Final report on the key comparison, CCM.PK15 in the pressure rangefrom 1.0 x 10-4 Pa to 1.0 Pa

Published

January 30, 2017

Author(s)

Christian Wuethrich, Hitoshi Akimichi, Mercede Bergoglio, James A. Fedchak, Karl Jousten, Sueng Soo Hong, Jorge T. Guzman

Abstract

The comparison CCM.M.P-K14 is a key comparison in pressure involving six laboratories in three regional metrological organizations (RMO). The measurand of the comparison is the accommodation coefficient of two spinning rotating gauge characterized in nitrogen from 0.1 mPa up to 0.9 Pa. The two transfer standards were circulated November 2009 until March 2011. The circulation consisted of three loops, one for each RMO, and a new calibration by the pilot between each loop. The stability of one of the transfer standards was poor and was worse than expected based on the previous history of the transfer standard, while the other transfer standard demonstrated good stability. All the participants demonstrated equivalence to the definition of pressure in their respective primary standards.

Citation

Metrologia

Pub Type

Journals

Keywords

spinning rotor gauges, SRG, key comparison, vacuum metrology, high-vacuum

Citation

Wuethrich, C. , Akimichi, H. , Bergoglio, M. , Fedchak, J. , Jousten, K. , Hong, S. and Guzman, J. (2017), Final report on the key comparison, CCM.PK15 in the pressure rangefrom 1.0 x 10-4 Pa to 1.0 Pa, Metrologia (Accessed October 14, 2025)