Mass flow rate/density sensor with a single curved measuring tube

Abstract

A single V-shaped tube ( ) is bent in a plane and has an inlet section ( ), an outlet section ( ), an inlet bend ( ), an outlet bend ( ); a vertex bend ( ) and a respective tube section ( ) between the inlet bend and the outlet bend. The distance between the vertex of the vertex bend and the inlet/outlet axis can be great. Two clamping bodies ( ) are clamped onto the tube sections defining a tube section. Flat bodies ( ) are fixed onto the clamping bodies ( ). Fixed to the flat bodies is an opposed-action body ( ) which extends along the axis of symmetry (I—I) up to the vertex bend, where it supports a first portion of an exciter assembly ( ) or a seismic exciter ( ′) which excites the tube section in a third mode of vibration at an associated natural frequency f . A sensor support ( ) and a sensor support ( ) are fixed to the flat body ( ). A velocity or displacement sensor ( ) is fixed to the tube section and the sensor supports. Inlet section and outlet section are held by a supporting frame ( ) to which a housing ( ) is fixed.