Entries |
Document | Title | Date |
20080236297 | Acoustically compatible insert for an ultrasonic probe - A probe system for measuring fluid flow in a conduit, such as a blood vessel with ultrasound transit time or similar measurement methods. The probe system having a probe body with a space to receive in a secure but detachable fashion a pliable soft insert. The insert has a central lumen or aperture which is sized to securely but detachably fit around a vessel or conduit without squeezing or in any way altering the conduit during application or use. The insert is acoustically matched with the vessel or conduit and fluid flowing therein to thereby minimize distortion or attenuation of ultra sound waves generated to assess flow. In a further aspect a set of inserts with varying sized lumens or apertures are provided to match with vessels or conduits of varying size. The system among other things increases accuracy of flow measurements while minimizing trauma to the vessel or conduit. | 10-02-2008 |
20080271544 | Plastic Ultrasonic Measurement Section and Corresponding Measurement Method - The present invention relates to a plastic ultrasonic measurement section ( | 11-06-2008 |
20090019945 | Ultrasonic Flowmaster - In an ultrasonic flowmeter of the time difference type using annular ultrasonic transducers, to obtain an accurate flow volume without correction by actual flow, from theoretical formulas which are taking properties of the fluid such as density, and dimension, and properties of the measuring tube into consideration. | 01-22-2009 |
20090044636 | METHOD AND DEVICE FOR RECORDING CHARACTERISTIC STATE, AMOUNT AND COMPOSITION OF A FLOWING MEDIUM - Method and device that by acoustic signal energy- generated by a flowing medium, detects characteristic properties, amounts and the individual distribution between several components/phases, i.e. liquids, gases, particles or any distribution individual and between these. The flowing medium is decided to pass through at least one in a pipe system installed flow conditioner that has at least one restriction and by said passing is decided to release acoustic signal energy. The flow conditioner is installed in such a way that it in an acoustic and/or thermal way is totally or partly isolated from upstream and downstream adjoining sections of the pipe system and/or surrounding construction details. | 02-19-2009 |
20090100940 | Apparatus For Determining And/Or Monitoring Volume- And/Or Mass-Flow - An ultrasonic flow measuring device for determining and/or monitoring volume- and/or mass-flow of a measured medium through a pipeline or measuring tube. The wall of the pipeline or measuring tube is provided, in the region of the defined sensor position of the ultrasonic sensor and/or in the region of the sound path of the ultrasonic measuring signals of the at least one ultrasonic sensor, with a deformation or deformations, which is/are embodied and/or arranged in such a manner that the flow velocity of the medium measured in the sound path, or, in the case of plural ultrasonic sensors, the measured and/or the combined flow velocities of the medium in the sound paths correspond/corresponds at least approximately to average flow velocity of the medium averaged over the area of the pipeline or measuring tube. | 04-23-2009 |
20090114037 | Photo-Acoustic Flow Meter - A photo-acoustic flow meter for use in dialysis is described, that uses an optical beam to generate an acoustic signal in the fluid for which the flow rate is to be measured. The phase angle of the acoustic signal changes when traversing upstream and when traversing downstream. The phase difference between the acoustic signals received upstream and downstream, compared with a reference source signal is measured, and it yields the flow rate of the fluid. | 05-07-2009 |
20090249888 | Device for Determining a Mass Flow - A device is provided for determining a mass flow of a first gas flowing in a flowing channel of an internal combustion engine of a motor vehicle. The device includes: sound transducers arranged at respective ends of a measuring path for providing sound signals, a temperature sensor for determining a temperature of an overall mass flowing in the flow channel, and an evaluation unit arranged downstream of the sound transducers. The evaluation unit is capable of carrying out the following: determining a flow rate of the overall mass and a speed of sound based on delay times of the sound signals, determining an overall mass flow based on the flow rate, the temperature, and a pressure of the overall mass in the flowing channel, ascertaining a proportion of a second gas flowing in the flow channel at a temperature above 10° C. and based on the speed of sound and the temperature, and correcting the overall mass flow to obtain the mass flow of the first gas. | 10-08-2009 |
20090249889 | ULTRASONIC FLOWMETER - An ultrasonic flowmeter includes two ultrasonic transceivers. Each of the ultrasonic transceivers includes a cylindrical transmitting body closely fixed to the outer peripheral surface of a measurement pipe through a fluid flows so as to surround the measurement pipe, and an ultrasonic transducer surrounding the measurement pipe and spaced apart from the outer peripheral surface of the measurement pipe. The transmitting body is made of a rubber material and has axial end surfaces extending perpendicular to the axis of the measurement pipe. The axial end surface of the ultrasonic transducer is fixedly secured to the axial end surface of the transmitting body, and the ultrasonic transducer is extended and contracted in the axial direction thereof by applying a voltage between the axial end surfaces of the ultrasonic transducer. | 10-08-2009 |
20090288496 | Acoustic Arrangement - The invention concerns a flow metering techniques, which applies acoustic means and/or methods as embodied for an acoustic flow metering arrangement according to the invention. The flow metering can be implemented with an acoustic flow meter arrangement, which comprises a measuring section ( | 11-26-2009 |
20100000331 | APPARATUS FOR ATTENUATING ULTRASONIC WAVES PROPAGATING WITHIN A PIPE WALL - A damping device for a fluid flow meter is provided. The fluid flow meter is mountable on the exterior of a pipe to meter fluid flow traveling within the pipe. The flow meter has at least one ultrasonic sensor operable to transmit ultrasonic signals through a wall in a direction substantially normal to the pipe wall and into a fluid flow disposed within the pipe. The transmitted signals create secondary ultrasonic signals circumferentially traveling within the pipe wall at one or more frequencies. The damping device includes a tuned body attachable to the pipe wall at one or more contact points. The body has one or more resonant structural modes, each with a natural frequency, which natural frequencies are closely matched to the one or more frequencies of the secondary signals. The body is operable to dissipate energy upon excitation by the secondary signals. | 01-07-2010 |
20100011880 | FLOW MEASUREMENT SYSTEM AND METHOD USING ENHANCED PHASE DIFFERENCE DETECTION - A flow measurement system and method uses enhanced phase detection based on a ratio of amplitudes of summations of two oppositely propagating acoustic signals. A need for direct time measurement and extensive difference calculation is consequently avoided so that in some implementations compact, simple, low power analog circuitry can be used. | 01-21-2010 |
