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Match Document Document Title
9032816 Ultrasonic transducer and ultrasonic flow-meter  
An ultrasonic wave transmitting and receiving unit includes: a piezoelectric member supporting plate; an acoustic matching member fixed to one surface of the piezoelectric member supporting plate;...
9020754 Vehicle arrival prediction  
A method and apparatus for predicting the arrival time of a transit vehicle at a transit stop of a transit route is presented. The arrival time is predicted using historical location information...
9014993 Flow rate measuring device  
A flow rate measuring device simplifies calculation, reduces memory required for calculation, absorbs variations due to manual operation and, depending on the state of ignition, improves the...
8997585 Fluid flow monitor  
There are disclosed methods and apparatus for monitoring fluid flow along a conduit such as a well bore or a pipeline. A sensor optical fiber is disposed along the conduit, and an optical...
8997848 Pressure balanced ultrasonic flowmeter  
A system, including an ultrasonic flow meter with a conduit including a conduit wall and configured to flow a fluid, an housing disposed about the conduit to define a fluid chamber about the...
8991256 Method for determining speed of a signal species in a medium and associated apparatus  
Methods and apparatus for determining the speed of a signal species, such as an acoustic signal, in a multilayered medium is described. The multilayer medium, generally, has a first and second...
8984960 Ultrasonic flow rate measurement device having inlet side flow rectification part and outlet side coupling part  
Ultrasonic flow rate measurement device includes measurement flow path in which a fluid to be measured flows, and a pair of ultrasonic vibrators that are disposed in directions such that a...
8978481 Simultaneous ultrasonic cross-correlation and transit time measurements for multiphase flow rate analysis  
Pairs of acoustic transducers positioned at different radial distances in a conduit are used to measure travel times of acoustic signals in opposite directions and inclined to the direction of a...
8972208 Flow meter device  
In a flow meter device of the present invention, a time measuring section of the flow meter device includes a first counter which starts counting at a starting point of measurement of propagation...
8955391 Ultrasonic flow measurement arrangement and method having a clock generating device and driver  
A measurement arrangement comprises a clock generator (11) which can be coupled to an emitting ultrasonic transducer (13) and a mixing arrangement (12) for providing a first mixer output signal...
8939034 Flow measuring device  
Flow measuring device for ascertaining flow of a measured medium flowing through a measuring tube, which flow measuring device has a first housing for protruding into the measured medium, wherein...
8919209 Device for measuring the characteristics of a flow within a pipe  
A device for measuring the physical characteristics of a flow within a pipe is disclosed. In one exemplary embodiment, the device comprises a plug attached to two or more strut assemblies, each...
8919207 Flow measuring device and method using transmission paths having different angles  
A multimode flow meter can use both the time-of-transit of upstream and downstream ultrasonic signals and time for transmission of downstream-only signals to determine a flow velocity of a medium...
8919208 Ultrasonic flowmeter apparatus having a first and a second housing part with grooves for clamping a resilient conduit  
An ultrasonic flowmeter apparatus, which can be mounted on a conduit flowing a fluid whose flow rate is to be measured, has two housing halves coupled swingably about an axis. Free ends of the...
8904881 Ultrasound transducer assembly and ultrasound flowmeter  
The present invention relates to an ultrasound transducer assembly for an ultrasound flowmeter, comprising a one-part or multi-part housing (2), which is provided to be connected to a line...
8892373 Method for determining the starting instant of a periodically oscillating signal response  
A method for determining the starting instant (t0) of a periodically oscillating signal response (E2; E2′), wherein the signal response comprises a first set of half periods (E2a-d; E2′a-d) having...
8813575 Ultrasonic flow sensor and method  
A flow sensor includes a conduit and an ultrasonic transceiver. The conduit has an inner surface and an outer surface. The inner surface defines a flow passage through which a fluid may flow in a...
8806734 Flowmeter and method  
A method of producing an ultrasonic flow meter having the steps of fabricating a tube made of a sound absorbing material. There is the step of machining in the tube a channel having a constant...
8794080 Ultrasonic flow sensor for detecting a flow of a fluid medium  
An ultrasonic flow sensor for detecting a flow of a fluid medium in a flow tube includes at least one first ultrasonic transducer, at least one second ultrasonic transducer, and at least one...
8783116 Ultrasonic flow meter having protection joint interposed between the measurement unit and the external pipe  
A straight tube ultrasonic flow meter includes a measuring unit disposed within a measurement space of a casing. The measuring unit has a straight tubular body for measurement through which a...
8757006 Method and measuring system for determining and/or monitoring the flow of a measured medium through a measuring tube  
A measuring system for determining and/or monitoring flow of a measured medium through a measuring tube, wherein the measuring system includes: at least one control/evaluation unit, which, based...
8714029 Flow measuring device and method including both a doppler frequency shift measurement method and travel time measurement method  
Provided are a method and a device for determining a flow rate through a pipe. A first measurement device is provided which determines the flow profile of the fluid in a first region using a...
