An electronic flow meter that is configured to use localized flow conditions to determine volumetric flow. The embodiments may include a body forming a pass-through channel and a by-pass channel; a semiconductor device comprising a sensor disposed proximate the by-pass channel, the sensor configured to generate a signal with data that reflects localized pressure and localized temperature of a stream in the by-pass channel; and a processing component coupled with the sensor to receive and process the signal so as to identify a flow condition for the stream, select a calculation for volumetric flow rate in response to the flow condition, use data for localized pressure and localized temperature in the calculation to generate a value for the volumetric flow rate; and generate an output with data that reflects the value for the volumetric flow rate.

A transducer apparatus comprises a deformation body as well as, positioned on the deformation body and connected therewith by material bonding, a radio sensor having a surface facing away from the deformation body. The radio sensor is adapted to receive free-space electromagnetic waves and to convert them into acoustic surface waves propagating along the surface facing away from the deformation body, or to convert acoustic surface waves propagating along the surface into free-space electromagnetic waves. Additionally, the deformation body is adapted as a function of a mechanical force acting thereon, and/or as a function of a temperature change, to be at least partially deformed, in such a manner that at least the surface of the radio sensor facing away from the deformation body experiences a shape change influencing a propagation of acoustic surface waves propagating along the surface. A measuring system formed by means of such a transducer apparatus comprises additionally a measuring electronics electrically coupled with the transducer apparatus and adapted to generate at least one electrical driver signal feeding and/or activating the transducer apparatus and to couple such into the transducer apparatus, and to receive and to evaluate a measurement signal delivered from the transducer apparatus.

A system and method for monitoring a dispensed fluid jet with an oscillation nozzle, comprising a main channel and at least one secondary channel surrounding the main channel, wherein the nozzle has an inlet and an outlet for an air flow defining a flow axis running centrally through the main channel, characterized in that the secondary channel comprises a drill hole.

A menu navigation engine that enables user configuration of a vortex flowmeter. The vortex flowmeter includes a memory device and a processor, among other hardware components. Software instructions stored on the memory device and executable by the processor implement the menu navigation engine by displaying use case identifiers on the user interface, receiving selections of use case identifiers via the user interface, generating a formatted hierarchical tree of vortex flowmeter configuration nodes associated with the selected use case, and displaying the generated tree on the user interface.

A flow measuring device operating on the vortex counter principle, comprises: a measuring tube; a blockage in the form of a bluff body in the measuring tube for bringing about a Karman vortex street with flow dependent vortex frequency; a first pressure fluctuation measuring arrangement for registering vortex related pressure fluctuations and for providing signals dependent on pressure fluctuations; a second pressure fluctuation measuring arrangement for registering vortex related pressure fluctuations and for providing signals dependent on pressure fluctuations. The first pressure fluctuation measuring arrangement is spaced in the longitudinal direction of the measuring tube from the second pressure fluctuation measuring arrangement. An evaluating unit for determining a vortex frequency and a flow measured value dependent thereon, and the evaluation unit is further adapted, based on the ratio of the amplitudes of the signals of the first pressure fluctuation measuring arrangement and the second pressure fluctuation measuring arrangement, or variables derived therefrom, to determine the current Reynolds number and/or the kinematic viscosity of the medium flowing in the measuring tube.

The present invention provides a new and unique apparatus featuring a signal processor or processing module configured to: receive signaling containing information about a fluid flow passing through a pipe that is channelized causing flow variations in the fluid flow; and determine corresponding signaling containing information about a fluid flow characteristic of the fluid flow that depends on the flow variations caused in the fluid flow channelized, based upon the signaling received. The signal processor or processing module may be configured to provide the corresponding signaling, including where the corresponding signaling contains information about the fluid flow characteristic of the fluid flow channelized.

A method evaluates a frequency spectrum representative of at least one time-dependent signal, the at least one time dependent signal being derived from an output from a measuring device under predetermined measuring device operating conditions. The time-dependent signal, includes a portion being representative of a wanted signal, and a portion being representative of noise. The method includes the steps of determining, based on the frequency spectrum of the signal, a value representative of the noise floor, identifying, based on the frequency spectrum of the signal derived under the predetermined operating condition, a peak component, and if the peak component satisfies a relative peak criterion determined on the basis of the determined value representative of the noise floor, determining the wanted signal by applying a predetermined algorithm. The invention further relates to a method for determining flow of a measuring device, and a sensor.

An insertion-type flowmeter adapted for removable insertion into a fluid conduit includes an elongate body having a flow opening and a vortex-generating element disposed within the flow opening at distance from the opening entry that is correlated to the size of the flow opening to define a flow conditioning space in the flow opening between the opening entry and the vortex-generating element.

A device and a method for determining the flow velocity of a fluid in a hollow body, including at least one disturbance device disposed in the hollow body and at least one sensor for identifying disturbances that are induced in the flow by the disturbance device, which is disposed at a certain distance downstream in the direction of flow from the disturbance device, wherein the disturbance device includes means for generating changeable disturbances in the fluid flow.

A flow meter for measuring the flow velocity of a fluid includes a measurement tube that is axially bounded by at least one flange end and that forms a measurement space that can be flowed through by the fluid. At least one baffle is provided for generating interference in the flow, wherein the baffle is arranged in the measurement space. A detector for detecting the interference is arranged downstream of the baffle. An insertion element is introduced into the measurement tube and has a base portion. The base portion is arranged in the flange end. The insertion element has brackets that adjoin the base portion and that project into the measurement space, with the baffle being formed and its position in the measurement space being held between the brackets.