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A compact, lightweight gas standards generator for permeation tubes

Washenfelder, R. A. and Roehl, C. M. and McKinney, K. A. and Julian, R. R. and Wennberg, P. O. (2003) A compact, lightweight gas standards generator for permeation tubes. Review of Scientific Instruments, 74 (6). pp. 3151-3154. ISSN 0034-6748.

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A lightweight, compact gas standards generator for permeation tubes is described. This system provides reliable temperature control during periods of intermittent power and is ideal for field measurements. A eutectic alloy with a high heat of fusion is used as a phase change material. This thermal source allows the system to maintain a constant permeation tube temperature of 46.6 °C for over 5 h in the absence of external power. This permeation system is currently being used in an aircraft chemical ionization mass spectrometer to provide HNO3 calibration.

Item Type:Article
Related URLs:
URLURL TypeDescription
Washenfelder, R. A.0000-0002-8106-3702
Roehl, C. M.0000-0001-5383-8462
McKinney, K. A.0000-0003-1129-1678
Julian, R. R.0000-0003-1580-8355
Wennberg, P. O.0000-0002-6126-3854
Additional Information:© 2003 American Institute of Physics. (Received 18 November 2002; accepted 17 February 2003) The authors thank Dana Roth for his assistance in uncovering the history and properties of bismuth alloys. This material is based upon work supported by the National Science Foundation under Grant No. ATM9871353 and the National Aeronautics and Space Administration under Grant No. NAG5-7527.
Funding AgencyGrant Number
Subject Keywords:measurement standards; mass spectrometer accessories; aircraft instrumentation; heat of fusion; calibration; thermal stability; porosity
Issue or Number:6
Record Number:CaltechAUTHORS:WASrsi03
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5263
Deposited By: Archive Administrator
Deposited On:06 Oct 2006
Last Modified:09 Mar 2020 13:19

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