Turbo sump for use with capacitive pressure sensor

Details Turbo sump for use with capacitive pressure sensor Turbo sump for use with capacitive pressure sensor

2007-04-17

2007-04-17

Noori, Max (Department: 2855)

Measuring and testing

Fluid pressure gauge

Diaphragm

Reexamination Certificate

active

11036775

ABSTRACT:
The disclosed pressure sensor includes a body, a diaphragm, and a flow defining structure. The body defines an interior volume. The diaphragm divides the interior volume into a first portion and a second portion. At least a first part of the diaphragm moves in a first direction when a pressure in the first portion increases relative to a pressure in the second portion. The first part of the diaphragm moves in a second direction when the pressure in the first portion decreases relative to the pressure in the second portion. The first part of the diaphragm and at least a first part of the body are characterized by a capacitance. The capacitance changes in response to movement of the first part of diaphragm relative to the first part of the body. The flow defining structure provides a fluid flow path from the first portion of the interior volume to a position outside of the internal volume. At least part of the fluid flow path extends from a first location to a second location. The at least part of the fluid flow path is characterized by a total length and a straight line distance. The total length is the shortest distance through the path from the first location to the second location. The straight line distance is the shortest distance between the first location and the second location. The total length is at least two times greater than the straight line distance.

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