DEVICE FOR DETERMINING AT LEAST ONE PROCESS VARIABLE

摘要

The invention relates to a device for determining at least one process variable of a medium in a container or in a pipeline, at least comprising a first element (5) and a second element (4), which are components of the device necessary for determining the process variable and which are in contact with one another at a contact point (12) that is exposed to a process temperature Tp. The invention is characterised in that the first element (5) consists of a first material (M1), the second element (4) consists of a second material (M2), the first material (M1) and the second material (M2) are selected and matched to each other such that a thermoelectric voltage Uth dependent on the difference between the process temperature Tp and the reference temperature Tref develops between the first material (M1) and the second material (M2) at the contact point (12), and the temperature determination unit (11) measures the thermoelectric voltage Uth and determines the process temperature Tp therefrom. The invention also relates to a corresponding method.