Precise determination of the jacket pressure coefficient of controlled-clearance pressure balances |
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| Hiroaki KAJIKAWA, Tokihiko KOBATA, Kazunori IDE, Akira OOIWA |
- Abstract:
- We are now developing a new controlled-clearance pressure balance to upgrade the hydraulic high-pressure standard up to 1 GPa. Characterization experiments for a 500 MPa controlled-clearance piston-cylinder were performed in detail over wide pressure range, and the effective area was estimated based on the Heydemann-Welch model. The estimation based on the conventional model agrees well with the present pressure standard. However, at high pressures around 500MPa, there appears some contradictions to the assumption of the model; especially, the jacket pressure coefficient depends apparently on the jacket pressure. A possible revision on the model is briefly discussed.
- Keywords:
- controlled-clearance piston-cylinder, Heydemann-Welch model
- Download:
- IMEKO-TC16-2007-073u.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC16
- Event name:
- Cultivating Metrological Knowledge
- Title:
- 3rd Conference on Pressure Measurement (together with 20th TC3 Conference on Measurement of Force, Mass and Torque & 1st TC22 Conference on Vibration Measurement)
- Place:
- Merida, MEXICO
- Time:
- 27 November 2007 - 01 December 2007