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Match Document Document Title
7389786 Ultrasonic and sonic odorization systems  
A system is shown for injecting a chemical, such as an odorant, from a chemical supply into a fluid containing system such as a natural gas pipeline or an LPG pipeline. A tank of odorant is...
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 for...
7363174 Apparatus and method for measuring a fluid flow rate profile using acoustic doppler effect  
An apparatus and method for measuring a flow velocity profile of fluid traveling in a pipe or conduit uses an ultrasonic wave transmitted from an ultrasonic wave transducer mounted at an angle on...
7360450 Flowmeter  
A flowmeter for measuring a flow velocity of a fluid in a pipeline includes a measuring tube having opposite ends. Two ultrasonic transducers are disposed respectively at the opposing ends of the...
7290455 Driver configuration for an ultrasonic flow meter  
A method and system for driver configuration for an ultrasonic meter. At least some of the illustrative embodiments are ultrasonic meters comprising a spool piece that couples within a flow of...
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...
7181981 Ultrasonic tomograph, system and method for ultrasonic tomographic measurement using same  
The invention relates to an ultrasonic tomograph for spatial and temporal characterisation of fluids in motion such as air and water. This tomograph comprises a plurality of pairs of...
7124621 Acoustic flowmeter calibration method  
An acoustic flowmeter calibration method and sampling system address a variation in acoustic transducer delay time with increasing temperature. In one aspect, calibration of the path length between...
7073395 Ultrasonic flowmeter and ultrasonic flow rate measuring method  
An ultrasonic flowmeter of the present invention includes: first and second ultrasonic transducers that send and receive an ultrasonic wave and are arranged so as to form a propagation path for the...
6925891 Ultrasonic flowmeter and method of measuring flow volume  
An ultrasonic flowmeter arranged to perform measurement with high accuracy has first and second ultrasonic transducers 1, 2 which transmit and receive ultrasonic waves, and which are placed so as...
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...
6901812 Single-body dual-chip Orthogonal sensing transit-time flow device  
An ultrasonic sensor having a pair of ultrasound transducers adapted to be inserted in and being able to perform at a single site of introduction into a duct. The ultrasonic sensor measures a...
6895825 Ultrasonic transducer assembly for monitoring a fluid flowing through a duct  
An ultrasonic transducer assembly for helping monitor a fluid flowing through a duct is disclosed herein. The assembly includes: (1) a piezoelectric transducer element having a first contact...
6772643 Flow meter  
A flow meter measures a flow rate of fluid flowing through a flow passage based on a duration of propagation of an ultrasonic wave along the flow passage. A signal of the received ultrasonic wave...
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 waveforms...
6729191 Electrical inductive flowmeter circuits including coil excitors and current regulators  
An inductive flowmeter for measuring the flow velocity of a conductive fluid has an electrical circuit that advantageously utilizes minimal analog components, and hence has advantages over...
6708570 Flow rate measurement method, ultrasonic flow rate meter, flow velocity measurement method, temperature or pressure measurement method, ultrasonic thermometer and ultrasonic pressure gage  
An flow rate measurement method and a ultrasonic flow meter is provided, which can measure a flow velocity accurately by utilizing a ultrasonic wave having a frequency by which a phase difference...
6691582 Gas type identification system  
A gas type identification system includes: a flow path; an ultrasonic measurement section disposed in the flow path, the ultrasonic measurement section including a pair of ultrasonic transducers; a...
6675111 Method and apparatus for measuring flow velocity and method and apparatus for measuring flow rate  
Disclosed is a method and apparatus for measuring flow velocity and flow rate of a fluid in a tube member or the like with high precision. A flow vel0ocity measuring method has: a step of allowing...
6647806 Turbulence conditioner for use with transit time ultrasonic flowmeters  
An apparatus for determining fluid flow in a pipe. The apparatus includes an ultrasonic flowmeter adapted to be placed with the pipe for measuring fluid flow in the pipe. The apparatus includes a...
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...
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...
6604433 Ultrasonic transducer and ultrasonic flowmeter  
The present invention provides an ultrasonic transducer having uniform characteristics. Because the characteristics of a pair of ultrasonic transducer are equalized with each other, measuring...
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. A...
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 transits...
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)...
6526838 Ultrasonic fluid meter with improved resistance to parasitic ultrasound waves  
The invention provides a fluid meter comprising ultrasound transducers, attenuation means for attenuating parasitic ultrasound waves of wavelength λ, and constituted by at least one passage in...
6508135 Liquid flow meter  
A liquid flow meter for directly measuring the velocity of a liquid is disclosed. The liquid flow meter includes a pair transducers arranged facing each other in a conduit through which the liquid...
