Stoichiometric ratio measuring device

Details Stoichiometric ratio measuring device Stoichiometric ratio measuring device

1998-04-06

1999-12-28

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

356315, 356341, 356417, 356307, 73 2331, 250343, 2503416, 25033908, 250554, G01J 330, G01J 3114, G01N 2100, G01N 700

Patent

active

060088958

ABSTRACT:
In order to provide a measuring device for determining stoichiometric ratios when burning hydrocarbons by means of which stoichiometric ratios can be determined easily and reliably when burning hydrocarbons, it is proposed that a sensor be provided to detect an intensity of a first fluorescent radiation from C--H molecular fragments arising during the burning and a sensor be provided to detect an intensity of a second fluorescent radiation from molecular fragments arising during the burning and comprising only C atoms, that the sensors generate an intensity-dependent first and second sensor signal, respectively, on the basis of the first and the second fluorescent radiation, and that an evaluation circuit be provided which generates an output signal corresponding to a stoichiometric ratio from a ratio between the intensities of the first and the second fluorescent radiation.

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Sappey, Andrew D. et al., "Laser-Induced Fluorescence Detection of Singlet CH.sub.2 in Low-Pressure Methane/Oxygen Flames," Applied Physics B, Springer-Verlag, 1990, pp. 463-472.
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