Apparatus for determining at least one process variable

摘要

An apparatus and method for determining at least one process variable of a medium in a container or in a pipeline. The apparatus including: at least a first element and a second element, which are necessary components of the apparatus for determining the process variable and which contact at a contact location, which is exposed to a process temperature. The first element comprises a first material, and the second element comprises a second material. The first material and the second material are selected and matched to one another in such a manner that at the contact location between the first material and the second material a thermovoltage dependent on the difference between the process temperature and a reference temperature arises; and a temperature determining unit measures the thermovoltage and determines the process temperature therefrom.

主权项

1. An apparatus for determining at least one process variable different from temperature of a medium in a container or in a pipeline, at least comprising:
a first element; a second element, and a temperature determining unit, wherein: said first element and said second element are necessary components of the apparatus for determining the process variable and which contact, at a contact location, which is exposed to a process temperature, said first element comprises a first material and has a first connection line, which contacts said first element with a first end region; said second element comprises a second material and has a second connection line, which contacts said second element with a first end region; a second end region of said first connection line and a second end region of said second connection line are led to said temperature determining unit, which is exposed to a reference temperature; said first material and said second material are selected and matched to one another in such a manner that at the contact location between said first material and said second material a thermovoltage dependent on the difference between the process temperature and said reference temperature arises; and said temperature determining unit measures the thermovoltage and determines the process temperature therefrom.