FOURIER TRANSFORM INFRARED (FTIR) SPECTROMETRIC TOXIC GAS...

Details FOURIER TRANSFORM INFRARED (FTIR) SPECTROMETRIC TOXIC GAS... FOURIER TRANSFORM INFRARED (FTIR) SPECTROMETRIC TOXIC GAS...

2005-03-01

2005-03-01

Nghiem, Michael (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Chemical analysis

Reexamination Certificate

active

06862535

ABSTRACT:
An FT-IR toxic gas monitoring system and method for detection of one or more toxic gas species in a fluid environment containing or susceptible to presence of toxic gases. Such gas monitoring system includes: (1) a spectroscopic monitoring assembly for transmitting modulated infrared radiation through a spectroscopic cell that contains a gas sample from such fluid environment and generating a corresponding digitized spectrum characteristics of such gas sample for analysis; (2) a gas sampling and delivery subsystem for sampling the fluid environment and delivering the gas sample to the spectroscopic cell; and (3) a computational assembly (i) including a stored signal-to-noise ratio reference, and a stored background spectrum for the fluid environment when the toxic gas species is not present, and (ii) arranged to analyze the digitized spectrum and responsively produce an output indicative of quantitative presence of the toxic gas species in the fluid environment.

REFERENCES:
patent: 5777735 (1998-07-01), Reagen
patent: 6134004 (2000-10-01), Reagen et al.
patent: 6748334 (2004-06-01), Perez et al.

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