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:
Sep. 29, 2020
Filed:
Sep. 30, 2014
Rosemount Analytical Inc., Irvine, CA (US);
Bradley A. Butcher, La Verne, CA (US);
Chang-Dong Feng, Long Beach, CA (US);
Rosemount Inc., Shakopee, MN (US);
Abstract
A colorimetric wet chemistry analyzer for determining a concentration of an analyte of interest in a sample is provided. The analyzer comprising includes a reaction chamber configured to receive the sample and facilitate a reaction that changes a color of the sample based on the concentration of the analyte of interest. A photometric cell is operably coupled to the reaction chamber to receive the sample and direct illumination therethrough. The photometric cell has a first illumination source configured to provide illumination at a first wavelength through the photometric cell and a second illumination source configured to provide illumination at a second wavelength through the photometric cell. The second wavelength is different than the first wavelength. A photo detector is configured to detect illumination passing through the photometric cell. A controller is coupled to the first illumination source, the second illumination source and the photo detector and is configured to provide an indication of concentration relative to the analyte of interest based on a signal from the photo detector.