Method for calibrating a spectrograph for gaseous samples

Details Method for calibrating a spectrograph for gaseous samples Method for calibrating a spectrograph for gaseous samples

1992-12-03

1994-08-23

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With raman type light scattering

2502521, G01J 344, G01N 2165

Patent

active

053412060

ABSTRACT:
A method for field calibrating a system adapted for spectrographic analysis of gaseous substances. The method uses an easily available gas, for example ambient air, thereby providing for field calibration of the system without the inconvenience of using a purified noble gas and a pre-measured calibration gas mixture. During calibration, spectrograms from the easily available gas are generated by the system at various number density levels of the gas. Information from the spectrograms is then used in setting an operating parameter of the system.

REFERENCES:
patent: 3728540 (1973-04-01), Todd et al.
patent: 4648714 (1987-03-01), Benner et al.
patent: 4692621 (1987-09-01), Passaro et al.
patent: 4784486 (1988-11-01), Van Wagenen et al.

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