IN-SITU LIQUID DENSITY MEASUREMENT FOR LIQUID COLUMN MANOMETRY |
|---|
| S. Ehlers |
- Abstract:
- At PTB, an interferometric liquid column manometer for the pressure measurement up to 2 kPa is under development. Its in-situ liquid density measurement is a new approach for those primary pressure standards and makes the use of low-density liquids – low in comparison with the density of mercury, a liquid often used in other standards – possible. Such liquids, here, vacuum oils, offer an excellent sensitivity in length changes against pressure. The liquid density measurement concept is presented, together with the uncertainty estimation.
- Keywords:
- liquid density; liquid column manometer; density standard; hollow sphere; primary pressure standard
- Download:
- IMEKO-TC16-2022-052.pdf
- DOI:
- 10.21014/tc16-2022.052
- Event details
- IMEKO TC:
- TC16
- Event name:
- TC16 Conference 2022
- Title:
6th Conference on Pressure and Vacuum Measurement (together with the 24th TC3 Conference on the Measurement of Force, Mass and Torque, the 14th TC5 Conference on the Measurement of Hardness, and the 5th TC22 Conference on Vibration Measurement)
- Place:
- Cavtat-Dubrovnik, CROATIA
- Time:
- 11 October 2022 - 13 October 2022