Abstract: A system and method of maintaining back pressure located downstream of the Coriolis meter maintains the pressure downstream of the Coriolis meter in relation to the surface back pressure (SBP). At least one flow control device is located downstream of the Coriolis meter. The flow control device of the present invention (the BPV) automatically maintains the downstream pressure to less than or equal to fifty percent (50%) of the surface back pressure. A pressure regulator sets the back pressure to allow for a standalone device. Additional valves allow adjustment of the back pressure and allow for pressure relief and full flow bypass.

Abstract: A magnetic flow meter assembly having a tubular body that has two opposing ends that define a fluid flow path therebetween for a conductive fluid. The magnetic flow meter assembly further includes a pair of coil assemblies which are configured to pass current as received from voltage regulators via a first and second coil driver. The coil assemblies can therefore generate a magnetic field wherein a pair of measuring electrodes detect a voltage induced by the conductive fluid passing through said magnetic field. Moreover, the coil assemblies are each electrically coupled with at least one sensor that provides feedback to a respective voltage regulator via a proportional-integral-derivative (PID) controller configured to minimize the error between a respective measured current and a target current.

Abstract: A method for determining flow rate of a multiphase fluid. The method includes measuring a first pressure differential (316) of the multiphase fluid flowing through a rotodynamic pump (310) operating at a rotational speed thereby driving the multiphase fluid, measuring a second pressure differential (326) of the multiphase fluid flowing through a portion (320) of a fluid conduit positioned in series with said rotodynamic pump, and determining, based on the first and second pressure differentials and the rotational speed of said rotodynamic pump, a flow rate of the multiphase fluid.

Abstract: A thermal flowmeter includes a tube, a temperature measuring device disposed on the tube and detecting a first temperature of a fluid, a heating and temperature measuring device disposed on the tube and detecting a second temperature of the fluid, a controller causing the heating and temperature measuring device to generate heat, a power determining unit determining a power consumption of the heating and temperature measuring device, a flow rate obtaining unit converting the power consumption into a flow rate, a flow rate correcting unit correcting the flow rate, a memory unit storing a first zero-point power consumption, a zero-point power ratio calculating unit calculating a zero-point power ratio based on the first zero-point power consumption and a second zero-point power consumption, and a setting unit calculating a correction factor based on the zero-point power ratio and setting the correction factor in the flow rate correcting unit.

Abstract: The present disclosure relates to a Coriolis mass flow meter including: a measuring tube; an one exciter for generating vibrations in the measuring tube; two sensors for detecting the vibrations in the measuring tube and for outputting associated sensor signals; and an operating and evaluating unit for determining a mass flow value of a medium in the measuring tube based on a phase difference or time difference between the sensor signals, wherein for Reynolds numbers below a Reynolds number threshold a cross-sensitivity to a viscosity of the medium correlates with a Stokes number, wherein the operating and evaluating unit is configured to determine a current value of the Stokes number for Reynolds numbers below the lower Reynolds number threshold and to compensate for the influence of the cross-sensitivity in the determining of the mass flow.

Abstract: Disclosed is a flow meter with at least two measuring sensors, preferably ultrasonic sensors, spaced apart from each other, wherein the coupling of the measuring signals into and out of a fluid is performed via a coupling element which is inserted flush into a circumferential wall of a measuring channel.

Abstract: Microwave measuring arrangement for determining loading two-phase flow with gaseous carrier medium in tube of channel system (1) with small solid and/or liquid particles. Microwaves with frequencies between 0.95 and 1.05 times the frequency of waveguide fundamental wave, are coupled into an electrically conductive section of the tube/channel system (1), section being delimited by filed rods (4,4?) and acting as resonator, the shift in the resonant frequency of the resonator on account of loading of the medium with solid and/or liquid particles is determined. To suppress interference (reflected, diffracted and/or superimposed) in the tube/or channel system (1), two auxiliary field rods (6, 7 and 6?, 7?) assigned to each filed rod (4,4?) are provided, Auxiliary filed rods (6, 7 and 6?, 7) are arranged at an angle ? with respect to the field rod (4, 4?) of ?=+45°±10 and/or ?=?45°±10° and/or ?=+135°±10° and/or ?=?135°±.

Abstract: An electromagnetic flow meter comprises a detector having a measurement tube, a magnetic excitation coil, and a pair of detecting electrodes; a magnetic excitation circuit; a flow rate calculation circuit that calculates the flow rate of a fluid flowing through the measurement tube; and an error detection circuit comprising a differential noise measurement circuit configured to measure a level of a magnetic flux differential noise based on an electromotive force generated between the pair of detecting electrodes disposed in the measurement tube and an index calculation circuit configured to calculate an index indicating an error in the flow rate calculated by the flow rate calculation circuit based on the level of the magnetic flux differential noise measured by the differential noise measurement circuit.

Abstract: Methods, apparatus, and systems for flow measurements by alternating magnetic fields are provided. An example alternating magnetic field flowmeter includes a magnetic token movable within a conduit for guiding a fluid flow (conductive or non-conductive) along a flow path, a magnetic field generator configured to generate alternating magnetic fields within the conduit to move the magnetic token along the flow path with a first flow velocity and opposite to the flow path with a second flow velocity, a detector configured to measure respective first and second electrical signals responsive to the alternating magnetic fields, the first and second electrical signals associated with the first and second flow velocities, and a processor configured to determine a flow rate of the fluid based on the first and second electrical signals. The alternating magnetic field flowmeter can include a calibrator configured to manually or automatically calibrate the flow rate with a correction factor.

