Acoustic thermometer with a single waveguide |
|---|
| Rok Tavčar, Dušan Agrež, Samo Beguš |
- Abstract:
- This paper presents implementation and testing of the acoustical thermometer with a single waveguide. Proposed design has a few specific advantages against other types of acoustic designs with waveguides, such as smaller size, better sensitivity and the same common sound path. The paper describes each advantage and tests used to determine their usefulness. Finally it shows how to deal with disadvantages of this design, such as weak return signals and possible coincidences of the return signals. The instrument was calibrated at ice point and then tested in oil bath from -30 °C to 120 °C. In steady states it has standard deviation of 0.050 °C with 66 independent readings per second. Stability of the bath is 10 mK and uncertainty of the reference thermometer is 0.003 °C.
- Keywords:
- sound, temperature, acoustic, PAT
- Download:
- IMEKO-TC4-2017-047.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- TC4 Symposium 2017
- Title:
22nd IMEKO TC4 Symposium and 20th International Workshop on ADC Modelling and Testing
"Supporting world development through electric&electronic measurements"- Place:
- Iasi, ROMANIA
- Time:
- 14 September 2017 - 15 September 2017