Nitrogen analyzing apparatus

Details Nitrogen analyzing apparatus Nitrogen analyzing apparatus

2011-06-07

2011-06-07

Punnoose, Roy (Department: 2886)

Optics: measuring and testing

For light transmission or absorption

Of fluent material

Reexamination Certificate

active

07957003

ABSTRACT:
The present invention provides a nitrogen analyzing apparatus comprising:a nitrogen concentration measuring device configured to measure the concentration of an nitrogen impurities in a mixed gas including argon and oxygen as main components on the basis of emission intensity of a light emitted from the nitrogen impurities by an electric discharge in a discharge tube and an oxygen concentration of a sample gas introduced into the discharge tube, and a diluting oxygen-introducing device configured to add a diluting oxygen in the sample gas sampled from the mixed gas according to the oxygen concentration of the mixed gas.

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International Search Report for PCT/JP2007/052343, mailed Apr. 17, 2007.
Official Action, with English translation, in KR 10-2008-7021298 dated Jul. 30, 2010.

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