Patent ID: 7618188
Filing Date: 2009-11-17
Classification: G01L,G01P,H01L

Abstract:
1. A sensor element with at least one measuring element, which has piezoelectric and pyroelectric properties and is provided with measuring electrodes, where a measurement variable and a disturbance variable act simultaneously on the at least one measuring element, and where a measurement signal picked up by the measuring electrodes contains a noise signal, and with at least one compensating element, where only the disturbance variable acts on the compensating element, enabling a correction signal to be derived from the compensating element, which is used to compensate the noise signal in the measurement signal, wherein the compensating element is in thermal contact with a first and a second measuring element support of the measuring element, or with the measuring element along its longitudinal extension between the measuring element supports, such that essentially the same temperature field will prevail in the measuring element and in the compensating element.