Email Document Reference

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

Title: Evaluation Of Two New Volumetric Primary Standards For Gas Volume Established By Ptb
Author: Bodo Mickan, Rainer Kramer
Source: 2009 International Symposium on Fluid Flow Measurement
Year Published: 2009
Abstract: The PTB has been operating a bell prover as the main primary standard for gas volume with a proofed uncertainty 1 of 0.06 % for more than 25 years. In the last two years there were two new primary volumetric standards established which operates in flow rate ranges comparable with the existing bell prover. One of them is a conventional bell prover of similar construction as the old one and has therefore the identical main operating range between 1 to 65 m3/h. The second one is a new actively driven piston prover based on a so-called comparator principle 23 operating mainly between 0,04 and 4 m3/h. The paper will describe the main principles and steps for providing the traceability for these new devices as well as the experimental evaluation of the uncertainties using sonic nozzles as transfer standards. The results will be evaluated also in relation to the actual defined reference value for gas flow determined in the CCM.FF-KC6 1 and to the results of nine other inter-comparisons.

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.