Method of manufacturing an element sensitive to a physical parameter of a flow of fluid and corresponding sensitive element

Abstract

The invention relates to a method of manufacturing an element sensitive to at least one physical parameter of a flow of fluid, comprising a step consisting in a single cycle of immersing, in molten glass, a core of a preassembled sensitive element, said core comprising at least two longitudinal channels along which there pass longitudinally at least two conducting connecting wires which are connected to an at least two-wire winding, said winding being suited to forming a resistive or inductive circuit for detecting said physical parameter, said immersion allowing the connecting wires to be sealed into the channels, allowing said channels to be filled and allowing the outside of the core to be coated in a single immersion, the core, at the end of said single immersion cycle, being sealed and coated in such a way as to obtain an assembled sensitive element. Advantageously, the winding may be 'corkscrew' wound inside the longitudinal channels, immersion allowing the connecting wires to be held on the winding and controlling the space between the turns of the winding.