SINGLE HEAT FLUX SENSOR ARRANGEMENT

The invention describes a single heat flux sensor arrangement (1) comprising a sensor (10) comprising a layer (100) of thermally insulating material, an inner temperature measurement means (S1) arranged at an inner region of the insulating layer (100) and an outer temperature measurement means (S2) arranged at an outer region of the insulating layer (100); an evaluation unit (11) adapted to receive a temperature input from the inner 5 temperature measurement means (S1) and to receive a temperature input from the outer temperature measurement means (S2); and a heating means (12, S2) realized to deliberately raise the temperature of a region of the insulating layer (100). The invention further describes a non-invasive method of measuring a core body temperature (T0) of a subject (3).