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Search Publications by: Christopher W. Meyer (Fed)

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Displaying 1 - 25 of 54

ITS10 Conference Digest

April 18, 2023
Author(s)
Christopher W. Meyer, Kathryn Miller, Weston L. Tew, Howard W. Yoon
The 10th International Temperature Symposium (ITS10) was held in Anaheim California on April 3rd to 7th, 2023. More than 180 abstracts were received and accepted and 159 of those were presented at the symposium. This document is a record of the symposium

Calibration of Hygrometers with the Hybrid Humidity Generator

September 23, 2021
Author(s)
Christopher W. Meyer, Tobias Herman, W. Wyatt Miller
We describe here the calibration of customer hygrometers using the NIST Hybrid Humidity Generator (HHG). This generator produces humidified air with water amount fractions (water mole fractions) ranging from 1.0×10−7 to 0.57 using calibration gas flows up

Report of the Pilot study CCQM-P188 (in parallel with CCQM-K120.a and b)

January 31, 2019
Author(s)
Christopher W. Meyer, Flores Edgar, Viallon Joele, Tiphaine Choteau, Philippe Moussay, Faraz Idrees, Robert Wielgosz, Daniel Rzesanke
The Pilot Study CCQM-P188 was conducted in parallel of the Key Comparisons CCQM-K120.a and CCQM-K120.b, which were designed to evaluate the level of compatibility of participants capabilities for value assigning carbon dioxide in air reference gas mixtures

APPENDIX TO THE REPORT:BILATERAL KEY COMPARISON SIM.T-K6.2 ON HUMIDITY STANDARDS IN THE DEW/FROST-POINT TEMPERATURE RANGE FROM -20 degC TO 20 degC

July 3, 2017
Author(s)
Peter H. Huang, Christopher W. Meyer, Enrique Martines-Lopez, Jesus Davila Pacheco, Edgar Mendez-Lango
A Regional Metrology Organization (RMO) Key Comparison of dew/frost point temperatures was carried out by the National Institute of Standards and Technology (NIST, USA) and the Centro Nacional de Metrologia (CENAM, Mexico) between July, 2008 and December

Thermophysical Properties of Carbon Dioxide and CO2-Rich Mixtures

May 9, 2016
Author(s)
Allan H. Harvey, Ian H. Bell, Marcia L. Huber, Arno R. Laesecke, Eric W. Lemmon, Christopher W. Meyer, Chris D. Muzny, Richard A. Perkins
This report summarizes the results of work performed under DOE/NETL Interagency Agreement DE- FE0003931, which began in October 2011 and ended (after a 6-month no-cost extension) March 31, 2015. The key objectives for this work were to: (1) Measure the dew

Assessment of Water Vapor Diffusion in Firefighter’s Protective Clothing

October 1, 2015
Author(s)
Shonali Nazare, Christopher W. Meyer, Daniel M. Madrzykowski
Structural firefighters often encounter hot and humid environments during interior firefighting. The water vapor transfer to and from the skin has great influence on thermo-physiological comfort of the firefigher. Quantitative information on water vapor

Dew-point Measurements For Water In Compressed Carbon Dioxide

August 6, 2015
Author(s)
Christopher W. Meyer, Allan H. Harvey
When transporting CO2 for sequestration, it is important to know the water dew point in order to avoid condensation that can lead to corrosion. We have constructed a flow apparatus to measure the water content at saturation in a compressed gas. A saturator

Draft B Report of Bilateral Key Comparison SIM.T-K6.2 on Humidity Standards In the Dew/Frost-point Temperature Range from -20 degC to 20 degC

September 25, 2014
Author(s)
Christopher W. Meyer, Peter H. Huang, Enrique Martines-Lopez, Edgar Mendez-Lango, Jesus Davila Pacheco
A Regional Metrology Organization (RMO) Key Comparison of dew/frost point temperatures TDP/FP was carried out by NIST and the Centro Nacional de Metrologia (CENAM, México) between July, 2008 and December, 2008. This report presents the results of this

Updated Uncertainty Budgets For NIST Thermocouple Calibrations

September 11, 2013
Author(s)
Christopher W. Meyer, Karen M. Garrity
We have recently updated the uncertainty budgets for calibrations in the NIST Thermocouple Calibration Laboratory. The purpose for the updates has been to 1) revise the estimated values of the relevant uncertainty elements to reflect the current

Uncertainty Budget for the NIST Hybrid Humidity Generator

December 1, 2012
Author(s)
Christopher W. Meyer, W Wyatt Miller, Dean C. Ripple, Gregory E. Scace
We provide here a detailed uncertainty budget for the new Hybrid Humidity Generator (HHG) that has been constructed at the National Institute of Standards and Technology (NIST). The HHG generates frost/dew points from –70 °C to +85 °C using calibration gas

A Second-Generation NIST Gravimetric Hygrometer

April 1, 2010
Author(s)
Christopher W. Meyer, Joseph T. Hodges, Gregory E. Scace, James R. Whetstone, R W. Hyland
A second-generation primary hygrometer has been completed at the National Institute of Standards and Technology (NIST). A gravimetric hygrometer measures humidity by separating the water from the carrier gas using desiccants and afterwards independently

Design and Performance of the New NIST Hybrid Humidity Generator

June 1, 2009
Author(s)
Christopher W. Meyer, W Wyatt Miller, Dean C. Ripple, Gregory E. Scace
A new humidity generator has been constructed at the National Institute of Standards and Technology and is now fully operational. The NIST Hybrid Humidity Generator (HHG) has replaced the Two-Pressure (2-P) Humidity Generator Mark II as the NIST primary

Calibration of Hygrometers with the Hybrid Humidity Generator

December 14, 2008
Author(s)
Christopher W. Meyer, Joseph T. Hodges, Peter H. Huang, W Wyatt Miller, Dean C. Ripple, Gregory E. Scace
We describe here the calibration of customer hygrometers using a new humidity generator that has been commissioned at the National Institute of Standards and Technology. The NIST Hybrid Humidity Generator (HHG) generates frost/dew points from –70 °C to +85

Design and Performance of the new NIST Hybrid Humidity Generator

August 1, 2008
Author(s)
Christopher W. Meyer, W Wyatt Miller, Dean C. Ripple, Gregory E. Scace
A new humidity generator has been constructed at the National Institute of Standards and Technology. Once fully operational, the NIST Hybrid Humidity Generator (HHG) will replace the Two-Pressure (2-P) Humidity Generator Mark II as the NIST primary

Adjustments to the NIST Realization of the ITS-90 from 5 K to 24.5561 K

May 1, 2008
Author(s)
Weston L. Tew, Christopher W. Meyer
Recent clarifications issued by the Consultative Committee on Thermometry (CCT) for the definitions of the equilibrium hydrogen (e-H2) triple points (TPs) and vapor-pressure points (VPs) have resulted in adjustments to the NIST-disseminated ITS-90 (T90) in

Automated Continuous-Flow Gravimetric Hygrometer as a Primary Humidity Standard

May 1, 2008
Author(s)
Christopher W. Meyer, Joseph T. Hodges, R W. Hyland, Gregory E. Scace, J Valencia-Rodriguez, James R. Whetstone
A new primary gravimetric hygrometer has been completed at the National Institute of Standards and Technology (NIST). This apparatus determines the humidity in a steadily flowing gas stream by first separating the water from the carrier gas using