Abstract: The measuring system includes a transducer apparatus with two tubes. Each tube is adapted to be flowed through by a fluid from an inlet end toward an outlet end and to be caused to vibrate. An electromechanical exciter mechanism excites and maintains mechanical oscillations of each of the tubes, and a sensor arrangement registers mechanical oscillations of at least one of the tubes. The transducer apparatus includes two temperature sensors each being mechanically and thermally conductively coupled with a wall of the tube, wherein each of the temperature sensors registers a measuring point temperature, and converts such into a temperature measurement signal temperature. A measuring and operating electronics (ME) generates a transducer temperature measured value representing a transducer apparatus temperature so that a magnitude of the transducer temperature measured value is greater than a magnitude of the measuring point temperature and less than a magnitude of the measuring point temperature.

Abstract: A flow meter for calculating fluid flow rate and/or volume includes a flow cell shaped to define an internal passageway through which the fluid travels, and four separate transducer assemblies independently mounted within mounts in the flow cell in fluid communication with the internal passageway. Each transducer assembly includes a transducer, a transducer stud with a recess in its front surface that is dimensioned to receive the transducer, and a sensor plate mounted onto the stud for retaining the transducer in the recess. A bore extends vertically through the transducer stud and into communication with the recess, the bore being dimensioned to receive wiring for the transducer. The separation and independent mounting of the four transducer assemblies in the flow cell minimizes the disruption of normal fluid flow through the internal passageway, thereby enabling greater accuracy of measurements to be achieved.

Abstract: A measuring device has at least one ultrasonic transducer and an evaluator for evaluating a measurement signal provided by the at least one ultrasonic transducer. The evaluator is set up to determine a first comparison signal, by comparing the measurement signal with a first switching threshold, and a second comparison signal, by comparing the measurement signal with a second switching threshold which is different from the first switching threshold, and to determine a signal amplitude of the measurement signal depending on the first and second comparison signal.

Abstract: A pesticide volume meter for a pesticide spray system comprises a flow sensor, which measures a flow rate of a pesticide dispensed by the pesticide spray system. The pesticide volume meter also comprises a memory and a control unit. The control unit determines a volume of pesticide dispensed by the pesticide spray system based on the measured flow rate, and stores the determined volume in the memory.

Abstract: The invention relates to a fluid flow meter comprising a measuring section for a flow indicator with different measuring methods for flow velocity and fluid flow rate, comprising a housing with an inlet channel, an outlet channel and at least one flow indicator located therein, a housing interior space forming a shape which is complementary to the geometry of the flow indicator, and comprising two bottoms at least partially defining the interior space, and a curved part having a geometry that ensures the formation of a flow, at least one ultrasonic flow indicator being arranged such that the measuring section thereof runs through an inner part of the other flow indicator with another operating mode, and the fluid flow meter comprises an adaptor unit for adapting different diameters of an outlet of the flow indicator and the outlet channel thereof.

Abstract: A physical quantity measurement device that measures a physical quantity of a fluid has an inflow port and an outflow port, and includes a passage flow channel, a branch flow channel, and a physical quantity detector. An inner peripheral surface of the passage flow channel extends over a pair of facing surfaces, which face each other across the flow passage boundary portion and the inflow port on an upstream side of the flow channel boundary portion. The inner peripheral surface further includes an inflow step surface which forms a step facing the inflow port side.

Abstract: Embodiments include a multiphase flowmeter system (300). The multiphase flowmeter system (300) may include a first inline flow conditioner (310) for reducing a slip velocity between a liquid phase and a gas phase of a multiphase fluid, a flowmeter for measuring a flow rate of the multiphase fluid, a second inline flow conditioner (350) for separating the liquid phase and the gas phase of the multiphase fluid, a non-radioactive sensor system for measuring one or more of a gas void fraction of the multiphase fluid and a water-cut of the multiphase fluid, and a processor (480) for computing one or more flow rates of the multiphase fluid. Embodiments further include methods of measuring one or more flow rates of a multiphase fluid and other related methods, apparatuses, devices, and systems.

