Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1993-11-05
1995-08-22
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
422 91, 422 94, 250343, 250345, 250372, 250374, 86 11, G01N 2163, G01J 328
Patent
active
054437938
ABSTRACT:
This invention provides a means for detecting local atmospheric contaminants from safe distances. The invention means of a detector system comprise a pulsed laser, a sensitive photo-detector, various optical filters, and necessary digital control circuitry. The detector system employs laser technology in combination with a sensitive photo-detector to achieve detection of any hazardous gas elements or other pollutants remotely located from personnel who may subsequently be exposed. In operation, a pulsed laser or a tunable dye laser is employed as an excitation source for the contaminant or pollutant to achieve excitation of the contaminant or pollutant. When the excited molecule of the contaminant or pollutant returns to ground-state it emits a photon at a given (measurable) frequency. A sensitive photo-detector is filtered to permit detection of only the frequency at which a harmful gas (as an example of a contaminant or pollutant) fluoresces. Various filters can be utilized at once to enable the detector to detect more than one pollutant at a time. A timer in the system determines time elapse from the time the laser is pulsed to the time a photon is detected, the location of the gas pollutant can then be determined. Similarly, by relating distance and intensity of fluorescence via the detector, the density of the gas pollutant in the local atmosphere can be determined. The entire system is controlled by simple compact digital technology.
REFERENCES:
patent: 3761715 (1973-09-01), Menzies
patent: 3766380 (1973-10-01), Menzies
patent: 3891848 (1975-06-01), Fletcher et al.
patent: 4127329 (1978-11-01), Chang et al.
patent: 4200608 (1980-04-01), Croomes et al.
patent: 4516858 (1985-05-01), Gelbwachs
patent: 4529489 (1985-07-01), McDonald et al.
patent: 5015855 (1991-05-01), Braunuce et al.
patent: 5041734 (1991-08-01), Tetzlaft et al.
patent: 5241179 (1993-08-01), Carrieri
Basic Principles of Organic Chemistry, Second Edition, W. A. Benjamin, In Roberts and Caserio, pp. 960, 961.
Basic Principles of Organic Chemistry, Second Edition, W. A. Benjamin, Inc., Roberts and Caserio, pp. 1372-1375.
Davenport Wayne E.
Ehrlich John J.
Taylor Travis S.
Bhat N.
Bush Freddie M.
Lane Anthony T.
Nicholson Hugh P.
The United States of America as represented by the Secretary of
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