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:
Aug. 21, 2001
Filed:
Jan. 03, 2000
Peter Van Geloven, Nieuwerkerken, BE;
Silvia Lenaerts, Kuringen, BE;
Patrick van de Voorde, Loppem, BE;
Heraeus Electro-Nite International N.V., Houthalen, BE;
Abstract
A method for measurement of nitrogen oxides using a gas sensor. To reliably measure nitrogen oxides, the sensor has a reference electrode representing a constant oxygen partial pressure, at least two electrode pairs, with common a electrode associated with each pair of electrodes, and solid electrolytes arranged between the two electrodes of an electrode pair directly at the electrodes. The solid electrolyte between a first electrode pair is gas-permeable, while the solid electrolyte between a second electrode pair is gastight, whereby the second electrode pair is adapated for potentiometric or amperometric measurement of nitrogen oxides, and the first electrode pair is adapted for application of a current or a voltage to pump oxygen. The second electrode of the second electrode pair is constructed as a reference electrode on the reference gas side of the solid electrolyte of the second electrode pair. The sensor also has electrical leads for connection and for take-away of electric measurement signals.