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Publication Citation: Use of higher order Heydemann-Welch model to characterize a controlled clearance piston gauge

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Author(s): Douglas A. Olson; Shaker A. Gelany; Alaaeldin A. Eltawil;
Title: Use of higher order Heydemann-Welch model to characterize a controlled clearance piston gauge
Published: October 17, 2012
Abstract: We present measurements on characterizing a new controlled-clearance piston gauge made by Ruska (Fluke Calibration) which has a 290 MPa maximum pressure and a nominal piston diameter of 3.27 mm. We tested the piston gauge to jacket pressures of over 80 % of the system pressure (but not exceeding 200 MPa). Measurements showed that the cylinder becomes stiffer as the jacket pressure increases, and that non-linear models of the Heydemann-Welch parameters improve the determination of the effective area. The relative standard uncertainty in the effective area of the piston gauge ranges from 16.0E-6 to 17.6E-6, and the agreement to the present NIST pressure scale is within the standard uncertainty.
Citation: Ptb-Mitteilungen
Volume: 45
Issue: 10
Pages: pp. 2469 - 2471
Keywords: controlled clearance piston gauge; effective area; Heydemann-Welch; piston gauge; pressure; primary pressure standard
Research Areas: Calibrations (Thermodynamic), Pressure & Vacuum, Pressure & Vacuum, SI (Thermodynamics Units)
DOI: http://dx.doi.org/10.1016/j.measurement.2011.10.047  (Note: May link to a non-U.S. Government webpage)
PDF version: PDF Document Click here to retrieve PDF version of paper (39KB)