Abstract: A vibration meter and a method of measuring a viscosity of a fluid flowing through a pipe are disclosed. The vibration meter comprises meter electronics and a transducer assembly with an electromechanical excitation arrangement and with a flow tube which oscillates in operation. A sensor arrangement produces sensor signals representative of inlet-side and outlet-side deflections of the flow tube. An evaluation circuit derives from said sensor signals and from an excitation current generated by an excitation circuit for the excitation arrangement a viscosity value representative of the viscosity of the fluid.

Abstract: A transducer has at least one at least temporarily vibrating flow tube of predeterminable lumen for conducting a fluid. The flow tube communicates with a connected pipe via an inlet tube section (103), ending in an inlet end, and an outlet tube section, ending in an outlet end, and in operation performs flexural vibrations about an axis of vibration joining the inlet and outlet ends. The flow tube has at least one arcuate tube section of predeterminable three-dimensional shape which adjoins a straight tube segment on the inlet side and a straight tube segment on the outlet side. At least one stiffening element is fixed directly on or in close proximity to the arcuate tube segment to stabilize the three-dimensional shape. By means of the at least one stiffening element, the cross sensitivity of the transducer is greatly reduced, so that cross talks from pressure to mass flow signals are minimized and the accuracy of the transducer is improved.

Abstract: A vibration meter and a method of measuring a viscosity of a fluid flowing through a pipe are disclosed. The vibration meter comprises meter electronics and a transducer assembly with an electromechanical excitation arrangement and with a flow tube which oscillates in operation. A sensor arrangement produces sensor signals. representative of inlet-side and outlet-side deflections of the flow tube. An evaluation circuit derives from said sensor signals and from an excitation current generated by an excitation circuit for the excitation arrangement a viscosity value representative of the viscosity of the fluid.

Abstract: A vibration meter and a method of measuring a viscosity of a fluid flowing through a pipe are disclosed. The vibration meter comprises meter electronics and a transducer assembly with an electromechanical excitation arrangement and with a flow tube which oscillates in operation. A sensor arrangement produces sensor signals representative of inlet-side and outlet-side deflections of the flow tube. An evaluation circuit derives from said sensor signals and from an excitation current generated by an excitation circuit for the excitation arrangement a viscosity value representative of the viscosity of the fluid.

Abstract: A Coriolis mass-flow/density meter includes at least one measuring tube through which a two, or more, phase medium during operation. A support means of the Coriolis mass-flow/density meter is fixed to an inlet end and an outlet end of the measuring tube and thus holds the tube such that it can oscillate. During operation, the measuring tube is made to oscillate with mechanical oscillations, especially bending oscillations, by means of an exciter arrangement. Additionally, the Coriolis mass-flow/density meter includes means for producing measurement signals (xs1, xs2) representing inlet end and outlet end oscillations of the measuring tube. An evaluation electronics produces an intermediate value (X?m) derived from the measurement signals (x1, xs2) and representing a provisionally determined mass flow rate.

Abstract: A Coriolis mass-flow/density meter includes at least one measuring tube through which a two, or more, phase medium during operation. A support means of the Coriolis mass-flow/density meter is fixed to an inlet end and an outlet end of the measuring tube and thus holds the tube such that it can oscillate. During operation, the measuring tube is made to oscillate with mechanical oscillations, especially bending oscillations, by means of an exciter arrangement. Additionally, the Coriolis mass-flow/density meter includes means for producing measurement signals (xs1, xs2) representing inlet end and outlet end oscillations of the measuring tube. An evaluation electronics produces an intermediate value (X?m) derived from the measurement signals (xs1, xs2) and representing a provisionally determined mass flow rate.