20100095782 | METHOD AND APPARATUS FOR DETERMINING THE FLOW PARAMETERS OF A STREAMING MEDIUM - According to the method longitudinal waves are generated in a transducer used only as a transmitter connected from outside to a conduit. These waves are transmitted along two diagonal paths through the streaming medium in an upstream and a downstream direction, and received by two transducers used only as receivers which are located in a diagonal upstream and downstream position and on an opposite side relative to the transducer used as a transmitter, also connected to the conduit. A transit time value of the waves between the transducer used as a transmitter and each of the transducers used as receivers is determined. A difference value on the basis of the determined transit time values is generated and the flow parameters are determined on the basis of said difference value. This measuring method is highly independent of the propagation velocity of the wave in the medium streaming in the conduit therefore also independent of the temperature and humidity of a gaseous medium. An apparatus and a conduit for use in the apparatus for performing the method is also suggested. The conduit used in the apparatus comprises a first location for receiving a transmitter in a middle region of the measuring area and two second locations for receiving receivers in a border region of the measuring area opposite to the first location. The wall of the conduit is dimensioned so that the longitudinal waves can pass through it with minimal loss and maximum efficiency. The inner wall of the conduit forms a uniform and continuos surface for the transmission of the longitudinal waves between the transmitter and the receivers and for blocking the passage of any organic or inorganic material. In medical applications the apparatus and its housing is configured to receive, hold and release a sterile conduit. | 04-22-2010 |
20100107777 | ULTRASONIC FLOW MEASUREMENT SYSTEM AND METHOD - An ultrasonic measurement system for measuring a flow in a conduit. Spaced ultrasonic signal transmitters are configured to launch a ultrasonic beams having a center axis of maximum intensity. Receiving transducers are configured to receive modulated signal energy from the beams and are located off the center axis of the beams to increase the modulation of the signal energy and to produce receiver output signals. A processing subsystem is configured to correlate the receiver output signals to determine a time delay indicative of the flow velocity in the conduit. | 05-06-2010 |
20100139415 | Method for Monitoring an Ultrasound Flowmeter System and/or Process - A method for system- and/or process-monitoring in the case of an ultrasound flow measuring device having a plurality of measuring channels, wherein a medium flows though a pipeline or measuring tube in the direction of a longitudinal axis of the pipeline or measuring tube. Ultrasonic measuring signals are coupled into the pipeline or measuring tube and coupled out of the pipeline or measuring tube in such a way that they travel through the medium along different sound paths. Following passage through the pipeline or measuring tube, the ultrasonic measuring signals are detected in the individual measuring channels, wherein at least one actual quantity describing the ultrasonic measuring signal of each measuring channel is ascertained. The actual quantity is compared with a desired quantity captured under predetermined system- or process-conditions, and a report is output in the case of a difference between the ascertained, actual quantity and the captured, desired quantity. | 06-10-2010 |
20100192703 | FLOW MEASURING APPARATUS USING TUBE WAVES AND CORRESPONDING METHOD - Methods of measuring flow properties and flowmeters having an upstream transceiver and a downstream wave transceiver, each positioned with a wave emitting surface exposed to a fluid flowing in a conduit are described, the transceiver being separated by a length L along the conduit and adapted to receive wave signals traveling in flow direction and opposite to the flow direction, respectively, and an electronic processor for extracting from travel time measurements of the wave signals flow characterizing parameters, the transceivers being adapted to generate tube waves, particularly in the audible frequency range, in the conduit and used to determine the travel time of the tube waves between the upstream transceiver and the downstream wave transceiver. | 08-05-2010 |
20100218618 | DOPPLER TYPE ULTRASONIC FLOW METER, FLOW METERING METHOD, AND COMPUTER PROGRAM - Provided is a technique for performing a precise flow rate measurement of a large-bore pipeline without causing any aliasing. Ultrasonic pulses are transmitted at a first repetition frequency and at a second repetition frequency different from the first one, and a fluid velocity distribution measuring means measures a first flow velocity distribution for the first repetition frequency and a second flow velocity distribution for the second repetition frequency. A flow rate calculating means specifies either a first noise-superposed area to occur with the first repetition frequency or a second noise-superposed area to occur with the second repetition frequency, and calculates the flow velocity distribution either by eliminating the noise-superposed area from the first flow velocity distribution and interpolating it with the second flow velocity distribution or by eliminating the second noise-superposed area from the second flow velocity distribution and interpolating it with the first flow velocity distribution. | 09-02-2010 |
20100251829 | APPARATUS AND METHOD FOR MEASURING A FLUID FLOW PARAMETER WITHIN AN INTERNAL PASSAGE OF AN ELONGATED BODY - A method and apparatus for measuring at least one parameter of a fluid flowing through an internal passage of an elongated body is provided. The internal passage is disposed between a first wall and a second wall, and the first wall and the second wall each include an interior surface and an exterior surface. The method includes the steps of providing an array of at least two ultrasonic sensor units, operating the sensor units to transmit ultrasonic signals at one or more frequencies substantially coincident with at least one frequency at which the transmitted ultrasonic signals resonate within the first wall, receiving the ultrasonic signals with the sensor units, and processing the received ultrasonic signals to measure the at least one parameter of fluid flow within the internal passage. | 10-07-2010 |
20100257941 | APPARATUS FOR ATTENUATING ULTRASONIC WAVES PROPAGATING WITHIN A PIPE WALL - A damping device for a fluid flow meter mountable on the exterior of a pipe to meter fluid flow traveling within the pipe is provided. The flow meter has at least one ultrasonic sensor operable to transmit ultrasonic signals through a pipe wall in a direction normal to the pipe wall and into a fluid flow disposed within the pipe, which signals create secondary ultrasonic signals circumferentially traveling within the pipe wall at a frequency. The damping device includes a base and a plurality of tines. The base is conformable to an exterior surface of the pipe wall, and has a pipe-side surface and a tine-side surface. The plurality of tines is attached to the base and extends outwardly from the tine-side surface. Each tine is spaced apart from an adjacent tine by a tine-to-tine distance that is less than the wavelength of the secondary ultrasonic signals circumferentially propagating within the pipe wall. | 10-14-2010 |
20100257942 | Transducer Having a Robust Electrical Connection to a Piezoelectric Crystal - An embodiment of a piezoelectric assembly for an ultrasonic flow meter comprises a piezoelectric element including a first face and a second face. In addition, the piezoelectric assembly comprises a first electrode engaging the first face. Further, the piezoelectric assembly comprises a second electrode engaging the second face. Still further, the piezoelectric assembly comprises an electrically conductive shim connector attached to the first electrode. Moreover, the piezoelectric assembly comprises a first wire electrically coupled to the shim connector. | 10-14-2010 |
20100288055 | TRANSIT TIME CORRECTION IN A FLOW SENSOR - A sensor measures a flow quantity of a medium using a first wave converter and a second wave converter which faces the first wave converter, each of which emits and receives sound waves, and a device calculates the flow quantity on the basis of a first wave transit time from the first wave converter to the second wave converter, and on the basis of a second wave transit time from the second wave converter to the first wave converter. The device includes a unit for limiting the change to the flow quantity. In this manner, and the measurement may be carried out more accurately. | 11-18-2010 |
20100313676 | ADJUSTING TRANSDUCER FREQUENCY WITHOUT CEASING FLUID FLOW THROUGH A METER - A method comprises, without ceasing flow of fluid through a flow meter, transmitting an ultrasonic signal of a first frequency through the fluid, adjusting the first frequency to a second frequency, and transmitting another ultrasonic signal of the second frequency through the fluid. | 12-16-2010 |
