NIST logo

Publications Portal

You searched on:
Author: robert berg
Sorted by: title

Displaying records 1 to 10 of 49 records.
Resort by: Date / Title


1. Accurate Measurements of Process Gas Flow with Laminar Flow Meters
Published: 10/15/2010
Authors: Thiago Cobu, Robert F Berg, John D Wright, Michael R Moldover
Abstract: We calibrated three models of commercially-manufactured, laminar flow meters (LFMs) with nitrogen at four pressures (100 kPa, 200 kPa, 300 kPa, and 400 kPa) over a 10:1 flow range using NIST‰s primary flow standards and a physical model. Without addi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906313

2. Calibration of Laminar Flow Meters for Process Gases
Published: 6/1/2012
Authors: John D Wright, Thiago Cobu, Robert F Berg, Michael R Moldover
Abstract: We calibrated three models of commercially-manufactured, laminar flow meters (LFMs) at four pressures (100 kPa, 200 kPa, 300 kPa, and 400 kPa) with five gases (N2, Ar, He, CO2, and SF6) over a 10:1 flow range using NIST‰s primary flow standards as re ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908560

3. Capillary flow meter for calibrating spinning rotor gauges
Published: 8/6/2008
Author: Robert F Berg
Abstract: This article describes a capillary flow meter whose maximum flow rate of 0.2 micromol/s (~0.2 cm3/min at ambient conditions) covers the range that is useful for calibrating spinning rotor gauges. Knowing the input pressure, output pressure, and tempe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915341

4. Constant pressure primary flow standard for gas flows from 0.01 cm^u3^/min to 100 cm^u3^/min (10^u-8^ mol/s to 10^u-5^ mol/s)
Published: 12/17/2013
Authors: Robert F Berg, Gooding Timothy, Robert Edward Vest
Abstract: We describe a flow meter for gas flows in the range from 0.01 sccm to 100 sccm with a relative standard uncertainty of 0.03 % at 1 sccm. (1 sccm ≈ 1 cm3/min of an ideal gas at 101325 Pa and 0 C ≈ 0.7 mol/s.) The flow meter calibrates a se ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914154

5. Critical Viscosity of Xenon: Surprises and Scientific Results
Published: 10/1/1998
Authors: Robert F Berg, Michael R Moldover, G A Zimmerli
Abstract: The Critical Viscosity of Xenon (CVX) experiment, which flew on board Space Shuttle flight STS-85 in August 1997, measured the viscosity of xenon near the liquid-vapor critical point. Very close to the critical temperature (T^dc^ = 290 K), the visco ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831511

6. Critical Viscosity of the Ionic Mixture Triethyl n-Hexyl Ammonium Triethyl n-Hexyl borate in Diphenyl Ether
Published: 9/15/1998
Authors: S. Wiegand, Robert F Berg, Johanna M.H. Levelt-Sengers
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902025

7. Critical exponent for the viscosity of carbon dioxide and xenon
Published: 8/1/1990
Authors: Robert F Berg, Michael R Moldover
Abstract: The viscosities eta of carbon dioxide and xenon have been measured near their critical points and the critical exponent y characterizing the asymptotic divergence, eta ~ |T- Tc|^-y, has been determined. Both fluids yielded exponents in the rangey = 0 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915285

8. Critical exponent for the viscosity of four binary liquids
Published: 9/15/1988
Authors: Robert F Berg, Michael R Moldover
Abstract: We have measured the viscosity of four binary mixtures near their consolute points: (1) methanol + cyclohexane, (2) isobutyric acid + water, (3) nitroethane + 3-methylpentane, and (4) 2-butoxyethanol + water. The viscosity data are consistent with th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915284

9. Critical exponent for viscosity
Published: 12/15/1990
Authors: Robert F Berg, Michael R Moldover
Abstract: We have measured the critical exponent y characterizing the divergence of the viscosity eta  |T ‹ Tc|^-y for carbon dioxide and xenon. The values of y for both fluids fall within the range y = 0.041 ± 0.001 and are consistent with the range y ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915286

10. Development of a Combinatorial Rheometer for Polymer Formulations
Published: 2/1/2004
Authors: H J Walls, Robert F Berg, Kathryn L Beers, Eric J. Amis
Abstract: Finding the best formulation for a new application, or fine-tuning an existing formulation to meet various customer needs, requires extensive sample preparation and testing. Our goal is to make this exploration more efficient for the property of visc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852353



Search NIST-wide:


(Search abstract and keywords)


Last Name:
First Name:







Special Publications:

Looking for a NIST Special Publication (NIST SP Series)? Place the series number and dash in the report number field (Example: 800-) and begin your search.

  • SP 250-XX: Calibration Services
  • SP 260-XX: Standard Reference Materials
  • SP 300-XX: Precision Measurement and Calibration
  • SP 400-XX: Semiconductor Measurement Technology
  • SP 480-XX: Law Enforcement Technology
  • SP 500-XX: Computer Systems Technology
  • SP 700-XX: Industrial Measurement Series
  • SP 800-XX: Computer Security Series
  • SP 823-XX: Integrated Services Digital Network Series