Abstract: A transducer has at least one at least temporarily vibrating flow tube of predeterminable lumen for conducting a fluid. The flow tube communicates with a connected pipe via an inlet tube section (103), ending in an inlet end, and an outlet tube section, ending in an outlet end, and in operation performs flexural vibrations about an axis of vibration joining the inlet and outlet ends. The flow tube has at least one arcuate tube section of predeterminable three-dimensional shape which adjoins a straight tube segment on the inlet side and a straight tube segment on the outlet side. At least one stiffening element is fixed directly on or in close proximity to the arcuate tube segment to stabilize the three-dimensional shape. By means of the at least one stiffening element, the cross sensitivity of the transducer is greatly reduced, so that cross talks from pressure to mass flow signals are minimized and the accuracy of the transducer is improved.

Abstract: The transducer (1) has at least one at least temporarily vibrating flow tube (101) of predeterminable lumen for conducting a fluid. The flow tube (101) communicates with a connected pipe via an inlet tube section (103), ending in an inlet end, and an outlet tube section (104), ending in an outlet end, and in operation performs flexural vibrations about an axis of vibration joining the inlet and outlet ends. The flow tube (101) has at least one arcuate tube section (101c) of predeterminable three-dimensional shape which adjoins a straight tube segment (101a) on the inlet side and a straight tube segment (101b) on the outlet side. At least one stiffening element (111, 112) is fixed directly on or in close proximity to the arcuate tube segment (101c) to stabilize the three-dimensional shape.

Abstract: A Coriolis mass-flow/density meter includes at least one measuring tube, which is traversed in operation by medium. A support structure of the Coriolis mass-flow/density meter is fixed at an inlet end and at an outlet end of the measuring tube and thus clamps the measuring tube such that it can oscillate. In operation, the measuring tube is caused by means of an exciter arrangement to oscillate with mechanical oscillations, especially bending oscillations. Furthermore, the Coriolis mass-flow/density meter includes structure for producing measurement signals (xs1, xs2) representing inlet-end and outlet-end oscillations of the measuring tube. An evaluation electronics produces an intermediate value (X?m) derived from the measurement signals (xs1, xs2) and representing an uncorrected mass flow rate. The evaluation electronics also produces a correction value (XK) for the intermediate value (X?m).

Abstract: The Coriolis mass-flow/density meter includes at least one measuring tube (11), which is traversed in operation by the medium. A support means (12) of the Coriolis mass-flow/density meter is fixed at an inlet end and at an outlet end of the measuring tube 11 and thus clamps the measuring tube such that it can oscillate. In operation, the measuring tube (11) is caused by means of an exciter arrangement (13) to oscillate with mechanical oscillations, especially bending oscillations. Furthermore, the Coriolis mass-flow/density meter includes means (141, 142) for producing measurement signals (xs1, xs2) representing inlet-end and outlet-end oscillations of the measuring tube (11). An evaluation electronics (2) produces an intermediate value (X?m) derived from the measurement signals (xs1, xs2) and representing an uncorrected mass flow rate. The evaluation electronics also produces a correction value (XK) for the intermediate value (X?m).

Abstract: A vibration meter and a method of measuring a viscosity of a fluid flowing through a pipe are disclosed. The vibration meter comprises meter electronics and a transducer assembly with an electromechanical excitation arrangement and with a flow tube which oscillates in operation. A sensor arrangement produces sensor signals representative of inlet-side and outlet-side deflections of the flow tube. An evaluation circuit derives from said sensor signals and from an excitation current generated by an excitation circuit for the excitation arrangement a viscosity value representative of the viscosity of the fluid.

Abstract: A transducer has at least one at least temporarily vibrating flow tube of predeterminable lumen for conducting a fluid. The flow tube communicates with a connected pipe via an inlet tube section (103), ending in an inlet end, and an outlet tube section, ending in an outlet end, and in operation performs flexural vibrations about an axis of vibration joining the inlet and outlet ends. The flow tube has at least one arcuate tube section of predeterminable three-dimensional shape which adjoins a straight tube segment on the inlet side and a straight tube segment on the outlet side. At least one stiffening element is fixed directly on or in close proximity to the arcuate tube segment to stabilize the three-dimensional shape. By means of the at least one stiffening element, the cross sensitivity of the transducer is greatly reduced, so that cross talks from pressure to mass flow signals are minimized and the accuracy of the transducer is improved.