20100319464 | ULTRASONIC FLOWMETER - It is desirable that an operation of an oscillator used for measuring propagation time of ultrasonic waves in an ultrasonic flowmeter be an intermittent operation in order to achieve electric power savings. However, pulse stability of the oscillator requires time, so that there is a problem that the intermittent operation cannot be performed. An ultrasonic flowmeter comprising an oscillator | 12-23-2010 |
20100319465 | METHOD AND APPARATUS FOR DETERMINING FLOW - The present invention relates to the field of pollution monitoring equipment and in particular to aspirated particle detector systems, which detect particles in air sampled from a number of locations. The present invention provides a method and apparatus for determining flow in an aspirated particle detector system, said system comprising a plurality of carriers in fluid communication with a particle detector, comprising means for detecting the flow rate in at least one of the carriers comprising sensing a signal transmitted between a first and a second signal transceiver ( | 12-23-2010 |
20110000311 | Augmented Surface Sensor for Measuring Flow Velocity - A system and method for measurement of flow parameters in a sewer pipe that may be partially or completely filled. Flow parameters may include flow velocity, flow volume, depth of flow and surcharge pressure. Measurements are taken from a sensor head installed on the inside of the pipe at the top of the pipe approximately the larger of at least 1 foot or 1 pipe diameter upstream of a pipe opening. Flow velocity may be measured by two different technologies. The technology employed depends on whether or not the pipe is full. If the pipe is not full then flow velocity may be measured, for example, using a wide beam, ultrasonic, diagonally downward looking Doppler signal that interacts with the surface of the flow. If the pipe is full, then flow velocity may be measured using, for example, an average velocity Doppler sensor, a peak velocity Doppler sensor or an ultrasonic velocity profiler. | 01-06-2011 |
20110041621 | ACOUSTIC MATCHING MEMBER, ULTRASONIC TRANSMITTER/RECEIVER, AND ULTRASONIC FLOWMETER - An acoustic matching member, an ultrasonic transmitter/receiver, and an ultrasonic flowmeter, which are capable of measuring a flow rate of a fluid with greater accuracy, are provided. | 02-24-2011 |
20110072910 | FLOW METER FOR USE IN A FLOWING FLUID MEDIUM - A flow meter for use in a flowing fluid medium includes at least one ultrasonic transducer and at least one measuring section having at least one flow pipe through which a fluid medium flows in a main direction of flow. The ultrasonic transducer is equipped to emit ultrasonic signals essentially parallel to the main direction of flow into the measuring section. The ultrasonic transducer is separated from the flow pipe by at least one thermal decoupling element. The thermal decoupling element is equipped to reduce heat transfer from the flow pipe to the ultrasonic transducer. | 03-31-2011 |
20110088483 | ULTRASONIC MEASURING ARRANGEMENT - An ultrasonic measuring arrangement ( | 04-21-2011 |
20110094309 | METHOD AND MEASURING SYSTEM FOR DETERMINING AND/OR MONITORING FLOW OF A MEASURED MEDIUM IN A MEASURING TUBE - Measuring system and method for determining and/or monitoring flow of a measured medium through a measuring tube with a first ultrasonic sensor and at least a second ultrasonic sensor, wherein the first ultrasonic sensor has at least one electromechanical ultrasonic transducer element and is placeable in a first region of the measuring tube, and wherein the second ultrasonic sensor has at least two electromechanical ultrasonic transducer elements and is placeable in a second region of the measuring tube in such a manner, that the ultrasonic signals transmittable through the measured medium from the first ultrasonic sensor are receivable by the second ultrasonic sensor, and that the ultrasonic signals transmittable through the measured medium from the second ultrasonic sensor are receivable by the first ultrasonic sensor, and with at least one control/evaluation unit, which, on the basis of the ultrasonic-measuring signals, or on the basis of measurement data, which are derived from the ultrasonic measuring signals, ascertains the volume flow and/or the mass flow of the measured medium flowing in the measuring tube by means of a travel-time difference method. During a diagnostic phase, ultrasonic signals are transmitted from the first ultrasonic sensor through the measured medium to the second ultrasonic sensor, and at least one process variable is ascertained and/or derived from the received ultrasonic signals for each electromechanical ultrasonic transducer element of the second ultrasonic sensor, and the electromechanical ultrasonic transducer elements of the second ultrasonic sensor which are to be active in a following measuring phase are selected on the basis of the process variable of the received ultrasonic signals. | 04-28-2011 |
20110132103 | Flowmeter and method - A flowmeter for detecting fluid flow rates in a pipe includes a tube having a channel disposed in the pipe through which fluid in the pipe flows. The flowmeter includes an upstream transducer in contact with the pipe and positioned so plane waves generated by the upstream transducer propagates through the channel. The flowmeter includes a downstream transducer in contact with the pipe and positioned so plane waves generated by the downstream transducer propagate through the channel and are received by the upstream transducer which produces an upstream transducer signal. The downstream transducer receives the plane waves from the upstream transducer and provides a downstream transducer signal. The flowmeter includes a controller in communication with the upstream and downstream transducers which calculate fluid flow rate from the upstream transducer signal and the downstream transducer signal. A method for detecting fluid flow rates in a pipe. | 06-09-2011 |
20110146414 | Utrasonic transducer, flow meter and method - An ultrasonic transducer for a pipe includes an ultrasonic source which produces plane waves. The transducer includes a housing having a face at least a portion of which is curved through which the plane waves produced from the source disposed in the housing are emitted and directed outward towards the pipe's interior wall so a full cross-section of the pipe's interior can be measured. A flow meter for detecting fluid flow rates in a pipe. A method for detecting fluid flow rates in a pipe. | 06-23-2011 |
20110226068 | ULTRASONIC MEASUREMENT APPARATUS AND METHOD FOR MEASURING THE FLOW VELOCITY OF A FLUID - An ultrasonic measurement apparatus ( | 09-22-2011 |
20110239780 | COUPLING ELEMENT FOR AN ULTRASONIC FLOW MEASURING DEVICE - A coupling element for an ultrasonic, flow measuring device, wherein the coupling element has a pedestal with a bearing surface, on which bearing surface a piezoelement is applied. The pedestal is an integral component of the coupling element. | 10-06-2011 |
20110239781 | Open Channel Meter for Measuring Velocity - A system for measuring flow parameters in a drain pipe which may be partially or completely filled. The system comprises wide band pulsed ultrasonic echo ranging sensor disposed in a lower portion of a pipe with a beam directed generally upward at a predetermined inclined angle. Echo information may be processed to determine contiguous particle traces from the same respective particles in a range vs. time format. Particle velocity may be determined based on trace slope or arc. Average particle velocity from a measurement subset of flow may be used to determine a subset average flow rate, which is then related to total flow rate and total flow average velocity based on one or more models. One embodiment may reflect the beam from the surface of the water to extend coverage near the bottom of the pipe and may avoid an exclusion zone at the bottom of the pipe. | 10-06-2011 |
20110271769 | Flow measuring apparatus - A flow measuring apparatus ( | 11-10-2011 |
20110271770 | MEASURING SYSTEM FOR DETERMINING AND/OR MONITORING FLOW OF A MEASURED MEDIUM THROUGH A MEASURING TUBE BY MEANS OF ULTRASOUND - A measuring tube, a measuring system and a method for determining and/or monitoring flow through a measuring tube, comprising a measuring tube, on which ultrasonic transducers are releasably placeable. The ultrasonic transducers transmit and/or receive ultrasonic signals, which pass through the measuring tube approximately coaxially to the measuring tube axis. | 11-10-2011 |
