A polymeric flow tube assembly is provided. The flow tube assembly includes a flow conduit configured to allow fluid flow therethrough. A first coil is mounted with respect to the flow conduit and disposed about a first magnetic pole member. A second coil is mounted with respect to the flow conduit and is disposed about a second magnetic pole member. The second magnetic pole member is configured to cooperate with the first magnetic pole member to generate an electromagnetic field across a flow measurement aperture. First and second electrodes are positioned within the flow tube assembly to measure an electromotive force generated within a fluid in the flow measurement aperture. At least one of the first magnetic pole member, second magnetic pole member, first electrode and second electrode is formed, at least in part, of a polymer.

A magnetic insertion meter is disclosed herein. Disclosed insertion meters include in some examples, a sensor head tube cylinder having a textured front surface and at least two electrodes. Disclosed insertion meters include a textured front surface adapted to move the separation point of a fluid flowing over the sensor head tube towards the upstream surface as compared to the same sensor head tube without the textured front surface. Methods of measuring flow are also disclosed herein using example magnetic insertion meters.

A magnetic flowmeter has a conduit, an electrical coil, and a coil driver configured to energize the electrical coil with a periodic electrical signal and generate a magnetic field in the conduit that periodically reverses polarity. Electrodes are arranged to detect a voltage generated by flow of the conductive fluid through the conduit and through the magnetic field. A measurement system receives electrical signals from the electrodes and determines a flow rate of the conductive fluid using the electrical signals. The flowmeter has a meter verification system that includes a sensor configured to detect the magnetic field generated by electrical coil when it is energized by the coil driver. The meter verification system is configured to determine an amplitude of the periodically changing magnetic field and to use this amplitude to assess the current operational effectiveness of the magnetic flowmeter.

An electromagnetic flowmeter for monitoring a flow rate of a fluid includes a conduit and an electromagnetic assembly coupled to the conduit to generate a magnetic field inside the conduit. A ring assembly modifies a velocity profile of fluid arranged on an inner liner wall of the conduit. A position of the ring assembly is adjustable along the inner liner wall to varyingly reform the velocity profile of the fluid. A pair of electrodes mounted to the conduit detects induced voltage generated within the reformed fluid due to the magnetic field. The flow rate of the fluid is determined based on the induced voltage.

According to one embodiment, an electromagnetic flowmeter includes a tube, a lining, at least one protrusion, and a pair of electrodes. A fluid to be measured flows in the tube. The lining covers an inner surface of the tube. The protrusion protrudes from the inner surface and includes a hook for hooking the lining.

A flowmeter includes an exciter configured to excite fluid which is a measurement target, a state detector configured to detect a state of the fluid excited by the exciter, a driver configured to supply exciting current for driving the exciter, a first current detector that is disposed between the exciter and the driver, the first current detector being configured to detect the exciting current, and a processor configured to diagnose insulation deterioration of the exciter in accordance with a change of a detection result of the first current detector.

An apparatus for measuring flow of a fluid flowing using the magneto-inductive measuring principle, comprising a measuring tube having at least two subsections, wherein the subsections differ in diameter and/or geometry of cross sectional area; at least one magnet system having at least two coils for producing a magnetic field directed essentially perpendicularly to the flow direction of the fluid; at least two measuring electrode pairs for sensing induced voltage, wherein at least one measuring electrode pair is arranged in a first subsection and a second measuring electrode pair in a second subsection, wherein each measuring electrode pair includes first and second measuring electrodes, which lie opposite one another in the measuring tube and the respective connecting lines of the measuring electrodes are perpendicular to the tube axis and perpendicular to the magnetic field, and an electronics unit for signal registration and/or evaluation and for power supply of the coils, wherein the electronics unit is so embodied that it determines from the induced voltage the flow velocity of the fluid and/or the flow rate of the fluid for at least one subsection.

A flow monitoring system is described for monitoring flow of a mixed-phase sample comprising at least a first phase and a second phase having different electrical conductivities, the second phase being a liquid or a gas and substantially electrically non- conductive and the first phase being a liquid and having a conductivity higher than the second phase. The system comprises: a conduit through which the mixed-phase sample can be arranged to flow; tomography apparatus arranged to generate tomography data indicative of at least a first conductivity profile of at least a portion of a first cross section of the mixed phase sample when flowing through the conduit; a flow meter arranged to detect flow of the first phase though the conduit and provide a flow signal indicative of a flow velocity of the first phase; and processing means adapted to calculate, from said data, a fraction of said first cross section occupied by the first phase, and calculate, from said fraction and said flow signal, a volumetric flow rate of the first phase through the conduit.

A dispensing system for a beverage comprises in a tap system a bore for housing a duct. Along the bore, close to or on the duct, at least two electrodes are provided such that at least at some locations along the duct, the two electrodes are provided opposite to one another with the duct in between, thus constituting a capacitor. An oscillating signal is provided to one electrode and a signal is read out from the other electrode. As a beverage is drawn through the duct in a container, capacitance of the capacitor changes. The flowing beverage may have different characteristics, but capacitance may also change as the beverage in the duct is in conducting contact with a container that may be in contact with a ground contact. The change of capacitance results in a change of the amplitude of a detection circuit connected to the second electrode.

The present disclosure relates to a magnetically inductive flowmeter for determining flow velocity and/or volume flow of a medium, the flowmeter including a measuring tube for conveying the medium, a magnetic field producing means and at least one electrode assembly, which is installed in the measuring tube in such a manner that it forms a galvanic contact with the medium, wherein the electrode assembly has an electrode body, wherein the electrode body is stylus shaped and has a front end surface, wherein a pressure measuring transducer is coupled with the electrode body, and wherein the pressure measuring transducer is contactable with the pressure acting on the front end surface.