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Search Publications by: John D. Wright (Assoc)

Displaying 126 - 134 of 134

The Performance of Transit Time Flowmeters in Heated Gas Mixtures

June 1, 1998

Author(s)

John D. Wright

An ultrasonic transit time flowmeter was tested over Reynolds numbers from 1000 to 100,000 in a calibration facility that generates gas flows with controlled temperature and composition. The gas mixtures were composed of air, nitrogen, carbon dioxide

The Long Term Calibration Stability of Critical Flow Nozzles and Laminar Flow Meters

February 12, 1998

Author(s)

John D. Wright

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

January 1, 1998

Author(s)

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

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

Intercomparison Tests of NRLM Transfer Standard with the Primary Standards of NIST, BNM-LNE, OFMET and PTB for Small Mass Flow Rates of Nitrogen Gas

January 1, 1998

Author(s)

John D. Wright, Shin-ichi Nakao

The NRLM transfer standard was brought to the following national laboratories from April 1996 to June 1998 and compared with their primary standards over the flow range from 0.01 g/min to 100 g/min of nitrogen gas: the National Institute of Standards and

Flowmeter Calibration Facility for Heated Gas Mixtures

December 1, 1997

Author(s)

John D. Wright, Pedro I. Espina