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| Number | Title | Issue Date |
| 8438936 | Sensor assembly including a collar for mounting sensors to a pipeline A sensor assembly for use with a fluid transport system is provided. The sensor assembly includes at least two sensors that are configured to measure a rate of flow of a fluid channeled through a pipeline of the fluid transport system. Moreover, the sensor assembly ... | 05/14/2013 |
| 8413523 | Oscillation circuit An oscillation circuit has an oscillator having a resonant frequency, an amplifier connected to the oscillator, an energizing pulse generator for generating a energizing pulse within a certain range including the resonant frequency, a switching unit for switching be... | 04/09/2013 |
| 8402841 | Apparatus and method for sensing fluid flow in a pipe with variable wall thickness A method and apparatus for sensing a fluid flow within a pipe is provided. The method includes the steps of: a) providing an ultrasonic sensor having a transmitter operable to transmit ultrasonic signals through the first pipe wall, the fluid flow disposed within th... | 03/26/2013 |
| 8347732 | Adjustable ultrasonic gas flow measurement device An adjustable ultrasonic gas flow measurement device includes a gas pipe, a transmitter, a receiver and a micro-processing module. The gas pipe is filled with a gas under test. The transmitter and the receiver are respectively installed in two ends of the gas pipe f... | 01/08/2013 |
| 8161824 | Multilayer flow path member of ultrasonic fluid measurement apparatus and ultrasonic fluid measurement apparatus A multilayer flow path member of an ultrasonic fluid measurement apparatus and an ultrasonic fluid measurement apparatus capable of enhancing the measurement accuracy of the mean flow velocity are provided. When a multilayer flow path member 30 placed in a me... | 04/24/2012 |
| 8151651 | Flowmeter transducer magnetic clamping Tangential forces present at the mating area between a clamp-on transducer and a pipe can be made very small in order to provide a higher quality, more stable acoustic coupling. In some cases this is accomplished by providing a low friction bearing on a surface of a... | 04/10/2012 |
| 8146442 | Device and method for measuring a flow characteristic of a fluid in a conduit A device for determining a flow characteristic, in particular flow velocity, of a fluid in a conduit, comprises a conduit body (110), at least four pairs of ultrasonic transducers (116, 118; 122, 124; 128, 130; 132, 1340 defining swirl sensitive acoust... | 04/03/2012 |
| 8104359 | Ultrasonic mass flow rate monitoring device with ultrasonic sensor transmitting/receiving signals along defined sound paths of different lengths An ultrasonic, flow measuring device having a plurality of measuring channels. At least one ultrasonic sensor is situated in a first region of a pipeline, or measuring tube; at least two ultrasonic sensors are situated in a second region of the pipeline (5), ... | 01/31/2012 |
| 8020452 | Apparatus for measuring a volume flow rate of a controlled medium in a pipeline A device for measuring the volume flow rate of the controlled medium in a pipeline comprises first and second transmitting-receiving radiators installed and spaced on the pipeline and alternately fed with ultrasonic signals. Received after they have passed in and co... | 09/20/2011 |
| 7980142 | Ultrasonic flow rate measuring device having a plurality of ultrasonic flow rate sensors The present invention is directed to an ultrasonic flow rate measuring device capable of improving the measurement accuracy. Such an ultrasonic flow rate measuring device comprises first to third ultrasonic flow rate sensors in the measurement passage which are equi... | 07/19/2011 |
| 7963174 | Ultrasonic flowmeter having a rubber transmitting body 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 pip... | 06/21/2011 |
| 7963175 | Clamp-on apparatus for measuring a fluid flow that includes a protective sensor housing An apparatus for measuring one or more characteristics of a fluid flowing within a pipe is provided. The apparatus includes a housing, sealant, and an array of at least two ultrasonic sensors. The housing is operable to be mounted on the exterior surface of the pipe... | 06/21/2011 |
| 7913575 | Ultrasonic flow rate measuring device An ultrasonic flow rate measuring device according to the present invention improves a measuring accuracy. An ultrasonic flow rate measuring device includes an ultrasonic measuring portion in which a first ultrasonic transmitter-receiver and a second ultrasonic tran... | 03/29/2011 |
