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. 19, 1999
Filed:
Nov. 10, 1998
Christopher Garthe, Dusseldorf, DE;
Pierburg AG, Neuss, DE;
Abstract
A flame ionization detector having a pair of spaced electrodes to which a DC voltage is applied and a flame produced between the electrodes by burning a gas whose composition is to be determined, thereby ions are produced which form an ion current between the electrodes which is representative of the gas composition to be measured. The flame detector is formed by a base plate having a first channel for inlet of the gas whose composition to be measured, a second channel for inlet of a combustion gas, a third channel connected to the first and second channels for conveying a mixture of the gases to an outlet communicating with a nozzle outlet in a ceramic plate on the base plate which faces an opening in a metal plate spaced at a predetermined distance from the ceramic plate such that the flame burns in the opening in the metal plate. An electrically conductive metal layer is disposed on the ceramic plate around the nozzle outlet therein. A negative pole of the DC voltage supply is connected to the metal plate as one of the electrodes and the positive pole of the DC voltage supply is connected to the electrically conductive metal layer as the other of the pair of electrodes. An output line is connected to the electrically conductive metal layer to provide an output signal.