Abstract: A system for measuring a velocity or volumetric fluid flow rate of a fluid flow passing within a pipe includes a SONAR flow meter configured to determine a measured velocity or volumetric rate of a fluid flow passing within a pipe. The system further includes a CFD analysis device configured to produce a simulated velocity or volumetric rate of the fluid flow passing within the pipe. The system further includes a processing unit in communication with the CFD analysis device and the SONAR flow meter. The processing unit is configured to produce at least one error function based on the measured velocity or volumetric fluid flow rate and the simulated velocity or volumetric fluid flow rate, and is configured to determine an adjusted velocity or volumetric fluid flow rate using the at least one error function and the measured velocity or volumetric fluid flow rate.

Abstract: A method of inferring fluid flow speed through a passage comprises receiving a first signal having a frequency and phase corresponding to that of a first ultrasonic wave detected after passing through the fluid in a direction with a component opposed or aligned to a main direction of the fluid's flow. Receiving a second signal having a frequency and phase corresponding to that of a second ultrasonic wave detected after passing through the fluid in a direction with a component different to that of the first ultrasonic wave with respect to the main direction of the fluid's flow. Inferring the fluid flow speed through the passage based on the relative phase shift between the first and second signals.

Abstract: A flow measurement apparatus comprising an elongated mounting stem having an inner stem cavity, the mounting stem configured to be mounted in an area of flow to be measured. A probe housing is mounted to an outer surface of the mounting stem and positioned on an upstream side of the mounting stem. The probe housing has a first hole near a center point of the housing and a second, third and fourth hole positioned near the perimeter of the housing. A fifth hole is located on a downstream side of the mounting stem. At least five pressure sensors and a plurality of pressure tapping tubes connecting the holes to the corresponding pressure sensors are included.

Abstract: An ultrasonic measuring device for the measurement of a flow of a fluid, includes a measuring tube, a first chamber and a second chamber. The measuring tube has a central axis, which defines a flow direction for the fluid; The first chamber has a first ultrasonic transducer arranged therein. The second chamber has a second ultrasonic transducer arranged therein. The measuring tube includes an inlet and an outlet for the fluid. The first ultrasonic transducer and the second ultrasonic transducer bound a rectilinear measuring section for the fluid, the first chamber and the second chamber being configured and arranged such that the fluid is capable of flowing around each of them. The first ultrasonic transducer and the second ultrasonic transducer are arranged such that the measuring section extends in the flow direction.

Abstract: Vibration-based flowmeters are useable in inaccessible nuclear reactor spaces. Pipe-organ-type flowmeters include a passage with an opening constricted, and subsequent widening section. An extension and outlet that create turbulence in the flow at the outlet create a standing wave and vibration in the extension and/or entire flowmeter. A flow rate of the fluid through the flowmeter can be calculated using length of the passage and/or known properties of the fluid. Multiple flowmeters of customized physical properties and types are useable together.

Abstract: A system includes a flow sensor contained within a flow sensor housing, a base, and a seal. The base houses a controller that generates at least one operation modification signal, and the flow sensor is separable from and mountable onto the base. A bottom surface of the flow sensor housing includes the seal. The seal forms a liquid-tight engagement between the flow sensor housing and the base when the flow sensor is mounted onto the base.

Abstract: A consumption meter arranged to measure a flow rate of a fluid, comprising: a tube with for passage of the fluid between an inlet and an outlet, multiple individual flow meters arranged at the tube to measure a sub-flow rate of the fluid, a first control circuit and communication interface arranged for receiving the measured sub-flow rate from each of the multiple flow meters, and being arranged to generate a signal indicative of the flow rate of the fluid according to the received sub-flow rates, each of the multiple individual flow meters comprising: a flow meter housing arranged at the tube; first and second ultrasonic transducers arranged in the flow meter housing for transmitting and receiving ultrasonic signals propagating through the fluid; a second control circuit arranged for operating the first and second ultrasonic transducers, and being arranged to generate the signal indicative of the sub-flow rate of the fluid accordingly; and a communication interface arranged for transmitting the signal indica

