SENSOR FOR DETECTING WHEN A TEMPERATURE THRESHOLD HAS BEEN TEMPORARILY EXCEEDED A SINGLE TIME

摘要

The invention relates to a sensor for detecting when a threshold temperature TS has been temporarily exceeded a single time, comprising at least one sensor element (1) with a sensor material consisting of a magnetocaloric alloy. The sensor material of the sensor element (1) transitions from a first state into a second state when the threshold temperature TS is exceeded, and the sensor material has a different magnetizability in the first state compared to the second state. A detection unit (5) is provided with which the transition of the sensor material of the sensor element (1) from the first state into the second state can be directly or indirectly detected.