In accordance with example embodiments of the present disclosure, a method for determining parameters for, and application of, models that correct for the effects of fluid inhomogeneity and compressibility on the ability of Coriolis meters to accurately measure the mass flow and/or density of a process fluid on a continuous basis is disclosed. Example embodiments mitigate the effect of multiphase fluid conditions on a Coriolis meter.

A fixing device for a flowmeter component is provided. It includes two fixing supports respectively fixed on two sides of the flowmeter component. Each fixing support is formed with a connecting arc, and the connecting arc is axisymmetric about a vertical direction. When the flowmeter component is a driver on a Coriolis mass flowmeter, the two fixing supports are fixed to two sides of the driver respectively, and the driver is fixed to flow tubes of the Coriolis mass flowmeter through the connecting arcs on the two fixing supports, to complete installation and fixation of the driver. This structure can make the connection stiffness of each the fixing support and the flow tube be symmetrical about middle plane of the flow tube, thereby avoid undesirable deformation caused by vibration in a working process of the flow tube, and improve zero-point stability and overall performance of the Coriolis mass flowmeter.

A field device of measuring- and automation technology, which field device meets requirements for operation in explosion-endangered environments. Safe operation of the field device in explosion-endangered environments is assured by a pluggable connector coupling for electrical coupling of different field device components. An essential feature of the pluggable connector coupling is a sealing element for spatial and gas-tight sealing of a contact region of contacting elements of the pluggable connector coupling from a free volume remaining in the pluggable connector coupling.

A measuring transducer includes a tube assembly including two pair of structurally identical tubes, each connected at their respective ends to each of two flow dividers, thereby forming four parallel flow paths, and each including alternating, adjoining straight and arcuate segments, wherein each of the first and third arcuate segments has a segment length corresponding to an extended length of a virtual center line of the segment, an arc radius corresponding to a radius of the virtual center line and a center point angle corresponding to a ratio between the segment length and the arc radius, such that each of the first arcuate segments are identical in both shape and size, and such that each of the third arcuate segments are identical in both shape and size, wherein the measuring transducer further includes an exciter assembly and a sensor assembly, each connected to the tube assembly.

A method for correcting a measured value of a measured variable with reference to a medium flowing through at least two measuring tubes, wherein each measuring tube is excited by an oscillation exciter to execute oscillations, and wherein the oscillations of each measuring tube are registered by oscillation sensors, wherein an electronic circuit monitors at least two of the following measured variables or, in each case, a measured variable derived therefrom: phase difference between measurement signals, resonant frequency, ratio of an oscillation exciter electrical current amplitude to a measuring tube oscillation amplitude, the method including: determining a plausibility; and, wherein upon failing a plausibility requirement of at least one of the measured variables, determining measured values of the measured variables of at least one, first/second measuring tube as a function of corresponding measured values of the measured variables of at least one, second/first measurement tube.

The invention relates to a Coriolis measuring transducer (10) of a Coriolis measuring device (1) as well as to the Coriolis measuring device for registering a mass flow or a density of a medium flowing through at least one measuring tube of the Coriolis measuring device, comprising:

the at least one measuring tube (11) having an inlet (11.1) and an outlet (11.2) and adapted to convey the medium between the inlet and outlet;
at least one exciter (12), which is adapted to excite the at least one measuring tube to execute oscillations;
at least one sensor (13), which is adapted to register deflection of the oscillations of the at least one measuring tube;
wherein at least one exciter as well as at least one sensor have, in each case, a coil apparatus (14) with, in each case, at least one coil (14.1) as well as, in each case, a magnet apparatus (15), wherein the magnet apparatus and the coil apparatus are movable relative to one another,
characterized in that at least one exciter or at least one sensor has an integrated temperature measuring device (14.3) for measuring temperature of the exciter, or of the sensor, as the case may be.

An EMI resistant electronics enclosure (200) is provided having a first compartment (206) and a second compartment (207), each defined by a body (205), being separated by a septum (208). A first aperture (209) in the septum (208) connects the first compartment (206) and the second compartment (207). A feed-through element (210) is provided having a first interface region (211) and a second interface region (212), wherein one or more primary conductors (217) extend between the first interface region (211) and the second interface region (212), and wherein the first interface region (211) resides in the first compartment (206), and the second interface region (212) resides in the second compartment (207). A conductive bar (232) circumscribes at least a portion of the feed-through element (210), and a conductive gasket (220) extends from the body (205) to the conductive bar (232), wherein a ground path is formed between the body (205) and the conductive bar (232) with the conductive gasket (220).

A Coriolis measuring device for measuring volume flow or density of a medium flowing through a measuring tube is disclosed, the device comprising: the measuring tube for conveying the medium; at least one exciter, which is adapted to excite the measuring tube to execute oscillations; at least one sensor, which is adapted to register the oscillations of the measuring tube; an electronic measuring/operating circuit, which is adapted to operate the exciter as well as the sensor and to determine and to output flow and/or density measurement values; wherein the electronic measuring/operating circuit has an electronics board, wherein at least one exciter has a stationary exciter element, and/or wherein at least one sensor has a stationary sensor element, wherein at least one stationary exciter element and/or at least one stationary sensor element is integrated into the electronics board.

A Coriolis sensor includes: a measurement tube having an inlet and an outlet; an exciter; and two sensor elements, wherein the exciter and/or the sensor element respectively have a coil arrangement and a magnet arrangement, wherein the magnet arrangement has a retainer for magnets, at least one first magnet group and at least one second magnet group, wherein the retainer is U-shaped with a first arm, a second arm and a base connecting the arms, wherein the retainer engages around the coil arrangement, wherein the first magnet group is retained on the first side of the coil arrangement by the retainer, and wherein the second magnet group is retained on the second side of the coil arrangement by the retainer, wherein the retainer has a cavity in a region of each of the arms for receiving a magnet group, wherein the retainer is manufactured using a 3D printing process.

The Coriolis mass flowmeter includes a measuring tube, an exciter mechanism, a sensor arrangement, and an electronic transmitter circuit including measuring and control electronics and drive electronics connected to the measuring and control electronics. The drive electronics are adapted, in a first operating mode, to generate an electrical driver signal that supplies electrical power to the exciter mechanism such that the measuring tube executes forced oscillations having an excitation frequency and, in a second operating mode, to cease generating the electrical driver signal. The transmitter circuit is adapted to switch the drive electronics from the first operating mode to the second operating mode such that the measuring tube executes free, damped oscillations in the second operating mode, and the measuring and control electronics are adapted to, based on a phase difference between oscillation measuring signals from the sensor arrangement, to generate measured values representing the mass flow rate.