6487916 Ultrasonic flow metering system  
A system for determining the density, flow velocity, and mass flow of a fluid comprising at least one sing-around circuit that determines the velocity of a signal in the fluid and that is...
6453757 Symmetrical ultrasound gas flow meter housing and related multi-configuration gas flow meter assembly  
An ultrasonic gas meter housing member is configured to provide an associated multi-configuration ultrasonic gas meter assembly. The housing member is installable in an ultrasonic gas flow meter...
6435038 Ultrasonic flow velocity measuring apparatus  
An ultrasonic flow velocity measuring apparatus measures a transit time under the condition a synchronization of an ultrasonic signal having a modulated frequency by PN (pseudo noise) code of a...
6418796 Sonic flow measurement apparatus for tubes including sonically matched plates  
The present invention includes a clamp-on housing for encapsulating or confining a flexible tube or pipe. The housing includes transducers therein for transmitting and receiving sonic energy. A...
6411909 Device for measuring the fluid consumption of a user over a given time  
The invention relates to a device for measuring the fluid consumption of a user over a given measurement time, including a volumetric meter ( 26 ) connected to a central information processing unit...
6382033 Sound damper for ultrasonic waves  
The invention concerns, according to the first teaching, a sound damper for ultrasonic waves in a gas flow, with at least one damping element ( 3 ) that can be inserted into a line for the gas...
6381549 System and method using digital filters and neural networks to determine fluid flow  
An ultrasonic flowmeter using ultrasonic pulses transmitted within a pipe containing flowing fluid determines values, including flow rate or fluid velocity of the flowing fluid. The ultrasonic...
6338277 Flowmeter for attenuating acoustic propagations  
A flowmeter for a medium includes two transducers displaced from each other in the direction of flow of the medium. The flowmeter contains an emitting device which emits acoustic signals in both...
6330831 Stream-cleaned differential reflection coefficient sensor  
An ultrasonic system employs a path through a fluid to determine fluid density by a differential reflection coefficient measurement of fluid impedance Z and a fluid sound speed c. Preferred...
6305233 Digital speed determination in ultrasonic flow measurements  
A method and device (60) is described which measures the speed of a flowing fluid (F) by measuring the difference in time taken for an ultrasonic signal to travel first upstream and then downstream...
6216091 Ultrasonic measurement system with molecular weight determination  
An ultrasonic measurement system performs a signal path measurement by directing ultrasonic signals through a gaseous material in a conduit, and processing the detected signals to determine sound...
6209388 Ultrasonic 2-phase flow apparatus and method  
An apparatus and related method for measuring the properties and individual flow rates of a two-phase flow comprising a gas and a liquid is disclosed. This apparatus and related method also can...
6178827 Ultrasonic flow sensor  
A transit time ultrasonic fluid flow sensor is configured as a self contained modular unit that does not rely on acoustic transmissions through or reflected by a pipe for operation. A highly...
6098467 Acoustic flow meter wherein false readings are identified dependent on upstream and downstream acoustic transit times  
An acoustic fluid flow meter has a timer for determining downstream and upstream transit times values of acoustic pulses transmitted between acoustic signal transceivers, operable alternately as...
6065351 Flow rate measurement method and ultrasonic flow meter  
6058786 Device for measuring a gas flow  
A device for measuring a gas flow, has a measurement chamber and an ultrasonic transceiver unit which can be attached to the measurement (chamber over openings of the measurement chamber and which...
6055868 Ultrasonic flow meter  
An ultrasonic flow meter for determining the flow rate of fluid flowing through tubings. The ultrasonic flow meter comprises a measuring tube having a diameter constant in its entire length, and...
6053054 Gas flow rate measurement apparatus and method  
A gas flow rate measurement apparatus for obtaining a normalized flow rate of a gas having at least one liquid component. The gas travels from an upstream position and in a downstream direction....
6044714 Flowmeter for explosion-hazard environments  
A pulse generator (48) in a flowmeter system (10) transmits an excitation pulse to a transducer assembly (12) by way of a signal-conduction medium (20) located in a region subject to an explosion...
6041663 Method and device for determining the flow velocity and/or throughput of a flowing fluid  
In the case of the ultrasonic measuring method and measuring device for determining the flow velocity and/or throughput of a flowing fluid in a channel according to the invention paths are used, of...
6012338 Ultrasonic flow velocity measuring apparatus  
An ultrasonic flow velocity measuring apparatus includes two transducers arranged to form a certain angle to a flow velocity direction to measure flow velocity of a fluid, the two transducers...
Matches 1 - 50 out of 213 1 2 3 4 5 >