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8997584 Radial mode transducer flow meter  
An edge of a piezoelectric disk transducer is biased into an external wall of a flow passage by a spring. The disk is then driven at a radial mode resonant frequency to project acoustic energy...
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...
8880363 Method and apparatus for the measurement of the mass fraction of water in oil-water mixtures  
An apparatus for measuring the mass fractions of water and oil in a flowing mixture of oil and water through a pipe includes a sensor portion that measures sound velocity and temperature of the...
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...
8505391 Flange mounted ultrasonic flowmeter  
An ultrasonic transducer includes a piezoelectric element that is attached to a sonic lens, a support ring that holds the piezoelectric element, a flange, and a spoke. One end of the spoke is...
8336394 Device for measuring the flow rate of a fluid flowing in a pipe  
A device (10) for measuring the flow rate of a fluid flowing in a pipe, especially for a transaction between a hydrocarbon supplier and a hydrocarbon purchaser is provided. The device (10) has a...
8245582 Method and apparatus for measuring a gas flow velocity  
The invention relates to a method of measuring a gas flow velocity using an ultrasonic gas flow meter, wherein said ultrasonic gas flow meter includes a horizontal piping through which gas can...
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...
7987732 Ultrasonic measuring unit having integrated humidity analysis  
An ultrasonic measuring unit and a method for detecting ultrasonic signal run-times, in which the ultrasonic measuring unit has two ultrasonic transducers for coupling ultrasonic signals into a...
7958786 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...
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...
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...
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,...
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...
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...
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...
7568398 Ultrasonic flow sensor with repeated transmissions  
A transit-time flow sensor determines a rate at which fluid flows by measuring a propagation time difference between upstream and downstream acoustic transmissions. This may involve providing an...
7500403 Ultrasonic flow sensor having interlaid transmitting and receiving elements  
An ultrasonic flow sensor for measuring the volumetric flow rate of a flowing medium through a flow channel having a transducer array which is situated within the flow cross section of the flow...
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...
7380470 Ultrasonic flow meter including turbulators  
Measuring volume flows or mass flows in the intake system of motor vehicle internal combustion engines plays an important role in reducing harmful emissions. Therefore, an ultrasonic flow meter...
7257495 Flow meter filter system and method  
A flow meter filter system (200) according to an embodiment of the invention includes a noise pass filter (203) configured to receive a first version of a flow meter signal and filter out the flow...
7254494 Ultrasonic signal processing method and applications thereof  
An ultrasonic signal processing method for improving the signal-to-noise ratio in ultrasonic measurements comprises the transmission of a predefined timed sequence of a number of ultrasonic burst...
7240566 Device for positioning a clamp-on flowmeter on a container  
An apparatus for the positioning of a clamp-on flow measuring device on a containment, which has a medium flowing through it. The apparatus includes at least two ultrasonic transducers, which emit...
7093502 Ultrasonic gas flowmeter as well as device to measure exhaust flows of internal combustion engines and method to determine flow of gases  
An ultrasonic gas flowmeter includes a measuring pipe with flowing gas, transmitting and receiving sound transducers, transmission and reception electronics, and evaluation electronics. The sound...
7044001 Sonic- or ultrasonic flowmeter  
A sonic- or ultrasonic flowmeter, suitable for replacement of differential pressure flowmeters, comprising: a pipe segment, to be connected to a first and a second pipe, each having a diameter,...
7039530 Fluid measurement  
Techniques for fluid measurement include the ability to introduce a vibration to a container wall and to detect the vibration after the vibration has propagated at least partially around the...
7000485 Flow measurement system with reduced noise and crosstalk  
A flow measurement system including at least first and second ultrasonic transducers coupled to an existing conduit, a damping material about the conduit between the first and second ultrasonic...
6947851 Transceiver circuit for an ultrasonic flowmeter  
A transmitting and receiving circuit for an ultrasonic flowmeter. In such circuits, an ultrasonic transducer is typically used as both transmitter and receiver. This is obtained by using switching...
6928369 Ultrasonic current meter  
The present invention provides a small, low power consumption ultrasonic flow velocity meter. The burst signal generation section 110 generates two kinds of burst signals with a phase difference...
6907361 Ultrasonic flow-measuring method  
An ultrasonic flow-measuring method determines the flow rate of a medium flowing through a line is determined by measuring the runtime of an ultrasonic signal that travels from a first ultrasonic...