20120017700 | Measuring tube of a measuring system for determining and/or monitoring flow of a measured medium through a measuring tube by means of ultrasound - A measuring tube, a measuring system and a method for determining and/or monitoring flow through a measuring tube, comprising a measuring tube, on which ultrasonic transducers are releasably placeable. The ultrasonic transducers transmit and/or receive ultrasonic signals, which pass through the measuring tube approximately coaxially to the measuring tube axis. | 01-26-2012 |
20120031199 | ULTRASONIC LIQUID SENSOR APPARATUS AND SYSTEM - An ultrasonic liquid sensor for detecting liquid in a tube having sidewalls includes a first intermediate mounting plate held in physical communication with a first sidewall of the tube, a second intermediate mounting plate held in physical communication with the second sidewall of the tube. The plates are configured to allow the ultrasonic signal to pass therethrough. The sensor also includes a first and a second transducer element. The first and second transducer elements are mounted to the intermediate mounting plates and are configured to receive the ultrasonic signal passing through the sidewalls of the tube as well as the intermediate mounting plates to determine the presence or absence of liquid in the tube. The sensor can be enclosed in a self-contained unit and a support assembly can be used and formed of metal material or non-metal material to interface with the sensor and a secondary circuit. | 02-09-2012 |
20120036942 | STRAIGHT TUBE ULTRASONIC FLOW METER - Provided is a straight tube ultrasonic flow meter capable eliminating error causes in the ultrasonic wave measurement, and having further improved measurement accuracy. A straight tube ultrasonic flow meter ( | 02-16-2012 |
20120096948 | Conditioner, apparatus and method - The present invention pertains to a flow conditioner for displacing and mixing fluid flow to minimize the effects of thermal gradients on the accuracy of a transit time ultrasonic flowmeter and defines an envelope in a cross sectional direction in a pipe having a first ramp adapted to be disposed in the pipe and extending from the outside of the envelope inward toward the center of the pipe in a downstream direction with respect to the fluid flow and forming an angle between 0° and 90° relative to the pipe's inner surface. The conditioner has a second ramp adapted to be disposed in the pipe and in juxtaposition with the first ramp, the second ramp extending from the outside of the envelope inward toward the center of the pipe in an upstream direction with respect to the fluid flow and forming an angle between 0° and 90° relative to the pipe's inner surface. An apparatus for determining fluid flow in a pipe having ultrasonic transducer sites. A method for determining fluid flow in a pipe. A method for affecting fluid flow in a pipe. | 04-26-2012 |
20120118074 | Ultrasonic gas flow measurement device - An ultrasonic gas flow measurement device includes a dumbbell-shaped tube, a first ultrasonic transceiver, a second ultrasonic transceiver, a first cover part, a second cover part and a control unit. The dumbbell-shaped tube includes a central tube part, a first cone part, a first tube part, a second cone part and a second tube part, wherein the first tube part has a flow inlet, the second tube part has a flow outlet, the central tube part connects to the first tube part through the first cone part, and connects to the second tube part through the second cone part. The first ultrasonic transceiver installed inside the first tube part is used for transmitting or receiving ultrasonic signals. The second ultrasonic transceiver installed inside the second tube part is used for transmitting or receiving ultrasonic signals. The control unit is used to control the first and second transceivers. | 05-17-2012 |
20120125121 | Chordal gas flowmeter with transducers installed outside the pressure boundary, housing and method - A flowmeter for detecting gas flow rates in a pipe. The flowmeter includes a container configured to be attached to the pipe having a channel through which the gas flows, and a plurality of recesses. Each recess has a window made of metal that is in acoustic communication with the channel. The flowmeter includes a plurality of transducers, with one transducer of the plurality of transducers disposed in each recess. The transducers transmit ultrasonic signals into and receive ultrasonic signals from the channel through the window in the housing recess in which a transducer is disposed. The flowmeter includes a controller in electrical communication with the plurality of transducers which determines the gas flow rate through the channel from signals received from the transducers. A housing for an ultrasonic transducer for a flowmeter which is inserted into a recess of a container. A method for detecting gas flow rates in a pipe. A transducer for an ultrasonic flowmeter. | 05-24-2012 |
20120125122 | Chordal gas flowmeter with transducers installed outside the pressure boundary, housing and method - A flowmeter for detecting gas flow rates in a pipe includes a container configured to be attached to the pipe having a channel through which the gas flows, and a plurality of recesses that extend through the container and a plurality of housings. Each recess has a housing which contains pressure in the channel. Each housing has a window that is in acoustic communication with the channel. The flowmeter includes a plurality of transducers, with one transducer of the plurality of transducers disposed in each recess. The transducers transmit ultrasonic signals into and receive ultrasonic signals from the channel through the window in the housing in which a transducer is disposed. The flowmeter includes a controller in electrical communication with the plurality of transducers which determines the gas flow rate through the channel by measuring transit times of signals transmitted by and received by the transducers. A housing for an ultrasonic transducer for a flowmeter which is inserted into a recess of a container that acoustically isolates the housing from the container. A method for detecting gas flow rates in a pipe. A transducer for an ultrasonic flowmeter. | 05-24-2012 |
20120144930 | FLOW METER ASSEMBLY, GATE ASSEMBLIES AND METHODS OF FLOW MEASUREMENT - The present invention provides an acoustic flow meter assembly ( | 06-14-2012 |
20120216627 | Ultrasonic Transducer, Flow Meter and Method - An ultrasonic transducer for a pipe includes an ultrasonic source which produces plane waves. The transducer includes a housing having a face at least a portion of which is curved through which the plane waves produced from the source disposed in the housing are emitted and directed outward towards the pipe's interior wall so a full cross-section of the pipe's interior can be measured. A flow meter for detecting fluid flow rates in a pipe. A method for detecting fluid flow rates in a pipe. | 08-30-2012 |
20120222492 | ULTRASONIC FLOWMETER HAVING PRESSURE BALANCING SYSTEM FOR HIGH PRESSURE OPERATION - A system is provided with an ultrasonic flow meter. The ultrasonic flow meter includes a first ultrasonic transducer disposed about a fluid flow path, and a pressure balancing system configured to pressure balance the first ultrasonic transducer relative to a fluid flow along the fluid flow path. | 09-06-2012 |
20120222493 | SYSTEM AND METHOD FOR PRESSURE BALANCING A FLOW METER - A system is provided with a pressure balancing system configured to protect a flow meter. The pressure balancing system includes a housing configured to surround a fluid conduit to define a fluid chamber around the fluid conduit. The fluid chamber is configured to house the flow meter. The pressure balancing system is configured to at least substantially balance fluid pressure internal and external to the fluid conduit via the fluid chamber. | 09-06-2012 |
20120266691 | CHANNEL MEMBER AND ULTRASONIC FLUID-MEASURING APPARATUS - Provided are a channel member and an ultrasonic fluid-measuring apparatus that can prevent the disturbance from occurring in the ultrasonic waves due to disturbance of a fluid. A channel member ( | 10-25-2012 |
