Sensor i.e. oxide ceramic sensor, producing device for measuring probe utilized for measuring concentration of e.g. flue gas in combustion plant, has ceramic insulator whose peripheral wall is soldered to metallic casing

摘要

The device has an electrical conductor (5) surrounded by a casing (12) made of metal such as steel. A ceramic insulator (6) is arranged between the conductor and the metallic casing, where a peripheral wall of the insulator is soldered to the metallic casing using gold-solder or reducing-agent free solder. A metal layer i.e. platinum layer, is formed in a peripheral wall of the insulator and consists of burned metal paste. The insulator consists of oxide ceramic i.e. aluminum oxide. The electrical conductor is sintered into the ceramic forming the insulator and consists of platinum. An independent claim is also included for a method for producing a sensor producing device.