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7610795 |
Method for adjusting a mechanical natural frequency
A method serves to adjust a mechanical natural frequency of a hollow body which at least partly comprises a ductile material, in particular a pickup housing of a measurement pickup or a measurement...
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7597008 |
Method and apparatus for determining flow pressure using density information
A method and apparatus is disclosed that determines the density ( 602 ) of a material flowing through a Coriolis flow meter. The density is used to infer the pressure ( 608 ) of the flowing...
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7596987 |
Apparatus and method for providing a density measurement augmented for entrained gas
A flow measuring system combines a density measuring device and a device for measuring the speed of sound (SOS) propagating through the fluid flow and/or for determining the gas volume fraction...
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7581429 |
Microfluidic device and method of operation
A microfluidic device and method for assessing properties of a fluid. The device includes a base supported by a substrate and a tube extending from the base and spaced apart from the substrate...
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7562557 |
Flexural resonator sensing device and method
A flexural resonator includes a piezoelectric material. At least a portion of an electrode having a first surface and a second surface is embedded in the piezoelectric material such that the...
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7552619 |
Measurement of density and viscoelasticity with a single acoustic wave sensor
A sensor, method and system, for measuring certain characteristics of a fluid. The sensor utilizes a piezoelectric device having at least two tightly coupled resonators providing a two pole...
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7549319 |
High pressure resonant vibrating-tube densitometer
A method of manufacturing a high pressure vibrating tube densitometer comprising enclosing twin flow tubes within an outer shell, wherein the outer shell comprises portals for the installation or...
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7530268 |
Device for determining and/or monitoring at least one physical or chemical process variable of a medium in a container
An apparatus for determining and/or monitoring at least one physical or chemical, process variable of a medium and includes at least one mechanically oscillatable unit and at least one...
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7523640 |
Acoustic fluid analyzer
A method of determining properties of a formation fluid based on measurements of fluid sound speed, a measurement of fluid density, or both. The properties include compressibility, thermal...
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7454981 |
Apparatus and method for determining a parameter in a wet gas flow
In an apparatus for measuring a parameter of a wet gas flow, a gamma densitometer is provided and configured to non-intrusively measure the density of the wet gas flow. A sonar based flow meter is...
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7437909 |
Oscillatory measurement device with visual recorder
An oscillatory measurement system is disclosed that includes a visual recorder for detecting irregularities such as bubbles in a fluid to be measured. Techniques are provided for scanning the...
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7426866 |
Acoustic liquid dispensing apparatus
A liquid dispensing apparatus for dispensing droplets of a liquid, and methods for measuring various fluid parameters of the liquid are described. The liquid dispensing apparatus comprises a...
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7409851 |
Detection of small bound mass
Prefabricated catalyzing adsorption sites are incorporated into small oscillators. In one embodiment, the sites are formed of precisely positioned gold anchors on surface micromachined oscillators....
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7399609 |
Staphylococcus detection
The invention relates to methods of detecting staphylococcus.
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7360399 |
Apparatus for measuring a density and/or a viscosity of a fluid
The apparatus includes a sample tank for collecting and quieting a volume fraction of the fluid to be measured. The sample tank is in communication, at least at times, with a fluid containment via...
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7334452 |
Method for characterizing materials by using a mechanical resonator
Methods for monitoring a fluid composition include placing a mechanical resonator in the fluid composition and oscillating the resonator. The resonator can be a tuning fork resonator having tines...
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7257988 |
Densitometer with pulsing pressure
Techniques for measuring a density of a liquid within a fluid that includes both a liquid and a gas are described. A pressure of the fluid oscillates according to a time-varying function, which...
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7254987 |
Method and system for conducting an on-site measurement of the density of an insulation material
Method for conducting an on-site measurement of a density value of an insulation material is provided, comprising: (a) providing an acoustic source for emitting a sound wave; (b) directing the...
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7216543 |
Mass measurement system and method using measurement of frequency shift of vibrator
The present invention relates to a mass measurement system and method capable of precisely measuring the mass of a sample in a gravity-free environment. The mass measurement system using...
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7191638 |
Device for determining and/or monitoring at least one physical parameter and having a piezo-drive for oscillation-excitation and -detection
A device for determining and/or monitoring at least one physical parameter of a medium, having at least one mechanically oscillatable unit and at least one drive-/receive unit. The drive-/receive...
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7152460 |
Apparatus and method for compensating a coriolis meter
A flow measuring system is provided that provides at least one of a compensated mass flow rate measurement and a compensated density measurement. The flow measuring system includes a gas volume...
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7134320 |
Apparatus and method for providing a density measurement augmented for entrained gas
A flow measuring system combines a density measuring device and a device for measuring the speed of sound (SOS) propagating through the fluid flow and/or for determining the gas volume fraction...
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7117717 |
Densitometer with pulsing pressure
Techniques for measuring a density of a liquid within a fluid that includes both a liquid and a gas are described. A pressure of the fluid oscillates according to a time-varying function, which...
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7073370 |
Method and apparatus for characterizing materials by using a mechanical resonator
A method and apparatus for measuring properties of a liquid composition includes a mechanical resonator, such as a cantilever, connected to a measurement circuit. The mechanical resonator can be...
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7059172 |
Phase flow measurement in pipes using a density meter
The present invention discloses an apparatus for determining the density and the phase fraction of a fluid flowing in a conduit. The apparatus comprises a fiber optic density meter situated along...
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7059171 |
Fluid density measurement using acoustic pressures for industrial sensing applications
The density of at least one fluid in a pipe 12 is determined using a pair of effective sound speeds a 1eff and a 2eff of the fluid/pipe system. The pair of effective system sound speed...
