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US 6,748,334 B1Granted
Specialty gas analysis system
OwnerJorge E. Perez, Richard T. Meyerinventors
Life of this patent
Estimating the term…
Abstract
A system and method for detection of impurities in gases comprising a Fourier transform infrared spectrometer and computation devices for system control, spectral analysis, and chemometrics.
Claims22
A system for detection of impurities in gases, the system comprising:
- a Fourier transform infrared spectrometer;
- and
- means for computation comprising:
- means for system control computation;
- means for spectral analysis computation;
- and
- means for chemometrics computation employing a running average of estimated impurity levels from a plurality of scans;
- and
- wherein said system control computation means and said spectral analysis computation means reduce spectrometer drift and perturbations from molecular background absorption by alternating scans between background spectra and sample spectra, which in conjuction with said chemometrics computation means increases signal-to-noise ratio.
6 more elements
A method for detection of impurities in gases, the method comprising the steps of:
- providing a Fourier transform infrared spectrometer;
- and
- employing a means for computation comprising:
- employing means for system control computation;
- performing spectral analysis using means for spectral analysis computation;
- and
- performing chemometrics analysis employing a running average of estimated impurity levels from a plurality of scans using means for chemometrics computation;
- and
- wherein employing system control computation means and performing spectral analysis comprise reducing spectrometer drift and perturbations from molecular background absorption by alternating scans between background spectra and sample spectra, which in conjunction with the chemometrics analysis step increases signal-to-noise ratio.
6 more elements
A system for detection of impurities in gases, the system comprising:
- a Fourier transform infrared spectrometer;
- means for computation comprising:
- means for system control computation;
- means for spectral analysis computation;
- and
- means for chemometrics computation employing a running average of estimated impurity levels from a plurality of scans;
- and
- a detector operating at approximately room temperature, said system having a limit of detection of gas impurities of between approximately 10-25 ppb/v.
5 more elements
A system for detection of impurities in gases, the system comprising:
- a Fourier transform infrared spectrometer;
- and
- means for computation comprising:
- means for system control computation;
- means for spectral analysis computation;
- and
- means for chemometrics computation employing a running average of estimated impurity levels from a plurality of scans;
- and
- wherein said system control computation means comprises temperature control means for control of moisture buildup.
6 more elements
A system for detection of impurities in gases, the system comprising:
- a Fourier transform infrared spectrometer;
- and
- means for computation comprising:
- means for system control computation;
- means for spectral analysis computation;
- and
- means for chemometrics computation employing a running average of estimated impurity levels from a plurality of scans;
- and
- wherein said chemometrics computation means computes an average concentration of an impurity at every scan.
6 more elements
A method for detection of impurities in gases, the method comprising the steps of:
- providing a Fourier transform infrared spectrometer;
- employing a means for computation comprising:
- employing means for system control computation;
- performing spectral analysis using means for spectral analysis computation;
- and
- performing chemometrics analysis employing a running average of estimated impurity levels from a plurality of scans using means for chemometrics computation;
- and
- employing a detector operating at approximately room temperature and establishing a limit of detection of gas impurities of between approximately 10-25 ppb/v.
5 more elements
A method for detection of impurities in gases, the method comprising the steps of:
- providing a Fourier transform infrared spectrometer;
- and
- employing a means for computation comprising:
- employing means for system control computation;
- performing spectral analysis using means for spectral analysis computation;
- and
- performing chemometrics analysis employing a running average of estimated impurity levels from a plurality of scans using means for chemometrics computation;
- and
- wherein employing system control computation means comprises controlling moisture buildup employing temperature control means.
6 more elements
A method for detection of impurities in gases, the method comprising the steps of:
- providing a Fourier transform infrared spectrometer;
- and
- employing a means for computation comprising:
- employing means for system control computation;
- performing spectral analysis using means for spectral analysis computation;
- and
- performing chemometrics analysis employing a running average of estimated impurity levels from a plurality of scans using means for chemometrics computation;
- and
- wherein performing chemometrics analysis comprises computing an average concentration of an impurity at every scan.
6 more elements
Dependencies are inferred from the claim text.