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. 09, 1980
Filed:
Dec. 18, 1978
Alan A Schneider, Reisterstown, MD (US);
Catalyst Research Corporation, Baltimore, MD (US);
Abstract
The present invention provides a means for compensating for temperature induced variations in the span and zero signals of an electrochemical detector. The invention comprises a first compensating circuit electrically connected to the output of the detector and includes a first thermistor and a first amplifier which compensate for all variations in the span signal as well as some variation in the zero signal. A second compensating circuit comprising a second thermistor and a power source and voltage divider network electrically connected to the second thermistor for adjusting zero current wherein the output of the second thermistor is algebraically added to the output of the first compensating circuit by a second amplifier connected to the outputs of the first and second circuit and includes a resistance feedback loop to the output of the second thermistor.