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You searched on: Author: douglas olson Sorted by: title

Displaying records 1 to 10 of 36 records.
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Published: 1/11/2010
Authors: Jay H Hendricks, Douglas A Olson
Abstract: 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 ...

2. A Capacitive Probe for Measuring the Clearance Between the Piston and the Cylinder of a Gas Piston Gauge
Published: 3/10/2010
Authors: Walter J. Bowers Jr., Douglas A Olson
Abstract: We propose a method of determining the radial clearance between the piston and cylinder of a gas piston gauge using a capacitive technique. This method allows a determination of the effective area of a piston gauge pressure standard, independent of ...

3. A gas pressure scale based on primary standard piston gauges
Published: 12/6/2010
Authors: Douglas A Olson, Robert G Driver, Walter J. Bowers Jr.
Abstract: The National Institute of Standards and Technology has redefined its gas pressure scale, up to 17 MPa, based on two primary standard piston gauges. The primary standard piston gauges are 35.8 mm in diameter and operate from 20 kPa to 1 MPa. Ten sec ...

4. Accurate Determination of Equilibrium State Between Two Pressure Balances Using a Pressure Transducer
Published: 7/1/2005
Authors: T Kobata, Douglas A Olson
Abstract: 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 a ...

5. Automating the Calibration of Two Piston Gage Pressure Balances
Published: 8/1/2002
Authors: Douglas A Olson, T Kobata
Abstract: 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 pr ...

6. Bilateral Comparison Between NIST (USA) and NPLI (India) in the Pneumatic Pressure Region 0.4 MPa to 4.0 Mpa
Published: 3/5/2007
Authors: Robert G Driver, Douglas A Olson, Nita Dilawar, A Bandyopadhyay
Abstract: 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 ...

7. Bilateral Comparison between NIST (USA) and NPLI (India) in the Hydraulic Pressure Region 40 MPa to 200 Mpa
Published: 8/1/2006
Authors: Robert G Driver, Douglas A Olson, S Yadav, A Bandyopadhyay
Abstract: 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 ...

8. Capabilities and Uncertainties of the Piston Gage Pressure Standards at NIST
Published: 11/30/2001
Author: Douglas A Olson
Abstract: 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 ...

9. Characterization of a Controlled-Clearance Piston Gauge Using the Heydemann-Welch Model
Published: 8/1/2002
Authors: T Kobata, James W Schmidt, Douglas A Olson
Abstract: 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 ...

10. Characterization of a compact 200 MPa controlled clearance piston gauge as a primary pressure standard using the Heydemann and Welch method
Published: 1/1/2006
Authors: Ashish K. Bandyopadhyay, Douglas A Olson

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