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Author: gregory scace
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1. A Humidity Generator for Temperatures to 200 °C and Pressures to 1.6 MPa
Published: 11/30/2012
Authors: D Vega-Maza, W Wyatt Miller, Dean C Ripple, Gregory E Scace
Abstract: We have constructed a new humidity generator that produces gas streams of known moisture content at temperatures from 85 °C to 200 °C, absolute pressures from 0.2 MPa to 1.6 MPa, and relative humidities from 10 % to 90 %. The generator produces a moi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905234

2. A Reference Standard for Measuring Humidity of Air Using a Re-entrant Radio Frequency Resonator
Published: 5/2/2006
Authors: Peter H. Huang, Dean C Ripple, Michael R Moldover, Gregory E Scace
Abstract: We developed a stable reference hygrometer suitable for operation at temperatures above ambient that has a robust design, inherent stability, and a well-understood theory of measurement. This hygrometer uses a reentrant, radio-frequency, cavity reson ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902995

3. A Second-Generation NIST Gravimetric Hygrometer
Published: 4/1/2010
Authors: Christopher W Meyer, Joseph Terence Hodges, Gregory E Scace, James R Whetstone, R W. Hyland
Abstract: 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 independe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903607

4. Automated Continuous-Flow Gravimetric Hygrometer as a Primary Humidity Standard
Published: 5/1/2008
Authors: Christopher W Meyer, Joseph Terence Hodges, R W. Hyland, Gregory E Scace, J Valencia-Rodriguez, James R Whetstone
Abstract: 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 de ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830962

5. Calibrating Water Permeation Tubes Using Saturator-Based Primary Trace Humidity Standards
Published: 5/1/2003
Authors: Gregory E Scace, Joseph Terence Hodges
Abstract: H^d2^O-containing permeation tubes are a key component of permeation tube humidity generators (PTGs). These devices are widely used for calibrating atmospheric pressure ionization mass spectrometers (APIMS) and for calibrating other trace humidity a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830844

6. Calibration of Hygrometers with the Hybrid Humidity Generator
Series: Special Publication (NIST SP)
Published: 12/14/2008
Authors: Christopher W Meyer, Joseph Terence Hodges, Peter H. Huang, W Wyatt Miller, Dean C Ripple, Gregory E Scace
Abstract: 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 ‹ ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832432

7. Calibration of Water Permeation Tubes
Series: Special Publication (NIST SP)
Report Number: 250-82
Published: Date unknown
Authors: Gregory E Scace, W Wyatt Miller
Abstract: NIST provides traceability of permeation tube humidity generators to national humidity standards by measuring the water permeation rate of permeation tubes submitted for calibration. Permeation tubes undergoing calibration are installed into a speci ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831014

8. Design and Performance of the New NIST Hybrid Humidity Generator
Published: 6/1/2009
Authors: Christopher W Meyer, W Wyatt Miller, Dean C Ripple, Gregory E Scace
Abstract: 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 prim ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904099

9. Design and Performance of the new NIST Hybrid Humidity Generator
Published: 8/1/2008
Authors: Christopher W Meyer, W Wyatt Miller, Dean C Ripple, Gregory E Scace
Abstract: 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832270

10. Developing advanced humidity standards to measure trace water vapor in specialty gases
Published: 1/1/0006
Authors: Joseph Terence Hodges, Gregory E Scace
Abstract: We describe primary thermodynamic standards for trace humidity generation maintained at NIST. Also, a discussion of NIST calibration services providing traceability of transfer standards to NIST primary standards is presented. Applications to the m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830904



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