An apparatus and method of decreasing vibrational sensitivity of strain based measurements of fluid flow parameters for a fluid flow in a conduit is provided. The method includes using at least one vibrational sensor to sense a conduit to determine vibrational characteristics of the conduit, determining a predominant elastic axis using the measured vibrational characteristics, and securing a strain sensor array to an outer surface of the conduit, the strain sensor array having a plurality of strain sensors disposed at different axial positions of the conduit, the strain sensor array secured to the outer surface of the conduit at a position so that the strain sensor array is oriented substantially symmetric to the determined predominant elastic axis.

An interface adapted for connecting a fluid measurement point includes a body including at least two connection locations, wherein the body has fluid ducts, each of which has a connection location, wherein the fluid ducts have at their connection locations first duct axes, wherein the connection locations are especially coplanar, wherein the connection locations are adapted for connecting process connectors from a connection direction for sealed communication with the fluid ducts, wherein the fluid ducts are adapted via the process connectors to supply, and drain, a medium, respectively, to and from the fluid measurement point, wherein the interface has at least one holding element for releasably securing at least one process connector to the body, wherein the holding element has at least one process connector seat, wherein the holding element is adapted to be moved into an end position (EP) effecting the securement.

Disclosed is a method for determining the viscosity of a medium using a Coriolis mass flow meter, comprising: exciting bending vibrations in the measuring tube in a symmetrical bending vibration use mode using an exciter arranged symmetrically in relation to a longitudinal direction of the measuring tube; detecting sensor signals of a central vibration sensor also arranged symmetrically in relation to a longitudinal direction of the measuring tube; detecting sensor signals of a vibration sensor on the inlet side and of a vibration sensor on the outlet side; determining a phase relation or time delay between the sensor signals of the central vibration sensor and a symmetrical function of the sensor signals on the inlet-side and outlet-side vibration sensors. Determining the viscosity of the medium as a function of said phase relation or time delay.

A sensor assembly (100, 300) for a vibratory conduit (130a, 330) is provided. The sensor assembly (100, 300) includes a sensor bracket (110, 310) having an outer surface (112, 312) substantially symmetric about an axis (S) and including a complementary portion (112c, 312c). The sensor assembly (100, 300) also includes a tube ring (120, 220, 320) having an outer surface (122, 222, 322) including a complementary portion (122c, 222c, 322c) affixed to the complementary portion (112c, 312c) of the sensor bracket (110, 310). The axis (S) of the sensor bracket (110, 310) is external of the vibratory conduit (130a, 330) when the tube ring (120, 220, 320) is affixed to the vibratory conduit (130a, 330).

A method for determining the gas portion in the medium flowing through a Coriolis mass flowmeter, wherein the Coriolis mass flowmeter has at least one measuring tube, at least one oscillation generator, at least two oscillation sensors and at least one control and evaluation unit, wherein the method is characterized in that the density value ρ.sub.100 of the gas-free medium is determined in a ρ.sub.100 step, that the density value ρ.sub.mess of the medium flowing through the measuring tube is measured in a ρ.sub.mess step, that a quantity GVQ for the gas portion of the medium flowing through the measuring tube is calculated in a GVQ step with the density value ρ.sub.100 and the density value ρ.sub.mess, and that the quantity GVQ is output for the gas portion of the medium flowing through the measuring tube.

A Coriolis mass flowmeter having at least one measuring tube with at least one oscillation generator and at least two oscillation sensors and having at least two node elements. The at least one oscillation generator excites the measuring tube to oscillation during operation. The at least two node elements define the oscillation range. At least one node element has at least one stiffening element. An effective separation of undesired interference oscillations of the measuring tube is achieved by the at least one stiffening element increasing the stiffness of the measuring tube with respect to oscillations orthogonal to the excitation mode and to the Coriolis mode so that, during operation, the oscillation frequency of the oscillation orthogonal to the excitation mode and to the Coriolis mode is greater than the oscillation frequency of the excitation mode, preferably greater than that of the Coriolis mode.

A Coriolis flow meter, includes: a measuring tube arrangement with at least one measuring tube and a fixing body arrangement; at least one oscillation exciter and at least one oscillation sensor; a support apparatus with seat and fixing apparatus, wherein the fixing apparatus has at least one swingable fixing element, wherein the fixing apparatus is adapted to connect the measuring tube arrangement, for example, the at least one measuring tube, via the fixing body arrangement mechanically releasably with the support apparatus body, wherein the at least one fixing element is adapted in the case of connecting the measuring tube arrangement with the support apparatus body to exert a bending force on the fixing body arrangement for elastically bending the fixing body arrangement.

A brace bar (140, 140, 140a, 140a) configured to be removably attachable to vibratory conduits (130a, 130b) of a flowmeter (5) is provided. The attachment comprises a mechanical attachment, wherein the brace bar (140, 140, 140a, 140a) is movable about the vibratory conduits (130a, 130b). A component (14, 14a, 16, 16, 16a, 16a) of the flowmeter (5) sensor assembly (10) that is removably attachable to vibratory conduits (130a, 130b) is also provided. The attachment comprises a mechanical attachment, comprising: a coil portion (164, 170) and a magnet portion (165, 171), wherein the component (14, 14a, 16, 16, 16a, 16a) is movable about the vibratory conduits (130a, 130b). The brace bar is repositionable, such that heat stress is minimized, while repair and tuning of the sensor assembly is simplified.

A flowmeter (200) is provided having a flow inlet (210) and a flow outlet (210). A first conduit (208A) has an inlet leg (212A) fluidly coupled to a central conduit portion (212C), wherein the central conduit portion (212C) is further fluidly coupled to an outlet leg (212A). A second conduit (208B) has an inlet leg (212B) fluidly coupled to a central conduit portion (212C), wherein the central conduit portion (212C) is further fluidly coupled to an outlet leg (212B). The flow inlet (210) is fluidly coupled to a first end of the first conduit (208A) and a first end of the second conduit (208B), and the flow outlet (210) is fluidly coupled to a second end of the first conduit (208A) and a second end of the second conduit (208B). A manifold (206) is fluidly coupled to the inlet legs (212A, 212B) and the outlet legs (212A, 212B). A driver (214) is at least partially coupled to the manifold, wherein the driver (214) is operable to vibrate the first and second conduits (208A, 208B).

Provided is a Coriolis flow sensor assembly that includes a fluid flow assembly, including a flow tube, wherein the fluid flow assembly is configured to provide a flow path through the flow tube. The flow tube has at least one region of increased stiffness, which may be a result of a structural support component coupled to the flow tube. In another embodiment, the increased stiffness is caused by integral properties of the flow tube.