Abstract: This invention relates to a tubular element provided with a temperature sensor, in particular for measuring overtemperatures in the tube bundle of superheaters in thermoelectric power plant steam generators, comprising a pair of concentric tubes forcibly locked one into the other by a mechanical plastic deformation process, at least one of the two tubes comprising in the mutually contacting surfaces a series of longitudinal grooves into which temperature sensors are inserted.

Abstract: This invention relates to an instrumented unit for measuring temperatures and heat flux in evaporative walls of steam generators composed of a series of parallel tubes comprising a temperature measurement device formed from a plurality of sensors extending fluid-tight from a support member and inserted non-forcibly into complementary curved seats of constant radius provided in the cross-section of one of the tubes, the support member being fixed in straddling relationship and comprising, for the sensors, seats which are fluid-tight against the tube.