Radiant energy – Invisible radiant energy responsive electric signalling – With radiant energy source
Patent
1994-06-20
1995-11-21
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
With radiant energy source
2503361, G01N 2200
Patent
active
054689643
ABSTRACT:
A millimeter-wave sensor for detecting and measuring effluents from processing plants either remotely or on-site includes a high frequency signal source for transmitting frequency-modulated continuous waves in the millimeter or submillimeter range with a wide sweep capability and a computer-controlled detector for detecting a plurality of species of effluents on a real time basis. A high resolution spectrum of an effluent, or effluents, is generated by a deconvolution of the measured spectra resulting in a narrowing of the line widths by 2 or 3 orders of magnitude as compared with the pressure broadened spectra detected at atmospheric pressure for improved spectral specificity and measurement sensitivity. The sensor is particularly adapted for remote monitoring such as where access is limited or sensor cost restricts multiple sensors as well as for large area monitoring under nearly all weather conditions.
REFERENCES:
patent: 4287418 (1981-09-01), Orvin et al.
Bakhtiari Sasan
Dieckman Stephen L.
Gopalsami Nachappa
Raptis Apostolos C.
Fields Carolyn E.
The University of Chicago
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