| 7870793 | Transit time flow sensor with enhanced accuracy Ultrasonic transit time flow meters using transducers mounted on insertion probes spaced apart along a pipe axis provide an economical way to measure fluid flow. The accuracy of these flow meters can be improved by providing additional transducers to measure the cur... | 01/18/2011 |
| 7845240 | Device and method for determining a flow characteristic of a fluid in a conduit A device for determining a flow characteristic of a fluid in a conduit comprises a conduit body (10), a first pair of first ultrasonic transducers (16, 18) defining a first swirl sensitive acoustic path (20) and a second pair of second ultrasoni... | 12/07/2010 |
| 7841243 | Speed of sound and pipe size detector An ultrasonic transit time approach is used for measuring both a speed of sound of a fluid and a diameter of a pipe through which the fluid flows. A reflecting structure is provided to split an acoustic beam generated by a transducer into two portions. One of these ... | 11/30/2010 |
| 7823462 | Turbulence conditioner for transit time ultrasonic flow meters and method An apparatus for determining fluid flow in a pipe includes an ultrasonic flowmeter which communicates with the interior of the pipe through at least one pair of apertures, where each aperture of the one pair of apertures has an effective diameter. The apparatus incl... | 11/02/2010 |
| 7823463 | Ultrasonic flow sensor using two streamlined probes A time-of-flight ultrasonic flow meter uses transducers placed on streamlined heads of probes that are spaced out along a pipe. The placement of the transducers and probes is selected so that an acoustic signal can propagate between the transducers on the two probes... | 11/02/2010 |
| 7793555 | Apparatus and method for augmenting a coriolis meter A correction system provides at least one of a compensated mass flow rate measurement and a compensated density measurement of a coriolis meter. The correction system includes a gas volume fraction (GVF) meter, which may include an array of strained-based or pressur... | 09/14/2010 |
| 7775125 | Low power ultrasonic flow measurement There is described a method of ultrasonic flow measurement for measuring a flow speed of a fluid in a conduit, the method comprising: providing an ultrasonic flow meter comprising a microprocessor, a clock, and a pair of ultrasonic transducers operable to transmit s... | 08/17/2010 |
| 7775124 | Ultrasonic sensor with reciprocal transmitting and receiving circuit An ultrasonic sensor has at least two ultrasonic converters for transmitting and receiving ultrasonic signals, connected with a transmitting circuit and a receiving circuit. A switching device is provided, by which the ultrasonic converters are connected in series w... | 08/17/2010 |
| 7735380 | Method and system of coordination of measurement subsystems of a flow meter Coordination of measurement subsystems of a flow meter. At least some of the illustrative embodiments are flow meters comprising a spool piece that defines a central passage, a first plurality of transducer pairs mechanically coupled to the spool piece, a first cont... | 06/15/2010 |
| 7703337 | Clamping arrangements for a transducer assembly having a piezoelectric element within a foam body A clamp-on acoustic flow meter for measuring the rate of flow of a fluid in a pipe uses a transducer stack mounted in a housing that includes a rigid polymeric foam body in which the stack is embedded. This transducer configuration is used in combination with a clam... | 04/27/2010 |
| 7673526 | Apparatus and method of lensing an ultrasonic beam for an ultrasonic flow meter A method for sensing flow within a pipe having an internal passage disposed between a first wall portion and a second wall portion is provided, comprising the steps of: 1) providing a flow meter having at least one ultrasonic sensor unit that includes an ultrasonic ... | 03/09/2010 |
| 7669483 | Flowmeter transducer clamping Tangential forces present at the mating area between a clamp-on transducer and a pipe can be made very small in order to provide a higher quality, more stable acoustic coupling. In some cases this is accomplished by providing a low friction bearing on a surface of a... | 03/02/2010 |
| 7658114 | Ultrasonic flow meter In one embodiment, an ultrasonic flow meter is provided for measuring a flow rate of a medium flowing through a conduit, the ultrasonic flow meter comprising two ultrasonic emitters and two ultrasonic receivers mounted to the conduit. The flow rate is determined bas... | 02/09/2010 |
| 7634950 | Method of construction for a low cost plastic ultrasonic water meter There is described an ultrasonic flow meter comprising a pipe having two ends, electronic circuitry, a first enclosure housing the electronic circuitry, a second enclosure housing the pipe, and a plurality of ultrasonic transducers attached to an external surface of... | 12/22/2009 |
