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. 11, 2007
Filed:
Jun. 01, 2005
Rasmus Behring, Lubeck, DE;
Peter Dreyer, Pansdorf, DE;
Horst-dieter Hattendorff, Bad Schwartau, DE;
Bernd-michael Dicks, Ratekau, DE;
Hans Matthiessen, Bad Schwartau, DE;
Rasmus Behring, Lubeck, DE;
Peter Dreyer, Pansdorf, DE;
Horst-Dieter Hattendorff, Bad Schwartau, DE;
Bernd-Michael Dicks, Ratekau, DE;
Hans Matthiessen, Bad Schwartau, DE;
Abstract
The invention relates to an apparatus and a method for improved correction of drift in an infrared measuring instrument. The measurement signal furnished by a thermal detector is split into a direct voltage component and an alternating voltage component. By means of calibration curves (), a calculated comparison variable is formed from a measured, averaged concentration value The correction value ΔT for the drift correction is obtained from the difference between the corresponding measured size of the direct voltage component and the comparison variable