A thermocouple device adapted to regenerate its junction in an ablating environment. The device includes a pair of dissimilar ribbon-like members the ends of which are welded or otherwise secured together. The individual members are folded on themselves in side-by-side non-contacting relation to provide a thermocouple assembly. The assembly--in turn--is imbedded in an ablating or like material. So positioned, ends of the members will reweld themselves as the ablating material melts away. The above feature is a continuous operation, rendering the operation of the device continuous.
