Endress + Hauser Flowtec Ag

Other

Christian Sch&uuml;tze

Ennio Bitto

Wolfgang Drahm

Alfred Wenger

Ole Koudal

Christian Matt

Georg Szaloky

Alfred Rieder

Martin Josef Anklin

Rainer Lorenz

Michael Fuchs

This sensor ( ) generates accurate measuring results, for example with an error in the order of % of the measuring value, hat has mimimized production costs as well as a shorter overall length compared to that of conventional sensors. The sensor has two parallel V shaped measuring tubes ( ) each being of one-piece construction. Each tube has a straight inlet portion ( ), a straight outlet portion ( ), an inlet bend ( ) connected with the inlet portion, an outlet bend ( ) connected with the outlet portion, a straight tube portion ( ) connected with the inlet bend, a straight tube portion ( ) connected with the outlet bend, and a vertex bend ( ) connected with the first and second straight tube portions. The inlet portions ( ) are fixed in an inlet manifold ( ) and the outlet portions in an outlet manifold ( ); the manifolds ( ) are mounted in a support frame ( ) which forms part of a housing ( ). An excitation arrangement ( ) causes the measuring tubes ( ) to vibrate as a tuning fork. Interspaced sensor elements ( ) are fixed to the measuring tubes. Mounted in the support frame ( ) is a feedthrough ( ) for a printed-circuit board ( ) having conducting tracks ( ) to which leads ( ) of the excitation system ( ) and of the sensor elements ( ) are connected.

Coriolis mass flow rate/density/viscoy sensor with two bent measuring tubes

A vibratory transducer comprises a flow tube for conducting the fluid flowing in a pipe. The flow tube communicates with the pipe via an inlet-side tube section and an outlet-side tube section. An antivibrator is mechanically connected with the flow tube by an inlet-side coupler and an outlet-side coupler. For driving flow tube and antivibrator at an excitation frequency the transducer comprising an excitation system and for sensing inlet-side and outlet-side vibrations of the flow tube the transducer comprising a sensor system. An internal system formed by the flow tube, the antivibrator, the excitation system, and the sensor system, oscillating about a longitudinal axis of the transducer which is essentially in alignment with the inlet-side tube sections, forces a torsion of the couplers about the longitudinal axis and an essentially torsional elastic deformation of the inlet-side and outlet-side tube sections. The couplers are so dimensioned that an inherent torsion eigenmode of the inlet-side coupler and the inlet-side tube section has a natural frequency approximately equal to the excitation frequency, and an inherent torsion eigenmode of the outlet-side coupler and outlet-side tube section has a natural frequency essentially equal to the natural frequency of the inlet-side inherent torsion eigenmode.

Vibratory transducer

A Coriolis mass flow/density sensor is provided. The sensor includes a measuring tube for conducting a fluid. The measuring tube is fixed in a support and may be coupled to a pipe via an inlet tube and an outlet tube. The sensor further includes an excitation arrangement for vibrating the measuring tube in a predetermined vibration mode, a sensor arrangement for detecting vibrations of the measuring tube, and a brake assembly coupled to the measuring tube and the support. The brake assembly is operable to suppress at least one mode of vibrations other than the predetermined vibration mode.

Coriolis mass flow/density sensor with single straight measuring tube

A Coriolis mass flow/density sensor which can be installed in a pipe and through which a fluid to be measured flows during operation is balanced over a wide density range so that accurate measurements are possible. The Coriolis mass flow/density sensor includes a measuring tube, an excitation arrangement for exciting the measuring tube to vibrate in a second fundamental flexural mode of vibration; and a counterbalance member attached to the measuring tube which counterbalances the vibration of the measuring tube. A cantilever can be attached to the measuring tube midway between the inlet end and the outlet end of the measuring tube. First and second sensors sense the measuring tube vibration on the inlet and outlet sides of the measuring tube, respectively.

Coriolis mass flow/density sensor

Growing community of inventors

Basel, Switzerland

Christian Schütze

Growing community of inventors

Basel, Switzerland

Christian Sch&uuml;tze

Christian Schütze