Abstract: A device for monitoring underwater surface overflow seepage of a landslide includes an underwater seepage monitor arranged on an underwater sliding mass, the underwater seepage monitor includes a bearing housing, a flow guide pipe, a silt discharging cover plate and a silt discharging mechanism, the silt discharging mechanism driving the silt discharging cover plate to be switched between a blocking position and an opening position. Considering complex environmental factors, a multifunctional flow monitor is embedded into a sliding mass and surrounds an outlet of the underwater landslide seepage. A silt discharging hole is provided in the bearing housing, the silt discharging mechanism is configured to drive the silt discharging cover plate to be located at the opening position, and silt in the bearing housing may be discharged from the silt discharging hole, such that the problem of silt deposition caused by overflow seepage of an underwater landslide is solved.

Abstract: The present invention provides for a method for operating an electromagnetic flowmeter capable of being mounted on to a surface of a flow pipe for measuring a flow of fluid flowing in the flow pipe. The method comprising: exciting the coil to have electromagnetic interaction with the fluid in the flow pipe resulting in leakage current; providing a current to compensate for the resulting leakage current in the flow pipe by applying a potential difference to electrodes that are attached to a housing of the electromagnetic flowmeter and in contact with the flow pipe; detecting a condition wherein the resulting current flowing is within a threshold range; and determining a measure of flow in the flow pipe based on a value of the applied potential difference.

Abstract: A separation type multiphase flow meter apparatus (10) comprising a separation module (18) arranged to at least partially separate a multiphase stream comprising water, hydrocarbon liquid and hydrocarbon gas into a first sub-stream comprising a gas fraction and a second sub-stream comprising a liquid fraction. The apparatus comprises a first metering device (16) for measuring the flow rate of the first sub-stream, and a second metering device (17) for measuring the phase fraction and the flow rate of the second sub-stream, wherein the second metering device is arranged to measure the water-in-liquid ratio (WLR) of the second sub-stream, wherein the apparatus is arranged to use the WLR measured by the second metering device as a measure also for the WLR of the first sub-stream, and wherein the cross-sectional flow area of the first metering device is larger than the cross-sectional flow area of the second metering device.

Abstract: An electromagnetic measuring device includes a hydraulic body defining a duct for a flow of a liquid, and a flow sensor on the hydraulic body that includes an electromagnetic arrangement for generating an electromagnetic field through the duct in a direction transverse to the flow of the liquid, and detection arrangement including two electrical detection elements for detecting a potential difference induced by the flow of the liquid through the electromagnetic field. The detection elements are associated to one and the same face of a substrate, which extends on the outside of the duct in a position corresponding to a first side of the duct. The first side of the duct has two through openings, each of which is in a position corresponding to a respective electrical detection element.

Abstract: The application discloses a time-of-flight generating circuit, coupled to a first transducer and a second transducer, wherein there is a distance greater than zero between the first transducer and the second transducer, and a fluid having a flow speed flows sequentially through the first transducer and the second transducer, wherein the time-of-flight generating circuit includes: a transmitter, coupled to the first transducer; a receiver, coupled to the second transducer; a signal processing circuit, coupled to the transmitter and the receiver; and a correlation circuit, a measuring circuit and a transformation circuit, coupled to the signal processing circuit. The application also discloses a chip, flow meter, and method of the same.

Abstract: A magnetic-inductive flowmeter with a measuring tube for guiding an electrically conductive medium, a magnetic circuit device running outside the measuring tube for generating and guiding a magnetic field through the measuring tube, and two electrodes for tapping a measuring voltage induced in the medium. The magnetic circuit device has at least a first coil for generating the magnetic field and first and second pole piece plates, the magnetic field being formed between the pole piece plates, wherein the measuring tube is arranged between the two pole piece plates and wherein the electrodes are arranged on opposite sides of the measuring tube, an imaginary connecting line between the two electrodes running perpendicular to the direction of flow and perpendicular to the direction of the magnetic field. The magnetic field is fed into the pole piece plates by at least two feed-in regions per pole piece plate.