Patent ID: 8106740
Filing Date: 2012-01-31
Classification: G01K

Abstract:
1. A resistance thermometer, composed of a plurality of components, comprising: at least one substrate, which is composed essentially of a material, whose thermal coefficient of expansion is essentially greater than 10.5 ppm/K; at least one resistive element, which is arranged on said at least one substrate; and at least one electrically insulating, separating layer, which is arranged essentially between said at least one resistive element and said at least one substrate; wherein: said at least one substrate, said at least one resistive element and said at least one separating layer are embodied and matched to one another in such a manner, that a resulting effective thermal coefficient of expansion TCE wherein N is the number of components of the resistance thermometer, the index i indexes the individual components, and TCE i , d i and E i are, respectively, thermal coefficient of expansion, thickness and elasticity of the individual components, and F i takes into consideration a geometric factor; and the effective thermal coefficient of expansion TCE