Abstract: The invention relates to a sensor unit (2) for determining the core body temperature by means of measured values which can be determined outside the body on a surface, comprising at least one heat flow sensor (20, 20?), and at least one temperature sensor (21, 21?), which can be easily compactly produced and installed and allows optimized determination of the core body temperature.

Abstract: The invention describes a calorimetric measurement set-up having a sensor unit (1) for controlling the quality of the operation of a battery having a cathode and an anode, wherein the measurement set-up or the sensor unit (1) is connected to data processing electronics (11) via a communication link (12) and sensor measured values are therefore recorded and processed. This measurement set-up is intended to achieve reproducible and sufficiently accurate quality control of a battery.

Abstract: A heat flow sensor (HFS) and use thereof, which heat flow sensor should have the lowest possible invasiveness and nevertheless is robust enough to satisfy the requirements of individual applications. For this purpose, the heat flow sensor includes an active sensor element, which is provided with a highly thermally conductive heat-conducting element (8, 9) on the cold side and on the hot side, wherein the sensor element is covered or encased by an extremely thin, electrically strongly insulating, chemically inert, and strongly adhering protective layer (6).