Publications

Displaying 26 - 42 of 42

NIST Experience with Non-Rotating Force-Balanced Piston Gauges for Low Pressure Metrology

September 6, 2009

Author(s)

Jay H. Hendricks, Douglas A. Olson

The National Institute of Standards and Technology (NIST) Low Pressure Manometry Project maintains and operates primary standard ultrasonic interferometer manometers (UIMs) over the pressure range of 1 mPa to 360 kPa. Over the past decade a new type of

Towards portable vacuum standards

August 1, 2009

Author(s)

Jay H. Hendricks, Douglas A. Olson

Since the middle of the 17th century, when Italian physicist Evangelista Torricelli discovered that a glass tube filled with mercury could be used to measure atmospheric pressure, liquid-column manometers have been used as a primary standard to measure

NIST Special Publication 250-39 2009 NIST Calibration Services for Pressure Using Piston Gauge Standards

July 1, 2009

Author(s)

Douglas A. Olson

Effect of Dissolved Nitrogen Gas on the Density of Di-2-Ethylhexyl Sebacate: Working Fluid of the NIST Oil Ultrasonic Interferometer Manometer Pressure Standard

June 1, 2009

Author(s)

Jay H. Hendricks, Jacob R. Ricker, Justin H. Chow, Douglas A. Olson

The National Institute of Standards and Technology (NIST) Low Pressure Manometry Laboratory maintains national pressure standards ranging from 1 mPa to 360 kPa through the operation of four ultrasonic interferometer manometer (UIM) pressure standards. NIST

Bilateral Comparison Between NIST (USA) and NPLI (India) in the Pneumatic Pressure Region 0.4 MPa to 4.0 Mpa

March 5, 2007

Author(s)

Robert G. Driver, Douglas A. Olson, Nita Dilawar, A Bandyopadhyay

We report the results of a bilateral comparison of pressure measurement between NIST and NPLI using a piston gauge transfer standard (TS), designated as NPLI-4, over the range of nominal applied pressure 0.4 MPa to 4.0 MPa. This TS was cross-floated

Bilateral Comparison between NIST (USA) and NPLI (India) in the Hydraulic Pressure Region 40 MPa to 200 Mpa

August 1, 2006

Author(s)

Robert G. Driver, Douglas A. Olson, S Yadav, A Bandyopadhyay

We report here the results of a bilateral comparison of pressure measurement between the National Institute of Standards and Technology (NIST), Gaithersburg, USA and the National Physical Laboratory (NPLI), New Delhi, India, over the range of nominal

Primary Pressure Standards Based on Dimensionally Characterized Piston/Cylinder Assemblies

February 1, 2006

Author(s)

James W. Schmidt, K. Jain, A P. Miiller, Walter J. Bowers Jr., Douglas A. Olson

NIST has characterized two large diameter (35.8 mm) piston/cylinder assemblies as primary pressure standards in the range from 0.05 to 1.0 MPa with uncertainties approaching the best mercury manometers. The realizations of the artifacts as primary

Characterization of a compact 200 MPa controlled clearance piston gauge as a primary pressure standard using the Heydemann and Welch method

January 1, 2006

Author(s)

Ashish K. Bandyopadhyay, Douglas A. Olson

Accurate Determination of Equilibrium State Between Two Pressure Balances Using a Pressure Transducer

July 1, 2005

Author(s)

T Kobata, Douglas A. Olson

To determine an equilibrium state between two pressure balances accurately, the measurement method using a precise pressure transducer and two air-operated constant volume valves is proposed in this paper. The advantages of the proposed methods are as

Automating the Calibration of Two Piston Gage Pressure Balances

August 1, 2002

Author(s)

Douglas A. Olson, T Kobata

We propose a method to automate the data-gathering process in the cross-float calibration of one piston gage pressure balance against a second piston gage pressure balance. Rather than adjusting small trim masses until the balances generate equal pressure

Characterization of a Controlled-Clearance Piston Gauge Using the Heydemann-Welch Model

August 1, 2002

Author(s)

T Kobata, James W. Schmidt, Douglas A. Olson

A study on the characterization of a controlled-clearance piston gauge was performed at the National Institute of Standards and Technology (NIST). The characterization covers the pressure range from 37.5 MPa to 288 MPa, at jacket pressures up to 76 MPa. In

Capabilities and Uncertainties of the Piston Gage Pressure Standards at NIST

November 30, 2001

Author(s)

Douglas A. Olson

The National Institute of Standards and Technology operates and maintains piston gage pressure standards from 7 kPa to 280 Mpa, a span of over 4 decades in pressure. Gas capabilities range from 7 kPa to 1000 Mpa, and oil capabilities range from 1 Mpa to

Heat Transfer in Supercritical Carbon Dioxide With Convective Boundary Conditions

January 1, 2001

Author(s)

Douglas A. Olson

We report measurements of heat transfer coefficients of flowing supercritical carbon dioxide (7.38 MPa critical pressure, 31.1 degrees C critical temperature) in a heated horizontal tube. The tube was 10.9 mm ID, was heated over 274 cm, and had an unheated

Heat Transfer of Supercritical Carbon Dioxide Flowing in a Cooled Horizontal Tube

May 1, 2000

Author(s)

Douglas A. Olson

We report measurements of heat transfer coefficients of flowing supercritical carbon dioxide (7.38 MPa critical pressure, 31.1 C critical temperature) in a cooled horizontal tube. The tube was 10.9 mm ID, was cooled over 274 cm, and had an adiabatic

Turbulent Heat Transfer in Supercritical Carbon Dioxide in a Heated Horizontal Tube

August 1, 1999

Author(s)

Douglas A. Olson

Heat Transfer in Turbulent Supercritical Carbon Dioxide Flowing in a Heated Horizontal Tube

September 1, 1998

Author(s)

Douglas A. Olson, David W. Allen

The New NIST Low Frost-Point Humidity Generator

December 1, 1997

Author(s)

Gregory E. Scace, P H. Huang, Joseph T. Hodges, Douglas A. Olson, James R. Whetstone

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