Abstract: A temperature-sensitive element including an elongate ceramic mandrel having at least two non-insulated connection wires passing longitudinally therealong, which wires are connected to a bifilar winding wound over the outside surface of said mandrel, and an insulated coating of glass surrounding the elongate mandrel and its bifilar winding, the temperature-sensitive element being characterized by the fact that it includes at least one mineral-insulated screened cable having one end received inside the elongate mandrel, with the connection wires passing along the cable(s), and by the fact that the insulated covering also covers that zone of the mineral insulated-screened cable(s) which is immediately adjacent to the point where the cable(s) penetrates into said elongate mandrel. The invention is particularly suitable for measuring temperatures in the field of cryogenics and in the aerospace industry.

Abstract: The head for the hydrostatic detection of a liquid level includes a main enclosure which is divided by a membrane into two chambers, one of which communicates with a supply of air under pressure, while the other is joined to a probe that is immersed deeply into the liquid. That connection is made, in this case, by the intermediary of an auxiliary enclosure that also contains a primary chamber that communicates with the inlet of the air under pressure, and a secondary chamber which is separated from the primary chamber by a membrane. That membrane forms one piece with a valve mounted between the chamber and a small connecting conduit connected with a probe, which prevents any ill-timed rise of the liquid inside the device, in the case of the disappearance of the compressed-air supply, and which makes it possible, at the same time, to install the detector head above the tank.