Patent ID: 8434350
Filing Date: 2013-05-07
Classification: G01F,G01N

Abstract:
1. An apparatus for determining and/or monitoring at least one process variable of a medium, comprising: at least one mechanically oscillatable unit; at least one transducer unit; which excites said mechanically oscillatable unit to mechanical oscillations via an exciter signal and which receives the mechanical oscillations of said mechanically oscillatable unit and converts such to a received signal; and at least one electronics unit, which supplies at least one compensation element with the exciter signal and from which said electronics unit receives a compensation signal, wherein: said transducer unit has at least one piezoelectric element, and the at least said one electronics unit, supplies said transducer unit with the exciter signal and which receives the received signal from said transducer unit; said compensation element has at least one element made at least partially of a piezoelectric material and said mechanically oscillatable unit is an oscillatable membrane, or diaphragm, or a single rod or an oscillatory fork.