| 7628081 | Acoustic pulse flow meter A time-of-flight flow meter that is particularly useful for measuring the flow of gases, such as steam, uses a spark gap periodically energized with an electrical pulse to generate an acoustic pulse. The pulse is detected by upstream and downstream acoustic detector... | 12/08/2009 |
| 7624650 | Apparatus and method for attenuating acoustic waves propagating within a pipe wall A method and apparatus for damping an ultrasonic signal propagating in the wall of a pipe, the apparatus including at least one damping structure for securing at least one sensor to the wall of the pipe, wherein the at least one sensor includes a transmitter compone... | 12/01/2009 |
| 7624651 | Apparatus and method for attenuating acoustic waves in pipe walls for clamp-on ultrasonic flow meter An apparatus is presented for damping an undesired component of an ultrasonic signal. The apparatus includes a sensor affixed to a pipe. The sensor includes a transmitter and a receiver. The transmitted ultrasonic signal includes a structural component propagating t... | 12/01/2009 |
| 7617739 | Non-invasive ultrasonic system to determine internal pressure in flexible tubing A system for determining pressure change in a liquid flowing in a tube of an elastic material has a sensor head having a slot and a pair of piezoelectric elements mounted in opposing walls of said slot between which the tube is placed in contact with the opposing el... | 11/17/2009 |
| 7617738 | Method and apparatus for measuring flow rate of fluid The invention provides a method and an apparatus for measuring a flow rate which can determine a flow rate of a fluid, particularly a slowly flowing fluid, with an improved accuracy, without requiring a complicated flow rate-measuring system. A system for mea... | 11/17/2009 |
| 7614309 | Cup-shaped ultrasonic transducer for a flowmeter In order to be able to couple as great a fraction as possible of ultrasonic measuring signals into a medium to be measured, an ultrasonic sensor is provided with a cup-shape and includes a housing and an oscillatable unit for producing the ultrasonic signals. The os... | 11/10/2009 |
| 7614310 | Ultrasound flow sensor with a modulo-2Pi for a remaining part tracing For determining the transit time of an ultrasonic signal from an ultrasonic sensor that was launched into a measurement path by an ultrasonic converter, the phase shift of the ultrasonic signal is determined relative to a reference timing signal, and a remainder is ... | 11/10/2009 |
| 7607359 | Ultrasonic flow rate meter having a pressure sensor An ultrasonic flow rate meter and a method for measuring the flow rate with the aid of ultrasound are described, having at least two ultrasonic transducers situated offset in a flow channel in the flow direction for transmitting and receiving ultrasound wave packets... | 10/27/2009 |
| 7581453 | Ultrasonic flow meter system An ultrasonic flow meter system includes transducers arranged with respect to a conduit to define at least one chordal path through fluid flowing in the conduit, and at least one transmitting transducer and receiving transducer pair on the chordal path for generatin... | 09/01/2009 |
| 7571656 | Method for ultrasonic measurement of the flow of liquid and/or gaseous media and an apparatus for implementing thereof The invention relates to measuring technique. For increasing an accuracy of measurement of the flow of liquid and/or gaseous medium a method for ultrasonic measurement of the flow of liquid and/or gaseous media comprises radiating ultrasonic oscillations down... | 08/11/2009 |
| 7523677 | Apparatus for ascertaining and/or monitoring volume-or mass-flow of a medium Apparatus for ascertaining and/or monitoring volume- or mass-flow of a medium flowing through a pipeline in the direction of the longitudinal axis of the pipeline. The apparatus includes at least one ultrasonic sensor containing at least one sound-producing element ... | 04/28/2009 |
| 7520180 | Method and apparatus for the ultrasonic measurement of the flow rate of flowable media A method for operating a measuring apparatus (1) for determining the flow rate of a flowable medium through a measuring section (3) is provided, wherein the measuring apparatus (1) has, as sensors, two ultrasonic transceivers (4), which a... | 04/21/2009 |
| 7469599 | Flowmeter mounted on a containment Flowmeter comprising at least two ultrasonic transducers that are mounted on a container which is penetrated by a medium in a certain direction of flow. The ultrasonic transducers alternately transmit and receive ultrasonic test signals in the direction of flow and ... | 12/30/2008 |
