ESTABLISHMENT OF THAILAND PRESSURE STANDARD FROM 1.5 kPa TO 500 Mpa |
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| P. Wongthep, L. Sainoo |
- Abstract:
- This paper describes the method used to characterize the zero-pressure effective area (A0) and pressure distortion coefficient (λ) of 200MPa-CCPG oil piston-cylinder unit (PCU) in order to realize the national pressure scale from 1.5 kPa to 500 MPa. The A0 was determined by cross-floating method from a set of primary gas pressure standard, while the H-W method was used for calculating λ. A set of three oil PCUs was maintained as a primary pressure standard and used for scaling up and down pressure to determine λ for the other PCUs. The relative standard uncertainty of 200MPa-CCPG pressure standard is 3.0 · 10-5.
- Keywords:
- zero-effective area; pressure distortion coefficient; primary standard
- Download:
- IMEKO-TC16-2022-007.pdf
- DOI:
- 10.21014/tc16-2022.007
- 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