6877387 Method for measuring displacement of a fluid in a conduit  
The invention concerns a method for measuring the displacement of a fluid in a conduit, by measuring the transit time of ultrasounds between two transducers (12, 13), in one direction and in the...
6826965 Anti-parallel tag flow measurement system  
A tag flow measurement system wherein a first and a second measurement path are provided across a flowing fluid, and a receiver in each path receives signals modulated by scatters in the fluid....
6820500 Small pipe bore ultrasonic flowmeter detector  
A flowmeter detector for determining the flow volume of a fluid medium that includes a measuring line having first and second ends and a fluid medium entry and exit ports adjacent the fist and...
6748812 Flow rate measuring apparatus  
A flow rate measuring apparatus includes: flow rate detection section 2 and 3 provided in a fluid flow path 1; a measuring section 10 for measuring an output from the flow rate detection sections...
6745632 Method for measuring ultrasonic transit times  
Embodiments of the invention provide an algorithm for enhancing the transit time measurement of an ultrasonic wave through a fluid, and criteria for evaluating the suitability for various...
6694824 Flow measuring device  
A flow meter includes a flow path through which a fluid flows; a pair of transceivers for sending and receiving an ultrasonic wave propagating across the flow path; and a flow calculation section...
6634239 Ultrasonic fluid quality sensor system  
A system for determining the composition of a multiple-component fluid and for determining linear flow comprising at least one sing-around circuit that determines the velocity of a signal in the...
6634240 Zero crossing detector and method of determining a zero crossing point  
A zero crossing detector has an analyzer which determines a zero level crossing of a currently input electrical pulse packet and which emits a trigger signal indicative of a determination having...
6629467 Method and a device for determining the flow rate of a flowing medium  
In a method for determining the flow rate of a fluid flowing in a channel (2), the fluid being constituted by a liquid or a gas, two pulse shaped, oscillating signals are sent through the medium...
6626049 Clamp-on steam/gas flow meter  
A clamp-on ultrasonic measurement system for a gas or other fluid typically of low acoustic impedance such as low pressure steam or flare gas. The system includes a first ultrasonic signal...
6622572 Ultrasonic flowmeter for controlling the gain of an amplifier for amplifying received signals  
The amplifying gain is controlled by means of a data reduction equipment on the basis of the control signal input into the amplifier for amplifying the received signal propagated through the fluid...
6625549 Equipment specifying system  
An equipment specifying system of the present invention includes: a flow path for supplying gas to a plurality of pieces of equipment; an ultrasonic propagation signal measuring section for...
6609430 Low profile transducer for flow meters  
A low profile transducer (11, 12) is provided for use in flow meter for pipes of small diameter. The transducer (11, 12) has a transducer (18) or other form of transducer which transmits and...
6595071 Estimation of error angle in ultrasound flow measurement  
A method for estimating fluid flow in a conduit using a probe with four transducers is provided. The method includes generating two transit time measurements and compensating for an error angle in...
6587796 Ultrasonic flowmeter  
An ultrasonic flowmeter, wherein upstream and downstream receive signals are A/D-converted and thereby the discrete values thereof are determined; a cross-correlation between the upstream and...
6568281 Ultrasonic-wave propagation-time measuring method, gas-pressure measuring method, gas-flow rate measuring method, and gas sensor  
An ultrasonic-wave propagation time measuring method which enables determination of accurate propagation time, a gas-pressure measuring method, a gas-flow-rate measuring method, and a gas sensor....
6552336 Non-invasive, opto-acoustic water current measurement system and method  
A method and system are provided for measuring water current. An acoustically-modulated beam of radiation is transmitted to a target location on the surface of a body of water. As the beam...
6546810 Process and device for measuring the velocity of flow of a fluid stream  
A process and device for measuring the velocity of flow of a fluid stream by measuring the difference between the respective traveltimes of acoustic pulses emitted by means of a generator (G)...
6539812 System for measuring the flow-rate of a gas by means of ultrasound  
An improved system for measuring the flow-rate of a gas by means of ultrasound, including a tubular element in which a plurality of openings are formed to allow one or more gas-flows to flow into...

Matches 1 - 50 out of 126 1 2 3 >