Gas detection apparatus and related method

Details Gas detection apparatus and related method Gas detection apparatus and related method

1989-04-03

1992-05-19

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing gas sample

422 98, 324464, 324469, G01N 2762, G01N 2764, G01N 2766

Patent

active

051146770

ABSTRACT:
The gas detection apparatus for detecting chemical agents in an air stream includes a radioactive source to ionize the air stream and an electrostatic field to increase the efficiency of the apparatus by neutralizing undesired ions, which allows a radioactive source with a lower radiation level to be used than would be required without such neutralization. A diffusion chamber including a baffle device is then used for an ion selection processes. Additional undesired ions are diffused into the walls of the diffusion chamber while the remaining ions, which are the ones sought to be detected, pass from the diffusion chamber into a collection chamber. Detection of the chemical agent ions is achieved when the remaining ions collide with the walls of a collection chamber, transferring their charge to thereby generate a current.

REFERENCES:
patent: 3601609 (1971-08-01), Yauger
patent: 4724394 (1988-02-01), Langer et al.
Chemical Systems Laboratory Contractor Report ARCSL-CR-81038, "M43E1 Detector Unit Chemical Agent, Automatic", Final Comprehensive Report and Human Factors Engineering Final Report, by Bernard C. Schluter, et al., Honeywell Inc, Jul. 1981, pp. 15-17
M8A1 Chemical Agent Alarm System (2 pages).

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