Combination of a feedthrough element for an electric high-frequency signal and a probe, and a level meter metering device including a combination of this type

摘要

The invention relates to a combination of a feedthrough element for an electric high-frequency signal in a TDR level metering device, and a probe for guiding said high-frequency signal from the feedthrough element to the filling product surface of a filling product to be measured and back. The feedthrough element comprises at least one guiding element (6), into which the electric high-frequency signal is to be fed at an inlet point (10), and which transmits at an outlet point (17) the electric high-frequency signal to a probe (7) meant for guiding said high-frequency signal, a one-part or multipart mechanical carrier element (1), and a one-part or multipart insulation (11, 12) present between the carrier element (1) and the guiding element (6). The mentioned combination is characterized in that the impedance of the feedthrough element and the impedance of the probe (7) following the outlet point (17) are substantially matched to each other at the outlet point (17).