Wladimir Sabuga

TL;DR: In this paper, the Boltzmann constant k has been determined by dielectric-constant gas thermometry at the triple point of water (TPW) by applying a new special experimental setup consisting of a large-volume thermostat, a vacuum-isolated measuring system, stainless-steel 10 pF cylindrical capacitors, an autotransformer ratio capacitance bridge, a high-purity gas-handling system including a mass spectrometer, and traceably calibrated special pressure balances with pistoncylinder assemblies having effective areas of 2

TL;DR: In this paper, the theoretical and experimental foundations of those optical methods that are considered to be most promising to realize the unit of pressure at the highest level of metrology are reviewed.

TL;DR: In this article, the CCM key comparison of hydraulic pressure standards of nine National Metrology Institutes was carried out in the period from November 2002 to June 2004 in order to determine their degrees of equivalence in the range 10 MPa to 100 MPa of the gauge pressure.

TL;DR: In this paper, the authors compare agreement between laboratory calculations of the elastic distortion that piston-cylinder assemblies of pressure balances, the primary standard for pressure measurements, undergo when subjected to pressure applied via liquid media.

TL;DR: In this article, the authors used axisymmetric models developed and analyzed on the basis of the experimental data including the elastic properties of the piston-cylinder materials, pressure-dependent density and viscosity of the pressure-transmitting fluid, dimensions of piston and cylinder and the piston clearance as well as the conditions at the piston's boundaries.