20120272750 | ULTRASONIC FLUID-MEASURING STRUCTURE AND ULTRASONIC FLUID-MEASURING APPARATUS - Provided are an ultrasonic fluid-measuring apparatus and an ultrasonic fluid-measuring apparatus that can prevent the disturbance from occurring in the ultrasonic waves due to disturbance of a fluid. An ultrasonic fluid-measuring structure includes an ultrasonic measuring section adjacent to a channel member. The channel member includes a first ultrasonic wave input/output section and a second ultrasonic wave input/output section provided in a first side wall part, and a reflecting surface provided on an inner surface of the second side wall part. Further, it is configured so that the first ultrasonic wave input/output section and the second ultrasonic wave input/output section are adjacent to each other, and an ultrasonic wave transmission membrane through which the ultrasonic waves pass covers together both the first ultrasonic wave input/output section and the second ultrasonic wave input/output section. | 11-01-2012 |
20130118272 | ULTRASONIC TYPE FLOW SENSOR - First and second piezoelectric transducers | 05-16-2013 |
20130167656 | FLOW-RATE MEASUREMENT DEVICE - A flow-rate measurement device includes a first transducer and a second transducer which are provided in a fluid flow path to transmit and receive an ultrasonic signal, a timer unit which measures a propagation time of the ultrasonic signal propagating between the first transducer and the second transducer, and a flow-rate calculation unit which executes a unit measurement step a predetermined number of times and calculates a flow rate of a fluid flowing in the fluid flow path on the basis of the propagation times measured the predetermined number of times, the unit measurement step being an operation in which a direction of transmission to reception between the first transducer and the second transducer is switched and the timer unit measures the propagation times of the ultrasonic signal in both directions. The flow-rate calculation unit measures a flow rate value of the fluid by a precise measurement step in which the unit measurement step is executed a plural number of times to calculate the flow-rate and an exploratory measurement step in which the unit measurement step is executed a smaller number of times than the number of executions in the precise measurement step to calculate the flow rate. | 07-04-2013 |
20130239698 | Flow Meter Assembly, Gate Assemblies and Methods of Flow Measurement - The present invention provides an acoustic flow meter assembly ( | 09-19-2013 |
20130239699 | ULTRASONIC FLOW RATE MEASURING DEVICE - An ultrasonic flow rate measuring device includes a flow path, a partition plate that is inserted from an aperture to partition the flow path into plural sections, an ultrasound transmission body, plural ultrasonic transducers that are provided in positions facing a bottom plate such that an ultrasonic wave transmitted from one of the ultrasonic transducers through the ultrasound transmission body is reflected by the bottom plate and received by the other ultrasonic transducer, a measurement circuit that measures an ultrasonic propagation time between the plurality of the ultrasonic transducers; and a calculation circuit that obtains a flow rate of the target fluid based on a signal from the measurement circuit. | 09-19-2013 |
20130291650 | Ultrasonic Flowmeter with Internal Surface Coating and Method - An ultrasonic flowmeter includes a meter body including a flow passage having wetted surfaces through which fluid flow is to be measured. The flowmeter includes a non-stick coating adhered to the wetted surfaces of the meter body. The flowmeter includes a first transducer and at least a second transducer arranged around the flow passage to transmit and receive ultrasonic energy. The flowmeter includes an electronic unit designed to generate and receive electronic signals from the transducers and to process the signals in order to compute information related to the fluid flow rate through the passage. A method for measuring fluid flow with an ultrasonic flowmeter. A method of making an ultrasonic flowmeter. | 11-07-2013 |
20130312537 | ULTRASONIC FLOW RATE MEASUREMENT DEVICE - An ultrasonic flow rate measurement device includes a measurement channel, through which a fluid to be measured flows; and a sensor fixing casing having openings formed in the measurement channel and sensor fixing cavities communicating with the openings. Moreover, the ultrasonic flow rate measurement device includes a pair of ultrasonic sensors contained in the sensor fixing cavities, for measuring the flow rate of the fluid to be measured; and a flow rate measuring unit for detecting the flow rate based on an ultrasonic wave propagation time between the pair of ultrasonic sensors. Furthermore, the ultrasonic flow rate measurement device includes a suppressing member formed at each of the openings, for suppressing the fluid to be measured from intruding into each of the sensor fixing cavities, wherein the suppressing member is molded integrally with the sensor fixing casing. | 11-28-2013 |
20140069207 | METHODS AND APPARATUS FOR FLUID FLOW MEASUREMENT - A fluid flow meter estimates the velocity of water or another fluid flowing through pipe by comparing measurements of the water velocity to one or more pre-determined templates. The fluid flow meter may collect measurement signals from one or more flow sensors, estimate the fluid velocity or flow rate by comparing the measurement signals to the template, and either store the comparison results in local memory, transmit the results to a remote memory or server, or both. In some embodiments, the fluid flow meter transmits the results to a server via a wireless interface. The transducers and processing system can be powered by a battery, a power line, or, for manifolds installed outdoors, a solar cell. Example transducers and processing systems may also have a passive wake-up feature for power reduction; that is, they may only draw power when water or another fluid flows through the pipe. | 03-13-2014 |
20140109689 | PERCENTAGE DEVIATION BASED EVALUATION OF VELOCITY DEPENDENT CHARACTERISTICS IN ULTRASONIC FLOW METERING SYSTEMS - Apparatus and method for monitoring operation of an ultrasonic flow meter. In one embodiment, an ultrasonic flow metering system includes a passage for fluid flow, an ultrasonic flow meter, and a condition monitor. The ultrasonic flow meter is configured to measure transit time of an ultrasonic signal through the fluid flowing in the passage. The condition monitor is coupled to the ultrasonic flow meter and is configured to monitor a parameter of operation of the ultrasonic meter, and to acquire a plurality of values of the parameter over time. The condition monitor is also configured to compute, for each of the acquired values, a difference between the acquired value and a predetermined reference, and to arrange the differences in time sequence. | 04-24-2014 |
20140109690 | REYNOLDS NUMBER BASED VERIFICATION FOR ULTRASONIC FLOW METERING SYSTEMS - Apparatus and methods for monitoring operation of an ultrasonic flow meter. In one embodiment, an ultrasonic flow metering system includes a passage for fluid flow, an ultrasonic flow meter, and a condition monitor. The ultrasonic flow meter is configured to measure transit time of an ultrasonic signal through the fluid flowing in the passage. The condition monitor is coupled to the ultrasonic flow meter and is configured to monitor a parameter of ultrasonic meter operation with respect to Reynolds number. The condition monitor is further configured to determine whether a value of the parameter at a Reynolds number of the fluid flowing in the passage at a time associated with the value is within a predetermined range of values for the parameter at the Reynolds number. | 04-24-2014 |
20140123767 | ULTRASONIC SIGNAL COUPLER - An ultrasonic signal coupling assembly including ultrasonic transducers attached to one or more ultrasonic couplers configured to be coupled to an exterior surface of a pipe. A height of the ultrasonic coupler or couplers is greater than a thickness of the pipe by a factor of about five or more, and a length of the ultrasonic coupler or couplers is greater than the height of the ultrasonic coupler or couplers. | 05-08-2014 |
20140123768 | ULTRASONIC SIGNAL COUPLER - An ultrasonic signal coupler includes a pipe having a first ultrasonic waveguide and a second ultrasonic waveguide penetrating the pipe so that ultrasonic transducers attached to ends of the ultrasonic waveguides communicate ultrasonic signals through the ultrasonic waveguides directly through a fluid traveling through the pipe. | 05-08-2014 |