Abstract: The transducer (1) has at least one at least temporarily vibrating flow tube (101) of predeterminable lumen for conducting a fluid. The flow tube (101) communicates with a connected pipe via an inlet tube section (103), ending in an inlet end, and an outlet tube section (104), ending in an outlet end, and in operation performs flexural vibrations about an axis of vibration joining the inlet and outlet ends. The flow tube (101) has at least one arcuate tube section (101c) of predeterminable three-dimensional shape which adjoins a straight tube segment (101a) on the inlet side and a straight tube segment (101b) on the outlet side. At least one stiffening element (111, 112) is fixed directly on or in close proximity to the arcuate tube segment (101c) to stabilize the three-dimensional shape.

Abstract: The transducer (1) has at least one at least temporarily vibrating flow tube (101) of predeterminable lumen for conducting a fluid. The flow tube (101) communicates with a connected pipe via an inlet tube section (103), ending in an inlet end, and an outlet tube section (104), ending in an outlet end, and in operation performs flexural vibrations about an axis of vibration joining the inlet and outlet ends. The flow tube (101) has at least one arcuate tube section (101c) of predeterminable three-dimensional shape which adjoins a straight tube segment (101a) on the inlet side and a straight tube segment (101b) on the outlet side. At least one stiffening element (111, 112) is fixed directly on or in close proximity to the arcuate tube segment (101c) to stabilize the three-dimensional shape.

Abstract: 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.

Abstract: A vibration meter and a method of measuring a viscosity of a fluid flowing through a pipe are disclosed. The vibration meter comprises meter electronics and a transducer assembly with an electromechanical excitation arrangement and with a flow tube which oscillates in operation. A sensor arrangement produces sensor signals representative of inlet-side and outlet-side deflections of the flow tube. An evaluation circuit derives from said sensor signals and from an excitation current generated by an excitation circuit for the excitation arrangement a viscosity value representative of the viscosity of the fluid.

Abstract: 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.

Abstract: The present Coriolis mass/flow density meter and method for measuring a mass flow rate of a medium flowing through a flow tube of a Coriolis mass flow meter provide measurement results which are independent of the current velocity field of the medium to be measured. At least one measuring tube is provided, through which the medium flows, which oscillates during operation. A means for measuring the oscillations is arranged at an inlet end of the measuring tube and provides a measurement signal. A second means for measuring the oscillations is arranged at the outlet of the measuring tube and provides a second measurement signal. A third measuring means provides a third measurement signal which represents the current Reynolds number of the flowing medium, Evaluation electronics generate a measurement value representing the mass through-flow. The evaluation electronics also generate a measurement value representing the current density of the medium.

Abstract: A vibratory transducer for a fluid flowing in a pipe comprising a curved flow tube for conducting the fluid. 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 means of a first coupler on the inlet side and by means of a second coupler on the outlet side. During operation of the transducer flow tube and antivibrator oscillates in opposition of phase. For driving flow tube and antivibrator 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.

Abstract: A single V-shaped tube (1) is bent in a plane and has an inlet section (11), an outlet section (12), an inlet bend (13), an outlet bend (14); a vertex bend (15) and a respective tube section (16, 17) 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 (2, 3) are clamped onto the tube sections defining a tube section. Flat bodies (31, 32) are fixed onto the clamping bodies (2, 3). Fixed to the flat bodies is an opposed-action body (41) which extends along the axis of symmetry (I—I) up to the vertex bend, where it supports a first portion of an exciter assembly (50) or a seismic exciter (50′) which excites the tube section in a third mode of vibration at an associated natural frequency f3. A sensor support (61) and a sensor support (62) are fixed to the flat body (31). A velocity or displacement sensor (71, 72) is fixed to the tube section and the sensor supports.