Intercomparison Tests of NIST Primary Standard With NRLM Transfer Standard for Small Flow Rates of Nitrogen Gas

Published

January 1, 1998

Author(s)

John D. Wright, G E. Mattingly, Shin-ichi Nakao, Y Yokoi, M Takamoto

Abstract

Intercomparison tests of small gas flow measurements were carried out between the National Institute of Standards and Technology (NIST) in the United States of America and the national Research Laboratory of Metrology (NRLM) in Japan. A NRLM transfer standard package composed of sonic venturis, two pressure transducers, and two temperature sensors was calibrated using the NRLM primary standard for low gas flows (a gravimetric system) and was brought to the US in April of 1996. The NRLM transfer standard was compared to the NIST primary standard for low gas flows (a piston prover or volumetric system) using mass flow rates of nitrogen between 0.4 and 11.5g/min (0.3 to 10 L/min). The agreement between the NRLM transfer standard and the NIST primary standard was within +/-0.18%.

Citation

Metrologia

Volume

35

Pub Type

Journals

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Keywords

intercomparison test, piston prover, small mass flow rate, sonic venturi

Citation

Wright, J. , Mattingly, G. , Nakao, S. , Yokoi, Y. and Takamoto, M. (1998), Intercomparison Tests of NIST Primary Standard With NRLM Transfer Standard for Small Flow Rates of Nitrogen Gas, Metrologia, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=830586 (Accessed October 4, 2024)