| 摘要 |
A differential pressure sensor (1) comprising:
- a containment body (2) defining a first and a second cavity (3, 4) distributed along an axis of extension (5) and separated by a separation wall (6);
- a piston (7) housed slidably in the first cavity and comprising a magnet (11) mounted on a first axial end of the piston proximal to the separation wall;
- a magnetic sensor (12) housed in the second cavity near the separation wall and designed to sense the axial distance of the magnet from the separation wall and to generate a signal representing the distance;
wherein the differential pressure sensor also comprises a positioning system (20) housed in the second cavity and having at least one portion (22) of a first axial end thereof which supports the magnetic sensor and is elastically yieldable in an axial direction and away from the separation wall, and wherein the positioning system is structured in such a way that when the positioning system is moved towards the separation wall, the magnetic sensor contacts the latter before the positioning system reaches an axial stroke end inside the second cavity, said stroke end being reached thanks to the above-mentioned elastic yielding. |
