An Approach to Synchronise Effective Areas of Pressure Balances

A method to synchronise effective areas of pressure balances is presented. By this method, the effective areas of piston-cylinder assemblies (PCAs) with their uncertainties determined from dimensional characteristics of the piston and the cylinder or from a calibration against reference pressure sta...

Full description

Saved in:
Bibliographic Details
Published in:MĀPAN : journal of Metrology Society of India 2015-03, Vol.30 (1), p.7-13
Main Authors: Sabuga, W., Priruenrom, T.
Format: Article
Language:English
Subjects:
Mathematical and Computational Physics
Mathematical Methods in Physics
Measurement Science and Instrumentation
Numerical and Computational Physics
Original Paper
Physics
Physics and Astronomy
Simulation
Theoretical
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A method to synchronise effective areas of pressure balances is presented. By this method, the effective areas of piston-cylinder assemblies (PCAs) with their uncertainties determined from dimensional characteristics of the piston and the cylinder or from a calibration against reference pressure standards can be adjusted to achieve an optimal agreement with the effective area ratios determined by cross-float measurements between the PCAs. The approach is based on the weighted least squares’ method and leads to minimum discrepancies between the initial effective areas and the cross-float area ratios on one side, and the synchronised effective areas on the other side. Examples of the new method’s application to five gas-operated PCAs and five oil-operated PCAs of PTB, and to five gas-operated PCAs of NIMT, which are used as primary pressure standards in the two institutes, are presented.
ISSN:0970-3950
0974-9853
DOI:10.1007/s12647-014-0116-y