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:
Oct. 19, 2021
Filed:
Sep. 28, 2018
Applicant:
Rosemount Inc., Shakopee, MN (US);
Inventor:
Curtis W. Belknap, Jr., Houston, TX (US);
Assignee:
Rosemount Inc., Shakopee, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 30/68 (2006.01); G01N 30/78 (2006.01); G01N 30/02 (2006.01);
U.S. Cl.
CPC ...
G01N 30/68 (2013.01); G01N 30/78 (2013.01); G01N 2030/025 (2013.01);
Abstract
A microwave resonator flame ionization detector assembly includes a microwave resonator disposed proximate a flame to evaluate an ion concentration in a flame effluent. A resonant frequency of the microwave resonator is detected, and a reflection coefficient of the resonator is used to determine an electric permittivity of a material in which the resonator is immersed. The electric permittivity depends on an ion concentration proximal to the resonator, and the ion concentration is related to the concentration of hydrocarbons present in the flame.