20140137662 | ACOUSTIC FLOW RATE METER - Acoustic flow rate meter for the noninvasive determination of the flow or the flow rate in electrically conductive objects through which media flow, in particular pipes or pipelines, having an excitation transducer for generating at least one ultrasonic wave in the object, which is coupled into the medium as a longitudinal wave on an inner side of the object oriented toward the medium, and having a receiving transducer for the detection of an ultrasonic signal in the object, wherein the ultrasonic signal at least partially results due to the longitudinal wave, wherein the excitation transducer is implemented as a high-frequency induction coil, while omitting an acoustic coupling of the excitation transducer with the surface of the object, to generate a varying magnetic field in a surface-proximal region of the object, which is metallic in particular, and the ultrasonic wave is generated by interaction of the varying magnetic field with a static or quasi-static magnetic field in this region. | 05-22-2014 |
20140165740 | ULTRASOUND TRANSDUCER AND METHOD OF GENERATING AND/OR RECEIVING ULTRASOUND - An ultrasound transducer ( | 06-19-2014 |
20140190272 | Conditioner, Apparatus and Method - The present invention pertains to a flow conditioner for displacing and mixing fluid flow to minimize the effects of thermal gradients on the accuracy of a transit time ultrasonic flowmeter and defines an envelope in a cross sectional direction in a pipe having a first ramp adapted to be disposed in the pipe and extending from the outside of the envelope inward toward the center of the pipe in a downstream direction with respect to the fluid flow and forming an angle between 0° and 90° relative to the pipe's inner surface. The conditioner has a second ramp adapted to be disposed in the pipe and in juxtaposition with the first ramp, the second ramp extending from the outside of the envelope inward toward the center of the pipe in an upstream direction with respect to the fluid flow and forming an angle between 0° and 90° relative to the pipe's inner surface. An apparatus for determining fluid flow in a pipe having ultrasonic transducer sites. A method for determining fluid flow in a pipe. A method for affecting fluid flow in a pipe. | 07-10-2014 |
20140208868 | METERING TUBES FOR IMPROVED FLUID FLOW MEASUREMENT - A meter tube assembly for use with an ultrasonic flow meter is provided. The meter tube assembly includes a pipe spool having an extremely rough first section including an interior surface with a relative roughness (ε/D) of 1% or greater. Fluid passing through the extremely rough section exhibits a flow profile that remains substantially constant over the range of Reynolds numbers. As such, ultrasonic flow meters can be simplified as they need not account for different Reynolds numbers. | 07-31-2014 |
20140216167 | FLOW METER WITH PROTRUDING TRANSDUCERS - The invention relates to an ultrasonic flow meter arranged to measure a flow rate of a liquid, the flow meter comprises a flow tube | 08-07-2014 |
20140230568 | ULTRASONIC FLOW-METER - An ultrasonic flow-meter of the present invention includes a partition plate which partitions a passage of a target fluid into a measurement passage and a non-measurement passage, a pair of ultrasonic transducers which is disposed in the measurement passage, a measuring unit which measures a propagation time of an ultrasonic wave between the pair of ultrasonic transducers, and a calculating unit which calculates a flow rate of the target fluid. Further, the calculating unit has a computing unit which computes at least one of a flow velocity and a flow rate of the target fluid in the measurement passage based on the propagation time and an estimating unit which estimates the flow rate of the target fluid in the passage based on the flow velocity or the flow rate in the measurement passage. As a result, an ultrasonic flow-meter which highly accurately measures a target fluid by using a simple configuration can be realized. | 08-21-2014 |
20140238148 | ULTRASONIC FLOW METERING WITH LAMINAR TO TURBULENT TRANSITION FLOW CONTROL - Apparatus and method for ultrasonic flow metering of viscous fluids. In one embodiment, an ultrasonic flow metering system includes an ultrasonic flow meter, a flow conditioner, and a reducer. The ultrasonic flow meter includes a pair of ultrasonic transducers arranged to exchange ultrasonic signals through a fluid stream flowing between the transducers. The flow conditioner is disposed upstream of the ultrasonic flow meter. The reducer is disposed between the flow conditioner and the ultrasonic flow meter to reduce the cross sectional area of the fluid stream flowing from the flow conditioner to the ultrasonic flow meter. | 08-28-2014 |
20140260667 | SYSTEMS AND METHODS FOR ACOUSTIC DETECTION USING FLOW SENSORS - Systems and method for acoustic detection using flow sensors are provided. One system includes a flow conduit configured to allow fluid flow therethrough and a flow disrupter configured to impart a flow disturbance to the fluid flow. The system also includes at least one of a first sensor or a second sensor. The first sensor is disposed within the flow conduit at a first position, wherein the first sensor is responsive to first disturbances and configured to generate signals characteristic of the first disturbances. The second sensor is disposed within the flow conduit at a second position, wherein the second sensor is responsive to second disturbances and configured to generate signals characteristic of the second disturbances. The system additionally includes a processor operably coupled to the first and second sensors, wherein the processor is configured to distinguish between signals characteristic of the first and second disturbances. | 09-18-2014 |
20140260668 | ULTRASONIC FLOWMETER WITH INTEGRALLY FORMED ACOUSTIC NOISE ATTENUATING FEATURE - A flowmeter has a one-piece conduit with an outer surface and an inner surface that define a wall thickness therebetween, and first and second transducers, where each transducer is disposed external of or integral with the one-piece conduit, in signal communication with an interior volume of the one-piece conduit, and relative to each other such that each transducer can send and receive an acoustic signal to the other transducer. The one-piece conduit includes a plurality of acoustic noise attenuating features integrally formed with at least one of the outer surface and the inner surface and disposed between the first and second transducers, each of the features being configured and oriented to disturb a propagation direction of a parasitic acoustic wave that will propagate in the wall of the one-piece conduit in response to activation of at least one of the transducers. | 09-18-2014 |
20140290382 | Device And Method For Determining A Flow Velocity Of A Fluid Or A Fluid Component In A Pipeline - A device and a method for determining a flow velocity of a fluid or a fluid component in a pipeline is described. The device comprises a transmitter adapted to be placed inside the pipeline and arranged to transmit an ultrasound signal into the fluid or fluid component in a first direction; a receiver adapted to be placed inside the pipeline and arranged to receive a dispersed ultrasound signal, generated by dispersion of the ultrasound signal by the fluid or the fluid component in a second direction, the second direction being different from the first direction, and to provide a receiver signal representing the dispersed ultrasound signal; and, a processing unit arranged to receive said receiver signal and to determine a frequency difference between the transmitted ultrasound signal and the dispersed ultrasound signal and determining the flow velocity of the fluid or the fluid component based on said difference. | 10-02-2014 |
