Patent ID: 9347839
Filing Date: 2016-05-24
CPC Classification: G01L

Claim Text:
1. A measuring element made of a piezoelectric crystal of symmetry class 32, and which is realized flat in a plane x-y and intended for installation into a measuring body for measuring a force Fz that acts perpendicularly upon the plane x-y and causes a charge accumulation on the surfaces of the measuring element that receive the force Fz and are provided with electrodes, and wherein transverse forces Fxy that act orthogonally to the force Fz and generate an error signal at the measuring element are expected upon the measuring body during a measurement, the measuring element comprising: at least four identical measuring element segments, each segment including a crystal with straight flanks, wherein the segments are in the x-y plane adjacently arranged close to one another and spaced apart by narrow gaps at the flanks, and wherein said segments jointly form the shape of a disk or perforated disk in order to reduce the interference signals caused by transverse forces Fxy acting upon the measuring element, and in that the crystal orientations are aligned in the same direction or orthogonally to one another in the x-y plane of all segments.