Int. J. Metrol. Qual. Eng.
Volume 8, 2017
|Number of page(s)||6|
|Published online||06 February 2017|
Validation of NIS 500 MPa hydraulic pressure measurement
Mass, Density and Pressure Department, National Institute for Standards (NIS),
⁎ Corresponding author: email@example.com
Accepted: 31 December 2016
500 MPa pressure is considered as the common maximum pressure in most of the National Metrology Institutes worldwide; however, validation of the uncertainty in that range required a lot of work. NIS when recognized on, 2008 guaranteed big uncertainty value above 200 MPa due to the absence of international comparison at that time. This paper summarizes the results of a validation of 500 MPa range of hydraulic gauge pressure measurements carried out at NIS. The study covers the calibration through direct comparison and through using of a pressure sensor. The paper summarized the technical work carried out at the results of measurements and the effect of these results on NIS Calibration Measurements Capability. The validation also includes the comparison between the obtained results and pervious calibration of the same piston-cylinder assembly that calibrated against the NIST primary standard.
Key words: pressure sensor / calibration / pressure balance / uncertainty / primary / traceability
© A.A. Eltawil and S.A. Gelany, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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