20140345390 | Flowmeter and Method - A flowmeter for detecting fluid flow rates in a pipe includes a tube having a channel disposed in the pipe through which fluid in the pipe flows. The flowmeter includes an upstream transducer in contact with the pipe and positioned so plane waves generated by the upstream transducer propagates through the channel. The flowmeter includes a downstream transducer in contact with the pipe and positioned so plane waves generated by the downstream transducer propagate through the channel and are received by the upstream transducer which produces an upstream transducer signal. The downstream transducer receives the plane waves from the upstream transducer and provides a downstream transducer signal. The flowmeter includes a controller in communication with the upstream and downstream transducers which calculate fluid flow rate from the upstream transducer signal and the downstream transducer signal. | 11-27-2014 |
20150075292 | METHOD FOR MONITORING A FLOW USING DISTRIBUTED ACOUSTIC SENSING - A method of monitoring acoustic energy using distributed acoustic sensing. The method involves supplying a fluid flow at different pressures and sensing fluid flow characteristics in at least one location at each pressure. The data may be processed to provide a fluid resistance value related to a particular fluid flow at each location, collectively forming a fluid resistance index (FRI). The method may include following the initial fluid flow with a process flow, which may then be followed by another fluid flow. The flow characteristics of the latter fluid flow may be measured and compared with the initial fluid flow, providing a measure of the success of the process flow. In application, this method may be used to enhance downhole operations, including acid stimulation treatments. | 03-19-2015 |
20150082912 | ULTRASONIC FLOW METER - An ultrasonic flow meter is equipped with a housing through which a liquid flows, and a pair of detection units disposed on opposite ends of the housing and including acoustic wave transmitting and receiving units capable of transmitting and receiving acoustic wave signals. Vibration generating mechanisms having vibration generating bodies arranged perpendicularly to the detection units are disposed on an outer circumferential side of the housing. In addition, when the flow rate of the liquid that flows through the housing is measured, the vibration generating bodies are energized and made to vibrate, such that gas bubbles, which adhere to cover members in contact with the liquid and that cover the acoustic wave transmitting and receiving units, are removed by the vibrations. | 03-26-2015 |
20150082913 | ULTRASONIC FLOW METER - An ultrasonic flow meter is equipped with a housing through which a liquid flows, and a pair of detection units disposed on opposite ends of the housing and including acoustic wave transmitting and receiving units capable of transmitting and receiving acoustic wave signals. Paired connecting plugs are connected respectively to both ends of the housing. In addition, a supply passage of one of the connecting plugs, a conduit of the housing, and a discharge passage of another of the connecting plugs are disposed on a straight line. A liquid supplied to the supply passage flows through a passage of the conduit and to the discharge passage. Consequently, a flow rate of the liquid is measured based on the propagation time of the acoustic wave signals, which are transmitted and received by the acoustic wave transmitting and receiving units. | 03-26-2015 |
20150107371 | METHOD AND SYSTEM FOR DETERMINING CHARACTERISTICS OF AN ACOUSTIC SIGNAL - A method and system for measuring characteristics of an acoustic signal traveling through a fluid in a pipe uses an ultrasonic transducer attached directly to the pipe. The transducer is disposed in a housing attached to an outside surface of a flange of the pipe. The transducer fires an acoustic signal and its characteristics are measured. | 04-23-2015 |
20150128723 | ULTRASONIC TRANSDUCER AND ULTRASONIC FLOW METER INCLUDING ULTRASONIC TRANSDUCER - An ultrasonic transducer comprises a metal plate; an acoustic matching member fastened to one of surfaces of the metal plate, a piezoelectric substrate which is fastened to the other surface of the metal plate and generates a vibration; and an insulating damping member covering a surface of the piezoelectric substrate which surface is on an opposite side of a surface fastened to the metal plate; wherein a thickness of the insulating damping member is set to a length which is n/2 of a wavelength of the vibration propagating through the insulating damping member. | 05-14-2015 |
20150135850 | FLOW RATE MEASURING DEVICE - To measure the propagation time of an ultrasonic signal, the flow rate measuring device of the present invention has amplifier for amplifying a received signal, reference-voltage changing part, reference-voltage setting part, and reference comparator for comparing between the received signal waveform and reference voltage. Reference-voltage changing part changes the reference voltage according to the amplification degree of the amplified waveform of the received signal in amplifier. Comparing the changed reference voltage with the received signal waveform enhances stability in calculation of the propagation time. This prevents measurement accuracy of the flow velocity and the flow rate of fluid to be measured from degradation. | 05-21-2015 |
20150143919 | ULTRASONIC FLOW METER UNIT, AND MANUFACTURING METHOD OF ULTRASONIC FLOW METER UNIT - An ultrasonic flow meter unit, mounted to a fluid passage through which a measurement target fluid flows, comprises a pair of ultrasonic transducers each including a piezoelectric substrate, and an acoustic matching member; a measuring circuit which measures a flow of a target fluid based on time for which an ultrasonic pulse propagates between the pair of ultrasonic transducers; and an insulating damping member unitarily formed to cover at least a portion of each of a portion of each of the pair of ultrasonic transducers, which portion contacts the fluid passage, the piezoelectric substrate, and the measuring circuit. | 05-28-2015 |
20150308870 | ACOUSTICALLY ISOLATED ULTRASONIC TRANSDUCER HOUSING AND FLOW METER - An ultrasonic transducer apparatus is provided. In one embodiment, the apparatus includes an outer housing, an inner housing disposed within the outer housing, and an ultrasonic transducer disposed within the inner housing. The outer housing has an aperture that enables pressurized fluid to enter the outer housing while allowing the outer housing to acoustically isolate the inner housing and the ultrasonic transducer from an additional component when the outer housing is connected to the additional component. Additional systems, devices, and methods are also disclosed. | 10-29-2015 |
20150316400 | FIELD DEVICE, ESPECIALLY AN ULTRASONIC, FLOW MEASURING DEVICE - A field device, especially an ultrasonic, flow measuring device, comprising: a transmitter for producing an alternating exciter signal; and at least one transducer, especially first and second ultrasonic transducers. The transmitter additionally has a generator for producing the alternating exciter signal and a transmitting stage, wherein the generator is connected via the transmitting stage with at least the first ultrasonic transducer. An output of the transmitting stage is connected with the transducer, especially the first ultrasonic transducer, via a first signal path, wherein the first signal path has a first resistance element, wherein a second signal path branches from the first signal path, wherein the second signal path has a second resistance element connected on one side to ground for lessening impedance related fluctuations of the exciter signal, wherein the second signal path branches from the first signal path between the output of the transmitting stage and the first resistance element. | 11-05-2015 |
20150323359 | Ultrasonic, Flow Measuring Device - An ultrasonic, flow measuring device including a measuring tube and at least two ultrasonic transducers having, in each case, two electrical connections. The ultrasonic transducers are arranged in or on the measuring tube for determining the flow velocity and/or the volume flow of a medium flowing through the measuring tube based on the travel-time difference method. The flow measuring device has an electrical circuit for operating the ultrasonic transducer. A first ultrasonic transducer of the two ultrasonic transducers is switchable in such a manner that, under action of an exciter signal, it emits an ultrasonic signal into the medium, and a second ultrasonic transducer of the two ultrasonic transducers is switchable in such a manner that, upon arrival of the ultrasonic signal, it returns a received signal, characterized in that the circuit includes at least one connection to one of the connections of one of the two ultrasonic transducer, in order that the ultrasonic transducer can be short-circuited for preventing a disturbance signal. | 11-12-2015 |
