US 12,072,248 B2
Thermometer having a diagnostic function
Marc Schalles, Erfurt (NL); and Pavo Vrdoljak, Nesselwang (DE)
Assigned to Endress+Hauser Wetzer GmbH+Co. KG, Nesselwang (DE)
Filed by Endress+Hauser Wetzer GmbH+Co. KG, Nesselwang (DE)
Filed on Apr. 24, 2023, as Appl. No. 18/305,526.
Application 18/305,526 is a continuation of application No. 17/258,006, granted, now 11,662,255, previously published as PCT/EP2019/067759, filed on Jul. 2, 2019.
Claims priority of application No. 10 2018 116 309.6 (DE), filed on Jul. 5, 2018.
Prior Publication US 2023/0258506 A1, Aug. 17, 2023
Int. Cl. G01K 7/02 (2021.01); G01K 7/16 (2006.01)
CPC G01K 7/02 (2013.01) [G01K 7/16 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A device for determining or monitoring the temperature of a medium, comprising:
a temperature sensor having a temperature-sensitive sensor element that is electrically contacted via at least a first connection line and a second connection line,
wherein the first connection line is divided into a first section and a second section,
wherein the first section, which faces the sensor element consists of a first material,
wherein the second section which faces away from the sensor element, consists of a second material that differs from the first material,
wherein the second connection line consists of the second material,
wherein the first section of the first connection line and at least a part of the second connection line form a first difference temperature sensor in the form of a thermocouple, wherein the temperature-sensitive sensor element of the temperature sensor is a resistance element, and
wherein the first connection line and the second connection line are directly attached to the resistance element or to a substrate on which the resistance element is arranged so that the first difference temperature sensor is embodied to detect a temperature gradient directly at the location of the temperature sensor.