Is a
Patent attributes
Patent Applicant
0
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shigeyuki Akiyama0
Masahiko Fujiwara0
Satoshi Inoue0
Date of Patent
April 12, 2005
0Patent Application Number
103676850
Date Filed
February 19, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
The present invention provides a NOx-concentration measuring apparatus D for quantitatively analyzing the concentration of NOx contained in a sample gas. The measuring apparatus D comprises a sampling probe for obtaining the sample gas, a drain separator 2 for condensing moisture contained in the sample gas as a condensed water and separating the condensed water from the sample gas, an NO2 converter 3 for converting NO2 contained in the sample gas into NO, a secondary cooling device 7 for additionally cooling the sample gas, and an NO analyzer 1, arranged in this order with respect to a sample-gas line of the NOx-concentration measuring apparatus. The drain separator is a high-flow-velocity cooling type drain separator.
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