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Performance of a Fast Response Agent Concentration Meter.

pdf icon Performance of a Fast Response Agent Concentration Meter. (1350 K)
Johnsson, E. L.; Mulholland, G. W.; Fraser, G. T.; Zuban, A. V.; Leonov, I. I.

Halon Options Technical Working Conference. Proceedings. HOTWC 2000. Sponsored by: University of New Mexico, Fire Suppression Systems Assoc., Fire and Safety Group, Great Lakes Chemical Corp., Halon Alternative Research Corp., Hughes Associates, Inc., Kidde Fenwal, Inc., Kidde International, Modular Protection, Inc., Next Generation Fire Suppression Technology Program, Sandia National Laboratories, Summit Environmental Corp., Inc. and 3M Specialty Materials. May 2-4, 2000, Albuquerque, NM, 480-491 pp, 2000.

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For more information contact: Center for Global Environmental Technologies, New Mexico Engineering Research Institute, University of New Mexico, 901 University Blvd., SE, Albuquerque, NM 87106-4339 USA.
Telephone: 505-272-7250,
Fax: 505-272-7203. WEB:


halon alternatives; measuring instruments; data analysis; calibrating; experiments; halons


There is a need for monitoring the concentration of potential halon replacement chemicals with millisecond response time. One scenario of great concern to the Air Force is the penetration of an enemy shell into the fuel tank of an aircraft. To prevent structural damage to the aircraft wing or fuselage to the point where the plane would crash, the Air Force considers it crucial that the fire extinguishing agent be distributed throughout the interior region surrounding the fuel tank, the so-called dry-bay, in less than 30 ms. Other applications of interest include evaluation of extinguishment of fires within military tanks penetrated by shells and in ship compartments. The instruments currently used for monitoring the concentration of Halon 1301 are the Statham analyzer and the Halonyzer. Each has a time response on the order of 200 ms or longer. Clearly, they are not capable of monitoring the distribution of the agent in a dry-bay type environment. There is a need for a much faster time response instrument for monitoring the potential halon replacement chemicals. The design goal is an instrument with a response time of 3 ms that could be used with a variety of fire suppression agents over a concentration range from 1 to 20% with an expanded uncertainty of the nominal value.