Email Document Reference

Enter your email address below and the reference for this document will be sent to shortly from webmaster@ceesi.com.

Title: Inter-Laboratory Comparisons And Application Uncertainties Of Dry Piston Provers
Author: Harvey Padden
Source: 2004 Measurement Science Conference
Year Published: 2004
Abstract: Uncertainty analyses are essential to proper metrology. However, error sources can be accidentally omitted or miscalculated, so empirical verification of the uncertainty analysis is necessary. We have previously presented analyses asserting combined expanded uncertainties of 0.095% to 0.110% for our dry piston flow provers. To allow for miscalculation, we can be conservative and claim only 0.15%, but it is still necessary to verify the uncertainty by empirical means. At this level of accuracy, the only means of verification is through peer-to-peer interlaboratory comparisons. In the last year, we have performed informal comparisons of a single pair of provers with a number of national and private laboratories on three continents. We necessarily developed comparison methodology taking into account the particular characteristics of the instruments being compared. In order to do so, we also performed studies of the effects of certain error sources, such as inventory volume.

In order to prevent spam and automated file downloads for documents within the Measurement Library, please follow the instructions below and then you will be able to email a reference to this article.