Abstract: A measuring device for measuring flow and/or composition of a measured medium in a pipe or tube by registering an ultrasonic measurement signal includes a measurement transmitter and a connection adapter for mechanical securement of the measurement transmitter on the pipe or tube, in which the connection adapter has a longitudinal axis and the measuring device includes a measuring transducer element and at least one metal hose, wherein at least one signal transmission cable is arranged in the metal hose for signal transmission between the measurement transmitter and a sensor element, and wherein the metal hose mechanically connects the measuring transducer element with the connection adapter.

Abstract: The invention relates in particular to a method for determining physical, chemical, and/or biological properties of a medium (M) located in the interior (30) of a waveguide (3) using at least one acoustic wave which has propagated at least partly through the medium (M). According to the invention, a first wall section (31a) and a second wall section (31b) of the waveguide (3) are connected together via a connection piece (31c) such that a second surface wave (OW2) propagates to the first wall section (31a) at least partly via the connection piece (31c). One of the wall sections (31a, 31b) and/or the connection piece (31c) is provided with at least one reflective element (4) on which at least one pert of a: least one first surface wave (OW1) that is excited on the first wall section (31a) by incurs of a transmitter (SE) is reflected ss a third surface wave (OW1?).

Abstract: Disclosed are a structure of a flow measurement sensor based on time-of-flight and a method for installation thereof, the structure comprises at least one pair of a first flow measurement sensor and a second flow measurement sensor vertically installed on a pipeline wall, a beam transmit-receive end both provided respectively at a bottom of the first flow measurement sensor and the second flow measurement sensor and is capable of emitting and receiving beams, a beam straight line formed between a first beam transmit-receive end and a second beam transmit-receive end does not intersect with an axis of the pipeline, and forms, with the axis of the pipeline, an included angle less than 90° .

Abstract: An electropotential detection electrode includes a main body portion including a liquid-contact portion exposed into a measurement tube and formed by covering a base material with a conductor and a terminal portion electrically connected to the conductor. The main body portion includes a small diameter portion having a cylindrical shape and a large diameter portion having a disc shape extending outward from the small diameter portion in a radial direction. The terminal portion includes an electrically conductive body having a cylindrical body that accommodates the large diameter portion fitted therein and a shaft portion extending from the electrically conductive body in a direction opposite from the main body portion. The large diameter portion is provided on an outer peripheral portion thereof with an annular recessed portion that defines an annular groove between the large diameter portion and the cylindrical body.

Abstract: A main body portion including at one end thereof a liquid-contact portion exposed into a measurement tube and being electrically conductive from the one end to the other end is provided. A terminal portion including a disc shaped portion (contact portion) that is separably in contact with the other end of the main body portion is provided. A connecting portion configured to connect a pulling tool to the main body portion is provided.

Abstract: An air speed probe with a cylindrical probe body having a length, and a frusto-conical tip at an end of the cylindrical probe body. A center bore with a first diameter and first depth is formed in a center of the tip and coaxially disposed along a portion of the length of the cylindrical probe body. Radial bores with second diameters and second depths are formed in a sidewall of the tip, where the first diameter is wider than the second diameter, and the first depth is shallower than the second depth.

Abstract: Pressure sensors that may be used in flowrate monitoring or measuring systems, where the pressure sensors may enable simple, low-cost designs that are readily implemented. One example may provide a pressure sensor having a built-in flow path with a dimensional variation. Pressures of a fluid on each side of the dimensional variation may be compared to each other. The measured differential pressure may then be converted to a flowrate through the flow path.

Abstract: Embodiments of the present disclosure aim to provide advanced multiphase flow meters utilizing advanced sensor configurations and data analysis. In an embodiment, a system is provided and configured with permittivity sensors configured around the throat section of an extended throat venturi enclosure. In a particular embodiment, the permittivity sensors in the described system are configured with a computer system or a micro-computer system, that can be configured with a computer circuit board comprising a processor, memory, networking capability, and software.

Abstract: A priming valve includes a fluid flow path, a fluid inlet configured to couple to a fluid outlet of a fluid channel including at least one sensor configured to characterize at least one attribute of a fluid, a fluid outlet, a valve seat, and a connector. The connector engages the valve seat to prevent fluid flow via the fluid flow path. The connector is configured to move relative to the valve seat in response to a threshold pressure within the fluid flow path to allow the fluid to flow via the fluid flow path. A flow sensor sub-assembly for sensing flow of a fluidic medicament may include a priming valve and at least one sensor of a fluid port configured to characterize at least one attribute of a fluid within an administrable fluid source. A method for readying a fluid sensor may use a priming valve.

Abstract: To provide a clamp-on type ultrasonic flow sensor capable of calculating a flow rate of fluid flowing in a pipe. An elastic couplant 114 is supported on a pipe P by a clamp member 130 such that a pipe contact section T1 is in contact with the pipe P. The pipe contact section T1 is surrounded by a damping material 116 between the clamp member 130 and the pipe. An elastic couplant 124 is supported on the pipe by a clamp member 140 such that a pipe contact section T2 is in contact with the pipe. The pipe contact section T2 is surrounded by a damping material 126 between the clamp member 140 and the pipe. The clamp members 130 and 140 are coupled to each other to sandwich the pipe in a state in which the clamp members 130 and 140 respectively press the damping materials 116 and 126.

Abstract: To provide a flow meter capable of easily acquiring, with a simple configuration, an integrated value of a flow rate in every flow of fluid intermittently flowing in a pipe. A flow-rate measuring section 302 measures a flow rate of fluid flowing in a pipe. A value of the flow rate integrated from a point in time when the integration of the flow rate is started to a point in time when the integration of the flow rate is stopped is acquired as an integrated value. A reset section 306 resets the integrated value from a point in time when the integrated value is acquired to a point in time when the next first switching is determined.