Solid pole oxygen sensor

A solid pole oxygen sensor comprising:

• a substantially cylindrical ceramic insulator having two longitudinally extending electroconductive zones spaced from each other thereon, means defining a recess in one end of the insulator;
• an adhesive;
• a disc-shaped oxygen sensor element extending into the recess from the one end of the insulator and joined by said adhesive to the one end of the insulator, said element having positive and negative electrodes formed on the circular surface thereof and comprising;
• a solid pole;
• a lead wire, one end of which is buried in the solid pole, said lead wire being made of Pt or Pt-Rh;
• and
• a solid electrolyte in which the solid pole is encased;
• and
• the end of the insulator is in contact with the circular upper surface of the sensor element with the electroconductive zones in contact with the positive and negative electrodes.

A solid pole oxygen sensor comprising;

• a substantially cylindrical ceramic insulator having two longitudinally extending electroconductive zones spaced from each other thereon;
• an adhesive;
• a disc-shaped oxygen sensor element joined by said adhesive to one end of the insulator, said element having positive and negative electrodes formed on the circular surface on one end thereof and the cylindrical sidewall thereof and comprising;
• a solid pole;
• a lead wire, one end of which is buried in the solid pole, said lead wire being made of Pt or Pt-Rh;
• and
• a solid electrolyte in which the solid pole is encased;
• and
• the end of the insulator is in contact with the periphery of the sensor element with the electroconductive zones in contact with the positive and negative electrodes.