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Match Document Document Title
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...
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...
8019559 Sonic flow meter and method  
A flow meter and method for measuring flow in liquids which may have entrained bubbles or foreign matter. The meter performs alternate transit time and Doppler measurements. The transit time...
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...
7981082 System and method for reducing air bubbles in a fluid delivery line  
A method and pump that accurately senses air in a fluid delivery line pulses or activates and deactivates the air sensor(s) multiple times during the pumping phase of the fluid delivery cycle and...
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...
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...
7925456 Method and apparatus for directing the use of a Coriolis flow meter  
A method and apparatus is disclosed that guides a user through a sequence of steps that will allow the user to complete a predefined task using the flow meter. The steps include: selecting a...
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...
7911306 Transformer board  
A transformer board is disclosed. In some embodiments, the transformer board includes a base, a circuit board, a transformer having a first and second winding, a first and a second connector, a...
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...
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...
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...
7831398 Method for quantifying varying propagation characteristics of normal incident ultrasonic signals as used in correlation based flow measurement  
According to the present invention, a method is provided for sensing a fluid flow within a pipe having a lengthwise axis to determine a parameter of the fluid flow. The method includes the...
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...
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...
7810399 Ultrasonic flowmeter  
An ultrasonic flowmeter with a measuring tube through which flows a medium and which, viewed in cross section, has a split circumference forming two halves with two ultrasonic converter pairs,...
7795783 Transducer assembly  
Transducer assemblies and methods of replacing having a housing, a removable diaphragm, and a sealing diaphragm. The transducer assembly may be used with a spool piece to prevent fluid from...
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...
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...
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...
7752919 System and method of an acoustic flow meter with dual flow measurements  
Acoustic flow meter with dual flow measurements. At least some of the illustrative embodiments are flow meters comprising a spool piece that defines a central passage, a first plurality of...
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...
7720629 Method and system for measuring flow layer velocities using correlation velocity measuring sonar  
The present invention discloses a method and a system for measuring flow layer velocities using correlation velocity measuring sonar. The present invention provides a new theoretical expression...
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...
7690266 Process fluid sound speed determined by characterization of acoustic cross modes  
An apparatus measures a speed of sound (SOS) in a process flow by characterizing low order acoustic cross modes in the process flow in a conduit. The apparatus includes transducers on the conduit,...
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...
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...
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...
7637167 Apparatus and method for characterizing two phase fluid flow  
An apparatus (and corresponding method) for characterizing the fluid properties of a two phase fluid includes a restriction element (e.g., orifice plate or nozzle) along the flow path of the two...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
7546776 Leak detector for detecting leak of liquid injected into blood vessel using pulse signal  
A leak detector sequentially emits pulse signals toward a human body at a position at which a needle is inserted, detects pulse signals reflected inside of the human body, and measures a time...
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...
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...
7509878 Ultrasonic cavitating apparatus and ultrasonic doppler flow measurement system  
Disclosed is an ultrasonic Doppler flow measurment system that achieves flow measurement regardless of the temperature of a fluid. A temperature sensor 7 is combined with a pipe 1 to measure the...
7503225 Ultrasonic flow sensor having a transducer array and reflective surface  
An ultrasonic flow sensor is used in particular for measuring the volumetric or mass flow of a fluid in a pipe. The sensor includes at least one ultrasonic transducer which is capable of emitting...
7481114 Noninvasive measurement of fluid characteristics using reversibly deformed conduit  
An apparatus for determining a characteristic for a fluid in a tube, the apparatus including a force applying system to cause a change in a transverse dimension of a segment of the tube, wherein...
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...
7437948 Ultrasonic flowmeter and ultrasonic flow rate measurement method  
A flowmeter includes: a transit time method unit having a sensor and a reception signal amplification control unit and a flow rate calculation unit which are connected to the sensor via a sensor...
7412902 Device for determination and/or monitoring of the volumetric and/or mass flow of a medium and having coupling element including two element portions  
A clamp-on ultrasonic flow measuring device for determining volume and/or mass flow rate of a medium in a containment. The clamp-on ultrasonic measuring device is of low temperature sensitivity....

Matches 51 - 100 out of 363 < 1 2 3 4 5 6 7 8 >