TRANSDUCER OF VIBRATION TYPE

摘要

The invention relates to a transducer comprising a measurement tube vibrating at least part of the time for guiding a medium to be measured, a counter-vibrator fixed on the measurement tube on the inlet side and forming a first coupling zone, and fixed on the measurement tube on the outlet side and forming a second coupling zone, at least one vibration exciter for driving at least the measurement tube and at least one vibration sensor for detecting vibrations of at least the measurement tube. During operation, the measurement tube performs bending vibrations about a theoretical bending vibration axis imaginarily connecting the two coupling zones to each other at least part of the time and/or at least in parts. The vibration sensor comprises a coil, particularly fixed on the counter-vibrator, and a permanent magnet magnetically coupled thereto and placed within a magnet cup made at least partially of magnetically conductive material, in turn mounted on a cup base, particularly mounted on the measurement tube. Furthermore, according to the invention, a particularly substantially circular cylindrical and/or tube-shaped cup wall extending from the cup base particularly substantially in the direction of the counter-vibrator, comprises at least one slit, particularly extending in segments in the direction of vibration of the measurement tube relative to the counter-vibrator.