20150330818 | METHODS AND APPARATUS FOR FLUID FLOW MEASUREMENT - A fluid flow meter estimates the velocity of water or another fluid flowing through pipe by comparing measurements of the water velocity to one or more pre-determined templates. The fluid flow meter may collect measurement signals from one or more flow sensors, estimate the fluid velocity or flow rate by comparing the measurement signals to the template, and either store the comparison results in local memory, transmit the results to a remote memory or server, or both. In some embodiments, the fluid flow meter transmits the results to a server via a wireless interface. The transducers and processing system can be powered by a battery, a power line, or, for manifolds installed outdoors, a solar cell. Example transducers and processing systems may also have a passive wake-up feature for power reduction; that is, they may only draw power when water or another fluid flows through the pipe. | 11-19-2015 |
20150355002 | CLAMP-ON ULTRASONIC FLOWMETER AND FLOW RATE MEASURING METHOD - A clamp-on ultrasonic flowmeter includes: a first ultrasonic transducer that injects a first ultrasonic signal at an angle in excess of a critical angle into a pipe wherein a fluid flows; a second ultrasonic transducer, provided in a position able to receive the first ultrasonic signal, which injects a second ultrasonic signal at the same angle as the aforementioned angle, relative to the pipe; and a flow rate calculating portion that calculates either one of or both of a flow speed and a flow rate of the fluid within the pipe based on a first time for the first ultrasonic signal to pass through the interior of the pipe to arrive at the second ultrasonic transducer and a second time for the second ultrasonic signal to pass through the interior of the pipe to arrive at the first ultrasonic transducer. | 12-10-2015 |
20160041017 | Ultrasonic Flowmeter with Internal Surface Coating and Method - An ultrasonic flowmeter includes a meter body including a flow passage having wetted surfaces through which fluid flow is to be measured. The flowmeter includes a non-stick coating adhered to the wetted surfaces of the meter body. The flowmeter includes a first transducer and at least a second transducer arranged around the flow passage to transmit and receive ultrasonic energy. The flowmeter includes an electronic unit designed to generate and receive electronic signals from the transducers and to process the signals in order to compute information related to the fluid flow rate through the passage. A method for measuring fluid flow with an ultrasonic flowmeter. A method of making an ultrasonic flowmeter. | 02-11-2016 |
20160069718 | Method for Verifying the Reliability of Ascertained Measurement Data From an Ultrasonic Flow Measurement According to the Transit-Time Difference Method and Ultrasonic Flow Meter - A method for verifying the reliability of ascertained measurement data of an ultrasonic, flow measurement made according to the travel-time difference method, wherein an ultrasonic flow measuring device having at least two ultrasonic transducers is used to transmit and receive ultrasonic signals inclined in or counter to a flow direction of a measured medium. A first ultrasound disturbance signal is registered within a first time window before receiving a first ultrasound wanted signal, which essentially propagates through the measured medium between the transducers. The first ultrasound disturbance signal propagates at least partially in the measured medium between the ultrasonic transducers, wherein a second ultrasound disturbance signal is registered within a second time window before receiving a second ultrasound wanted signal, which essentially propagates through the measured medium between the transducers. The second ultrasound disturbance signal propagates at least partially in the measured medium between the ultrasonic transducers, and the first and second ultrasound wanted signals are associated respectively with two ultrasonic signals, which are sent in opposing directions through the medium. A quality criterion is ascertained for evaluating the measurement uncertainty of a measured value proportional to the travel-time difference ascertained from the first and second ultrasound wanted signals, wherein the ascertaining of the quality criterion includes a difference forming between the first and second disturbance signals. | 03-10-2016 |
20160097663 | FLOWMETER USING ULTRASONIC TRANSDUCER - There is provided a flow meter using at least one ultrasonic transducer. The flow meter includes an ultrasonic transducer, a wedge that has a sloped surface formed on a top portion of the wedge and oblique with respect to a downward direction, and a dented portion formed in a half-cylinder shape along a longitudinal direction of the sloped surface; and a rotation portion that has a plane section where the ultrasonic transducer is positioned, and a curved section extended from two opposite edges of the plane section and curved in a semicircular shape to be contacted with the dented portion. | 04-07-2016 |
20160103004 | FLOW MEASURING DEVICE FOR MEASURING A PARAMETER OF A FLOW FORMED FROM A FLUID - The invention relates to a flow measuring device for measuring a parameter of a flow formed from a fluid which flows in a main direction of flow in a line, comprising a first line section for conducting the fluid out of the main direction of flow; a second line section for conducting the fluid back into the main direction of flow; a line connection section for connecting the first line section to the second line section; at least one ultrasound device for transmitting and/or receiving ultrasound waves; and an evaluation unit for carrying out a transit-time difference measurement and for determining the parameter, wherein at least one swirl generating unit for generating a swirl is provided which is arranged downstream of the first line section such that the generated swirl is directed in a direction which is opposite to a direction of a swirl present downstream of the first line section and upstream of the swirl generation unit. | 04-14-2016 |
20160109272 | USE OF TRANSDUCERS WITH A PIEZO CERAMIC ARRAY TO IMPROVE THE ACCURACY OF ULTRA SONIC METERS - An ultrasonic meter includes a group of piezoelectronic ceramic arrays, wherein each array comprises array stripes, such that a signal associated with each array can be split and a required phase shaft added to the signal to obtain simultaneously different data from the signal such as, for example, the transit time of a direct path and crosstalk. The smaller array can provide a higher aperture and improve the use of crosstalk. | 04-21-2016 |
20160187171 | Reflector Array For Transit-Time Flow Measurement - Acoustic reflectors in a pipe can aid in defining an ultrasonic beam for a transit time flow measurement. Flow impedance associated with such reflectors can be minimized by using reflectors comprising an array of parallel reflective facets elongated transverse to an axis of the pipe and skewed with respect to the axis of the pipe. These facets may be formed in the wall of the pipe—e.g., by cutting grooves. Alternately, facet arrays may be formed in a separate low-profile body that is then attached to an inner wall of the pipe. | 06-30-2016 |
20160195418 | Ultrasonic Flow Meter | 07-07-2016 |
20220136880 | MODULAR ULTRASONIC FLOW METER - A modular ultrasonic flow meter including a substantially watertight meter housing connected; a measurement printed circuit board including a measurement circuit communicating with one or more ultrasonic transducers, arranged in the meter housing for transmitting and receiving ultrasonic signals; and a self-contained power supply. The ultrasonic flow meter further includes a control module comprising a module housing connected with a main printed circuit board including a central processing unit, a memory circuit and a communication circuit, and a power- and communication connection is provided between the main printed circuit board of the control module and the measurement printed circuit board whereby the self-contained power supply may power the main printed circuit board and the measurement printed circuit board. | 05-05-2022 |