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7059169 |
Fluid aeration test apparatus and method
A test apparatus for measuring the air entrainment characteristics of a fluid includes a reservoir for containing the fluid, an aerator apparatus to cause air entrainment of the fluid, and a...
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7024917 |
Method and apparatus for an acoustic pulse decay density determination
An acoustic transducer is in contact with a near wall that has a much different acoustic impedance than a fluid. The transducer transmits an acoustic pulse into into the wall (such as a plate, a...
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6986276 |
Deployable mandrel for downhole measurements
The disclosed apparatus comprises a phase fraction meter and a compliant mandrel deployable within a production pipe, and may further comprise a flow velocity meter. The mandrel allows the...
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6971259 |
Fluid density measurement in pipes using acoustic pressures
The density of at least one fluid in a pipe is determined using a pair of effective sound speeds a 1eff and a 2eff of the fluid/pipe system. The pair of effective sound speed measurements is...
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6957565 |
Method and apparatus for characterizing materials by using a mechanical resonator
A method for measuring properties of a fluid that includes oscillating a tuning fork resonator in a fluid. The invention is particularly suitable for in-line monitoring of various physical and...
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6938462 |
Device for measuring viscosity and/or density
A device for measuring the viscosity and/or the density of a fluid using a resonator capable of mechanical vibrations. The resonator is capable of being brought into contact with the fluid. An...
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6918283 |
System and method for demonstrating and investigating brownian motion effects on a diamagnetically suspended particle
An apparatus for demonstrating, investigating and observing Brownian motion and temperature of a medium, such as gas or liquid, uses a small particle which is diamagnetically suspended in the...
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6912904 |
Single tube densitometer
A measurement device is provided that determines fluid properties from vibration frequencies of a sample cavity. In one embodiment, the measurement device includes a sample flow tube, vibration...
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6885491 |
Diffraction-optical component, illumination system and exposure system comprising such a diffraction-optical component as well as an exposure method employing such an exposure system
A diffraction-optical component for providing a radiation-diffracting grating structure is proposed, comprising a surface wave device including a substrate 43 , a surface wave source 47 ...
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6874356 |
Method and device for monitoring and controlling a process
A method and device for monitoring and controlling a pharmaceutical, chemical or food process, in which the biological activity and/or the bio-mass of micro-organisms in the process is monitored,...
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6848299 |
Quartz crystal microbalance with feedback loop for automatic gain control
An analytical apparatus, such as a quartz crystal microbalance, comprises a piezoelectric sensor and an oscillator circuit, coupled to the sensor, to oscillate at a frequency substantially...
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6845663 |
Method and device for determining and/or monitoring the level of a medium in a container, or for determining the density of a medium in a container
The invention relates to a method and a device for determining and/or monitoring the fill level (F) of a medium in a container or, respectively, to a method and a device for establishing the...
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6826949 |
Method and apparatus for guiding a liquid sample towards a sensing surface
A liquid sample sensing device comprises a set of stackable liquid sample base units that are adapted to be stacked together to form multiple sample volumes that are substantially sealed, each with...
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6813928 |
Sensor system and method employing shared transducer elements
A transducer-based sensor system including a first transducer system and a second transducer system spaced from the first transducer system so as to define a sample area between the first...
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6786077 |
Wide beam clamp-on ultrasonic densitometer
A method for determining the density of a fluid in a pipe. The method includes determining a first, second, and third reference reading of a pipe using a transmitter transducer, a receiver...
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6763698 |
Self calibrating system and technique for ultrasonic determination of fluid properties
A system and technique for determining fluid properties includes an ultrasonic transducer 30 on a first surface 42 of a solid member 40 . An opposed second surface 44 of the member 40 is...
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6732570 |
Method and apparatus for measuring a fluid characteristic
A tube through which fluid flows is installed in a fluid system. A piezoelectric driver is mounted on the exterior of the tube. A piezoelectric sensor is also mounted on the exterior of the tube. A...
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6722200 |
Apparatus and method for ultrasensitive nanoelectromechanical mass detection
The invention relates to the application of the techniques of nanoelectromechanical systems (NEMS) to ultrasensitive mass detection. A pulsed flux of atoms is adsorbed onto the surface of a 32.8...
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6684683 |
Method and apparatus for characterizing the barrier properties of members of combinatorial libraries
A method and an apparatus for characterizing the barrier properties of an array of coatings. The method including providing a plurality of acoustic wave devices, wherein each of the plurality of...
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6651484 |
Device for measuring the specific density of a gaseous or liquid medium
A device for measuring the specific density of a gaseous or liquid medium ( 8 ) having an acoustic transducer ( 1 ), which is active on both sides, and further having cylindrical delay paths ( 4, 5...
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6634214 |
Method and apparatus for measuring the relative density of a gas
A method and apparatus for measuring the relative density of a gas. The apparatus includes a chamber to which a gas in question, for example natural gas, is supplied through an inlet and leaves...
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6557416 |
High resolution biosensor system
A high resolution biosensing system for detecting and identifying a biochemical material to be tested by using proportional relationship between frequency variation of oscillation and mass of the...
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6546784 |
Laser apparatus for measuring dirt density on steel plates
The invention is an apparatus that measures dirt density on steel plates, characterized by including a pulsed laser that impinges on the inspected plate, and a microphone that detects the sound...
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6543274 |
Sensor array and method for determining the density and viscosity of a liquid
A sensor arrangement for ascertaining the density and the viscosity of a liquid is proposed, having an arrangement comprising at least two basic sensor elements, at least one of which can be wetted...
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