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:
Jun. 24, 2003
Filed:
Feb. 01, 2001
Burkhard Stock, Lübeck, DE;
Abstract
An improved gas-measuring device and a gas-measuring process is provided for determining the concentration of a gas by infrared absorption. The improvement is the compact design of the gas-measuring device and the higher reliability of the measurement results furnished by the gas-measuring device and the gas-measuring process. The gas-measuring device has an infrared radiation source ( ), a pyramid-like beam splitter ( ), and a quadrant detector, which has two measuring detectors ( ) and two reference detectors ( ). This guarantees a compact design of the gas-measuring device and, as a consequence, low fault liability of the measurement. The gas-measuring process includes an advantageous evaluation of the measuring signals (M , M ) received by the two measuring detectors ( ) and of the measuring signals (R , R ) received by the two reference detectors ( ). The plurality of the measuring signals (M , M , R , R ) and the manner of their evaluation leads to a more reliable determination of the gas concentration.