Coriolis mass flow meters work on the principle that the inertia created by fluid flowing through an oscillating tube causes the tube to twist in proportion to mass flow rate. Many Coriolis meters have two tubes. They are made to vibrate in opposition to each other by means of a magnetic coil. Sensors in the form of magnet and coil assemblies are mounted on the inlet and the outlet of both flow tubes. As the coils move through the magnetic field created by the magnet, they create a voltage in the form of a sine wave. These sine waves are the key to measuring mass flow.
The unique Omega shaped Coriolis mass flow meter is not just shaped in this way for the sake of differentiation from other manufacturers, and the shape was not chosen because it was the only one not yet under patent protection. The Rheonik mass flow meter is the result of intensive research work in the early 80s when mass flow meter technology came up. Dipl.-Ing. Karl Käppers worked on many different designs and tested them with regard to stability, reliability and accuracy.