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:
Oct. 21, 2003
Filed:
Oct. 24, 2000
Andreas Walte, Schwerin, DE;
Wolf Munchmeyer, Schwerin, DE;
Gerhard Matz, Buchholz, DE;
Torsten Hunte, Hamburg, DE;
Stefan Dohren, Tangstedt, DE;
WMA Airsense Analysentechnik GmbH, Schwerin, DE;
Abstract
The invention relates to a device for identifying gaseous compounds, comprising a sensor array ( ) having, for instance, ten gas sensors ( ) in the form of semiconductor gas sensors. Said sensor array ( ) has a supply line ( ) with an inlet ( ) and an outlet ( ). A switchable three-way valve ( ) is located in the supply line ( ), to which a selective collector unit ( ) is attached. Said collector unit ( ) comprises a special adsorber ( ), a heater ( ) and a separate feed pump ( ) with a flow sensor ( ). A secondary line ( ), in which a dilution unit ( ) is arranged, discharges into the feed line ( ) between the three-way valve ( ) and the sensor array ( ). A feeding and control unit ( ) also having a feed pump ( ) with a flow sensor ( ) is located in the area of the outlet ( ) of the sensor array ( ). An electrical line ( ) leading to an evaluation computer ( ) branches off from the sensor array ( ).