Email Document Reference

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

Title: Properties For Accurate Gas Flow Measurements
Author: John D. Wright
Source: Flomeko 2010
Year Published: 2010
Abstract: Accurate gas properties are needed to take full advantage of the low uncertainties provided by NISTs Gas Flow Calibration Services. If a flowmeter user and NIST use different values for these properties (molecular mass, compressibility, density, viscosity, and critical flow factor), the users flow measurements will have errors. Since January 2009, calibrations conducted by NISTs Fluid Metrology Group use the NIST-supported database REFPROP version 8.1 to reduce calibration data. Prior to 2009, NISTs calibration data were reduced using REFPROP 7.0. Flowmeter users who recalibrate their meters at NIST and ignore the January 2009 change of database may erroneously conclude that either their meters or NISTs standards are not stable.

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.