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:
Feb. 21, 1984
Filed:
Apr. 03, 1981
Atsuo Watanabe, Kanagawa, JP;
Teruo Kaneko, Kanagawa, JP;
Takeo Tanaka, Kanagawa, JP;
Yoshio Saito, Kanagawa, JP;
Fuji Electric Co., Ltd., Kanagawa, JP;
Abstract
An ammonia gas analyzer and a sulfuric acid converter utilized in the ammonia gas analyzer in which a sample gas is maintained at a relatively high temperature prior to entering the sulfuric acid converter to thereby prevent acidic sulfuric acid sulfates and/or ammonia sulfates from crystallizing and being deposited on the walls of the device. The ammonia gas analyzer includes gas sampling means, a gas measuring channel connected to the gas sampling means, a comparison gas channel connected parallel to the measuring gas channel with the measuring gas channel including an NH.sub.3 /NO converter for converting NH.sub.3 in a sample gas into NO and means for measuring a concentration of NH.sub.3 on the basis of variations of an amount of NO in the measuring gas channel with respect to that in the comparison gas channel. A first sulfuric acid converter has an inlet connected to the sampling means and an outlet connected to an inlet portion of the comparison gas channel for converting sulfuric acid, sulfate and sulfur trioxide in the sample gas into sulfur dioxide. A second sulfuric acid converter has an inlet connected to the outlet of the NH.sub.3 /NO converter and an outlet connected to an inlet of the measuring means.