Validation of NIS 500 MPa hydraulic pressure measurement

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 interna...

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Bibliographic Details
Published inInternational journal of metrology and quality engineering Vol. 8; p. 3
Main Authors Eltawil, Alaaeldin A., Gelany, Shaker A.
Format Journal Article
LanguageEnglish
Published Les Ulis EDP Sciences 2017
Subjects
Calibration
Cylinders
Equilibrium
Humidity
Hydraulic pressure
Methods
pressure balance
Pressure measurement
pressure sensor
Pressure sensors
Pressure transducers
primary
Sensors
traceability
Uncertainty
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Summary: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.
ISSN:2107-6847
2107-6839
2107-6847
DOI:10.1051/ijmqe/2016031