The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 2005
Filed:
Feb. 19, 2003
Shigeyuki Akiyama, Kyoto, JP;
Satoshi Inoue, Kyoto, JP;
Masahiko Fujiwara, Kyoto, JP;
Horiba, Ltd., Kyoto, JP;
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 separatorfor condensing moisture contained in the sample gas as a condensed water and separating the condensed water from the sample gas, an NOconverterfor converting NOcontained in the sample gas into NO, a secondary cooling devicefor additionally cooling the sample gas, and an NO analyzer, 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. Further, the sample-gas line between the sampling probe and the drain separator is heated and/or thermally insulated over the entire length thereof. The measuring apparatus can provide a high-precision measurement while suppressing NOloss.