Arrangement for use with sensor for determining oxygen partial pressure in gas mixture, includes measuring electrode, solid electrolyte and reference electrode arranged in heating element, which is made of heat conducting material

摘要

#CMT# #/CMT# Arrangement includes measuring electrode (3), solid electrolyte (9) and reference electrode (4) arranged in a heating element (7). The heating element is formed in form of a hollow cylinder, and is made of a heat conducting material. A heating resistance (8) controlled electrically is provided with an electrical conductive path at the heating element. The heating resistance is formed as a linear conductive strip on outside lateral surface of the heating element. #CMT# : #/CMT# An independent claim is included for a method for determining oxygen partial pressure in a gas mixture, which involves maintaining temperature at 450-650[deg] C with a regular heating element. #CMT#USE : #/CMT# Arrangement for use with a sensor, for determining oxygen partial pressure in a gas mixture. #CMT#ADVANTAGE : #/CMT# The arrangement has high measuring accuracy and sensitivity ensuring high stability of the measuring signal, avoids pre-aging of electrodes, and enables to temper the gas mixture and reference gas in an improved manner. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a cross-sectional view of a sensor, which is formed with an arrangement. 3 : Measuring electrode 4 : Reference electrode 7 : Heating element 8 : Heating resistance 9 : Solid electrolyte #CMT#INORGANIC CHEMISTRY : #/CMT# Preferred Components: The conductive strip is made from platinum. The solid electrolyte is based on scandium doped zirconium oxide. The reference electrode is made from precious metal, particularly platinum. The measuring electrode is made from gold or scandium ceria stabilized zirconia, gold or yttria-stabilized-zirconia, lanthanum-strontium-chromium-cobalt oxide or lanthanum-calcium-chromium-cobalt oxide.