Patent ID: 6746585
Filing Date: 2004-06-08
Classification: G01N

Abstract:
A gas sensor, comprising:a body configured as a sintered ceramic laminate; a reference air duct arranged within a layer of the laminate; an electrical resistance heater arranged on a first side of the reference air duct; an electrode arrangement arranged on a second side of the reference air duct, the electrode arrangement including at least one internal reference electrode arranged on a border wall of the reference air duct and at least regionally permeable to gas and a Nernst electrode configured to be acted upon by the gas to be sensed and at least regionally permeable to gas, the Nernst electrode separated from the reference electrode by a solid electrolyte layer conductive and permeable to ions; and reference and Nernst electrode printed circuit traces connected to the respective electrodes, the printed circuit traces extending essentially in parallel to the reference air duct and, in a top view of layer planes of the laminate, the reference electrode printed circuit trace arranged at least partially next to the reference air duct, wherein the printed circuit traces connected to the electrodes have increased electrical conductivity with respect to the electrodes.