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:
Jan. 25, 2000
Filed:
Nov. 12, 1998
John Hiss, III, Castleton, NY (US);
Harvey Patashnick, Voorheesville, NY (US);
Rupprecht & Patashnick Company, Inc., Albany, NY (US);
Abstract
The mass of particulate of an effluent gas flowing in a stack is directly measured with a mass measurement assembly supported within the stack. The mass measurement assembly preferably includes an inertial mass measurement transducer which provides near real-time mass readings. The mass measurement assembly also includes a particulate collector which can be equilibrated in situ. A pressure transducer measures a pressure differential across the equilibrated collector prior to sampling, to determine a pressure coefficient of frequency in a calibration operation. The pressure transducer also measures a pressure differential across the collector during sampling which measurement is used along with the pressure coefficient of frequency to derive an adjusted mass reading, corrected to compensate for pressure changes.