscosity sensors operating at frequencies in the low KHz-range offer portability and results comparable to existing lab viscometers. In this paper we describe a viscosity measurement cell utilizing electrodynamic-acoustic resonator sensors and provide a modified design with an interchangeable resonator card, which allows for ease of maintenance of the device and provides higher measurement repeatability. Some results obtained with the new resonator cards are presented, which show the clear dependence of the resonance frequency and Q factor on viscosity and on variations in the magnetic circuit. A temperature dependence comparison is made between resonators with straight beam and S shaped (meander) beam suspensions the result of which is the adoption of the S shaped beam design for further investigation. Finally the data processing approach using a curve fitting function designed for low quality factors is briefly described.
| Original language | English |
|---|---|
| Title of host publication | The 13th Mechatronics Forum International Conference Proceedings vol. 2/3 |
| Place of Publication | Linz, Austria |
| Publisher | Trauner Druck GmbH & Co KG |
| Pages | 621 |
| Number of pages | 5 |
| Volume | 2 |
| ISBN (Print) | 978-3-99033-045-6 |
| Publication status | Published - Sept 2012 |
Fields of science
- 203017 Micromechanics
- 202019 High frequency engineering
- 202028 Microelectronics
- 202039 Theoretical electrical engineering
- 202037 Signal processing
- 202027 Mechatronics
- 202036 Sensor systems
JKU Focus areas
- Mechatronics and Information Processing