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:
Mar. 03, 1992
Filed:
Jun. 06, 1990
Horst-Dieter Hattendorff, Bad Schwartau, DE;
Bernd Grabbet, Bad Schwartau, DE;
Eberhart Liesching, Gross Sarau, DE;
Regina Best, Lubeck, DE;
Dragerwerk Aktiengesellschaft, Lubeck, DE;
Abstract
The invention is directed to a sensor arrangement for optically measuring the components of a gas. The sensor arrangement includes a housing containing a transmitter, a receiver device, a heatable holder for a measuring cuvette and optical devices for establishing the beam path. The sensor arrangement is improved by limiting the heating of the cuvette walls to those areas which lie in the beam path without the pass-through area of the optical devices being narrowed by the heating device. Also, the cuvette walls are heated in the manner described above without electrical contacts being disposed on the cuvette or on the sensor. The heatable cuvette holder includes one window disposed in the beam path which is transmissive for the measuring radiation. When the cuvette is seated in the cuvette holder, this window lies in virtual contact engagement with the cuvette and has a surface facing away from the cuvette. The heating device is applied to this surface of the window and is configured to allow the beam to pass therethrough.