8695435 Method of measuring a volume flow rate of a controlled medium in a pipeline  
Method comprises transmitting and receiving ultrasound signals (USS) in and counter direction of flow (ICDF) of controlled medium in pipeline (CMP); determining times of USS transmission ICDF of...
8689639 Ultrasonic transducer having a matching layer between a piezoelectric element and a coupling element  
An ultrasonic transducer for determining and/or monitoring flow of a measured medium through a measuring tube, which includes at least one piezoelectric element, at least one coupling element and...
8683873 Phase detector for a vortex flowmeter using ultrasonic transducers connected to separate transformers for phase detection  
A vortex-shedding flowmeter uses two ultrasonic transducers to generate an acoustic beam at a selected carrier frequency. Vortices generate fluid oscillations that are detected when they pass...
8671775 Flow rate measuring device  
When a flow rate is equal to or more than a reference flow rate, a reference voltage is changed to a level capable of measuring stably to thereby realize the improvement of measurement accuracy at...
8652552 Apparatus and a method for estimating the air humidity within an oven cavity  
The present invention relates to an apparatus for estimating the air humidity within an oven cavity (14) by using ultrasound waves with at least two different frequencies (f1, f2). Said apparatus...
8639462 Method and system for determining the time-of-flight of a signal  
A method of estimating the time of flight of a burst signal includes: receiving the burst signal; determining the slope of the phase characteristic of the Fourier transform of the received burst...
8613226 Ultrasonic flow meter having ultrasonic sensor with plurality of transmitters for transmitting ultrasonic waves at different frequencies  
An ultrasonic flow meter includes a first ultrasonic sensor, a second ultrasonic sensor, a volume-flow operation portion, a temperature operation portion, a pressure operation portion, and a...
8548755 Flow rate measurement device  
Switching a transmitting and receiving direction of two transducers (2,3) in the forward and the reverse direction, a time differential memory part (17b) storing a propagation time differential...
8485046 Ultrasonic flow meter and method including a test procedure to verify the operation of the electronic  
The invention relates to an ultrasonic gas flow meter and corresponding method of verification, where the ultrasonic gas flow meter comprises at least one signal evaluation unit, memory, piping...
8468897 Measuring system for determining and/or monitoring flow of a measured medium through a measuring tube  
A measuring system for determining and/or monitoring flow of a measured medium through a measuring tube, including: at least one ultrasonic transducer; and at least one control/evaluation unit,...
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...
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...
8402840 Ultrasonic fluid flow meter housing with acoustically matched base  
A device for sensing fluid flow within a pipe, which pipe has a pipe wall, is provided. The device includes a sensor housing and a fluid flow meter. The sensor housing includes at least one...
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...
8396675 Method and apparatus for determining discharge flow rate and use of the apparatus  
The object is to facilitate determination of a flow rate of fluid discharged from a discharge opening. Intensity of a supersonic wave generated at and propagated from a discharge opening in...
8374806 Ultrasonic phase-shift detection device  
An ultrasonic phase-shift detection device includes a clock generator, a divider, a first counter, a comparator, a phase detector and a second counter. The divider is provided for dividing the...
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...
8239157 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...
8229686 Apparatus and method for measuring liquid and gas flow rates in a stratified multi-phase flow  
A method and apparatus for measuring a flow rate of a component of a stratified two-phase fluid flow within a substantially horizontally extending pipe is provided. The method includes the steps...
8186229 Ultrasonic flow meter having a port cover assembly  
An ultrasonic flow meter for measuring the flow of a fluid through a pipeline. In some embodiments, the ultrasonic flow meter includes a spool piece, a transducer assembly, and a port cover...
8181534 Ultrasonic flow meter with transducer assembly, and method of manufacturing the same while maintaining the radial position of the piezoelectric element  
A transducer assembly for an ultrasonic flow meter comprises a piezoelectric capsule. In an embodiment, the piezoelectric capsule includes a housing having a central axis, a first end, a second...
8181533 Ultrasonic flow meter and transducer assembly with isolated transformer capsule  
In an embodiment, an ultrasonic flow meter comprises a spool piece including a throughbore and a transducer port extending from the outer surface of the spool piece to the throughbore. In...
8170812 Method and system for detecting deposit buildup within an ultrasonic flow meter  
Methods and systems for detecting deposit buildup within an ultrasonic flow meter are disclosed. At least some of the illustrative embodiments are ultrasonic flow meters comprising a spool piece...
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...
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...
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,...
8132469 Ultrasonic flow meter with transducer assembly having a rotatable receptacle and elbow connector  
An ultrasonic flow meter for measuring the flow of a fluid through a pipeline. In an embodiment, the flow meter comprises a spool piece including a throughbore and a transducer port extending to...
8109268 Device for detecting a gas volume flow  
A device is provided for detecting a gas volume flow, especially for a respirator. The device includes a flow sensor, which surrounds a lumen for guiding the gas volume flow, and the flow sensor...

Matches 1 - 50 out of 363 1 2 3 4 5 6 7 8 >