Catalysis Poisons for Platinum-Wire Liquid-Level Sensors

  • C. K. Perkins
  • J. A. Petrowski
Conference paper
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 10)


The investigation of a small hydrogen explosion in this laboratory in June 1963 indicated that a platinum-wire liquid-level sensor may have been the ignition source [1]. Further consideration showed that the liquid-level system then under development for the Centaur was a potential danger because of the catalytic properties of the platinum wire.


Platinum Wire Ignition Temperature Sodium Arsenite Ignition Source Wire Resistance 
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  1. 1.
    P. T. Gardner et al., “Accident Report: Liquid-Hydrogen Tank Explosion”, General Dynamics/Astronautics Report No. 22A-63–099 (August 6, 1963).Google Scholar
  2. 2.
    B. Lewis and G. Von Elbe, Combustion, Flames, and Explosions of Gases, 2nd ed., Academic Press, New York (1961), p. 264.Google Scholar
  3. 3.
    International Critical Tables of Numerical Data, Physics, Chemistry, and Technology, McGraw-Hill, New York (1927).Google Scholar
  4. 4.
    J. A. Petrowski, “Catalysis Poisons for Platinum-Wire Liquid-Level Sensors”, General Dynamics/ Astronautics Report No. DDG-64–016 (July 27, 1964).Google Scholar

Copyright information

© Plenum Press, New York 1965

Authors and Affiliations

  • C. K. Perkins
    • 1
  • J. A. Petrowski
    • 1
  1. 1.General Dynamics/AstronauticsSan DiegoUSA

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