Suspended diaphragm pressure sensor

Details Suspended diaphragm pressure sensor Suspended diaphragm pressure sensor

G - Physics

01

L

G01L 13/06 (2006.01) G01L 9/00 (2006.01)

Patent

CA 2169723

A pressure sensor (40) includes a diaphragm assembly (54A) with a pair of diaphragm (58A, 60A) joined together along a rim and having spaced apart centers to form a cavity (62A) between them. A pressure input (50A) applies a pressurized fluid to external surfaces of the diaphragms. The diaphragm assembly (54A) is connected to a mounting block along a tab (82A) leaving the remainder of the diaphragm (54A) free from solid mounting. Deflection of the diaphragm assembly (54A) is sensed and is related to applied pressure.

Un capteur de pression (40) comprend un ensemble (54A) à membranes où deux membranes (58A, 60A) sont assemblées le long d'un rebord et dont les parties centrales sont espacées afin de former une cavité (62A) entre elles. Une admission (50A) de pression permet d'appliquer un fludie sous pression sur les surfaces externes des membranes. L'ensemble (54A) à membranes est raccordé à un bloc d'assemblage le long d'une patte (82A), laissant le reste de l'ensemble (54A) à membranes libre pour un autre montage fixe. Le dispositif de détection permet de détecter le fléchissement de l'ensemble (54A) à membranes, ce fléchissement étant représentatif de la pression appliquée.

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