Ceramic heating device for use in gas sensor, has heating unit abutting at substrate with its entire circumference without forming space between unit and substrate, where unit is manufactured from electrically conducting material

摘要

The device (1) has a ceramic substrate (11), and a heating unit (12) arranged in inner area of the substrate, where the heating unit is manufactured from electrically conducting material e.g. metal oxide power, mixed with precious metal powder or glass powder coated. The heating unit abuts at the substrate with its entire circumference without forming an intermediate space between the heating unit and the substrate. A crystalline body is arranged in limiting area between the substrate and the heating unit. An independent claim is also included for a method for manufacturing a ceramic heating device.