Patent ID: 6513387
Filing Date: 2003-02-04
Classification: G01L

Abstract:
A pressure measuring instrument comprising:(a) a mounting plate having an opening; (b) a flexible separating element disposed in the opening of the mounting plate and fastened thereto, a pressure to be measured being exerted on the separating element in an axial direction during a pressure measurement carried out with the instrument; (c) a reference body connected to the mounting plate by a suspension, the reference body having a reference surface facing a surface of the separating element, and the separating element and the suspension are the same material; and (d) a sensor element disposed between the surface of the separating element and the reference surface of the reference body, wherein the mass and the tensile rigidity of the separating element, and the mass and the tensile rigidity of the reference body and the suspension are adjusted to each other such that when the pressure measuring instrument is subject to an acceleration in the axial direction, the resulting axial displacement of the reference surface of the reference body is substantially equal to the axial displacement of the surface of the separating element such that the acceleration does not cause an error in the pressure measured by the sensor element.