Apparatus for high oxygen concentration measurement using limiti

Details Apparatus for high oxygen concentration measurement using limiti Apparatus for high oxygen concentration measurement using limiti

1997-02-05

1997-11-25

Williams, Hezron E.

Measuring and testing

Gas analysis

Gas of combustion

73 2321, 73 3101, 422 83, 422 94, 204406, 204409, G01N 2700, G01N 122, G01M 1500

Patent

active

056914644

ABSTRACT:
A gas analysis apparatus using multiple orifices of preselected sizes to attain a calculated gas mixing ratio for diluting an oxygen sample to a concentration less than 95% prior to application to a limiting current oxygen sensor. The apparatus comprises a regulator for regulating the pressures of incoming flows of air and oxygen sample to be measured, a valve for allowing the concentration of the air sample to oxygen sample to be measured, and a system for calculating the air sample/oxygen sample mixing ratio based on the known air sample concentration and then, based on the known air concentration and calculated mixing ratio, calculating the unknown sample concentration from the output of the oxygen sensor.

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