Endress + Hauser Gmbh + Co. Kg

Endress+hauserse+co. Kg

Philipp Walser

Franco Ferraro

Robert Schmidt

Andreas Krumbholz

Michael Dötsch

A system for determining and/or monitoring a process variable of a medium in a container, comprising a sensor module with an oscillatable unit, which is arranged in such a manner in the container that the oscillatable unit extends to a defined immersion depth in the medium, or that the oscillatable unit is placed at the height of the predetermined fill level, a tubular extension and/or a temperature reduction unit of a defined length, a contacting module and an electronics module, composed of an exciter/receiving unit, which excites the oscillatable unit to execute oscillations and receives the oscillations of the oscillatable unit. Two electrical coupling paths are associated with the electronics module, and a control/evaluation unit, which based on at least one oscillation variable of the oscillations or based on a change of an oscillation variable of the oscillations, provides information concerning the process variable or the reaching of the predetermined fill level. The sensor module and the electronics module are either electrically connected directly with one another, wherein one of the two electrical coupling paths is activated, or wherein the sensor module and the electronics module are indirectly electrically connected with one another via the contacting module, and wherein both coupling paths are activated.

System for determining and/or monitoring a process variable of a medium

Apparatus () for determining and/or monitoring at least one process variable, comprising: a primary side (I) and a secondary side (II), which are galvanically isolated from one another, wherein the secondary side (II) has a sensor element sensitive for the process variable () and an electronics unit () of the secondary side and provides a measurement signal representing the process variable, and wherein the primary side (I) has an electronics unit () of the primary side for evaluating the measurement signal and for producing an output signal. The apparatus () is distinguished by features including that the electronics unit () of the secondary side has a modulation unit (), which produces a modulated measurement signal by at least at times modulating at least one other piece of information onto the measurement signal representing the process variable, and that the electronics unit () of the secondary side transmits the modulated measurement signal via a galvanically isolated interface to the primary side (I).

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Lorrach, Germany

Philipp Walser