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. 07, 1981
Filed:
Jun. 25, 1979
Applicant:
Inventors:
Steven A Wright, San Diego, CA (US);
Donald A Watts, Ramona, CA (US);
Assignee:
Monitor Labs, Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ; G01N / ;
U.S. Cl.
CPC ...
250373 ; 250435 ;
Abstract
A fluorescent gas analyzer that provides a DC output signal that is proportional to the concentration of a given gas that fluoresces within a reaction cell over a predetermined interval is disclosed. The analyzer includes a detector combination and a compensation circuit that prevent the output signal from being affected by scattered excitation energy detected by the fluorescence detector or by variations in the excitation energy. The analyzer is particularly adapted for detecting fluorescence from SO.sub.2 that is excited by UV radiation.