PRESSURE SENSOR Russian patent published in 2017 - IPC G01L9/10 

FIELD: physics.

SUBSTANCE: invention relates to pressure sensors comprising an elastic sensitive element (SE) and a differential-inductive converter (DIP). The pressure sensor has a SE 1, directly perceiving the pressure of the controlled medium 2. DIP consists of a block of inductive coils 3 and a rod 4 with a plunger 5. The plunger 5 is located inside the inductive coil unit 3. Above the block of inductive coils 3 there is an additional inductive coil 6. A ferromagnetic core 7 is mounted on the rod 4. The linear dimension of the ferromagnetic core 7 along the axis of the rod 4 is equal to or slightly larger than the linear dimension of the additional inductive coil 6. A portion of the ferromagnetic core 7 corresponding to at least 1/5 and not more than 4/5 of the linear dimension of the additional induction coil 6 is located inside the coil 6. SE 1, DIP, additional inductive coil 6 and ferromagnetic core 7 are placed in the housing 8, which is closed by a cover 9.

EFFECT: providing the possibility of unmounting verification, which is provided by the presence of an additional inductive coil, located on the same axis as the block of inductive coils of the DIP of the pressure sensor.

1 dwg