Issue |
EPJ Web of Conferences
Volume 77, 2014
16th International Congress of Metrology
|
|
---|---|---|
Article Number | 00006 | |
Number of page(s) | 11 | |
DOI | https://doi.org/10.1051/epjconf/20147700006 | |
Published online | 19 August 2014 |
https://doi.org/10.1051/epjconf/20147700006
Recent progress in high pressure metrology in Europe
1 PTB, Braunschweig, Germany
2 CMI, Brno, Czech Republic
3 LNE, Paris, France
a Corresponding author: dprazak@cmi.cz
Published online: 19 August 2014
Five European national metrology institutes in collaboration with a university, a research institute and five industrial companies are working on a joint research project within a framework of the European Metrology Research Programme aimed at development of 1.6 GPa primary and 1.5 GPa transfer pressure standards. Two primary pressure standards were realised as pressure-measuring multipliers, each consisting of a low pressure and a high pressure (HP) piston-cylinder assembly (PCA). A special design of the HP PCAs was developed in which a tungsten carbide cylinder is supported by two thermally shrunk steel sleeves and, additionally, by jacket pressure applied to the outside of the outer sleeve. Stress-strain finite element analysis (FEA) was performed to predict behaviour of the multipliers and a pressure generation system. With FEA, the pressure distortion coefficient was determined, taking into account irregularities of the piston-cylinder gap. Transfer pressure standards up to 1.5 GPa are developed on the basis of modern 1.5 GPa pressure transducers. This project shall solve a discrepancy between the growing needs of the industry demanding precise traceable calibrations of the high pressure transducers and the absence of adequate primary standards for pressures higher than 1 GPa in the European Union today.
© Owned by the authors, published by EDP Sciences, 2014
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