Importance

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Abstract

A temperature sensor that provides an electrical signal that is a known function of temperature. A conductive surface of the object whose temperature is to be measured is incorporated into the electrical circuit that measures the temperature-dependent electrical signal. If the surface is not electrically conductive, a thermally and electrically conductive region is provided, as by plating the surface or bonding a thin sheet of conductive material to the surface. The conductive portion of the surface is contacted at a first location by a portion of the sensor, and at a second, spatially distinct, location by a conductor that is needed to complete the electrical circuit. Unless electrical contact is established at both of these locations, the result is a condition that is readily identifiable. Since electrical contact will only be made if there is good thermal contact, thermal contact is verified by verifying the electrical contact as part of the measurement.

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First Claim