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4679947 |
Method and apparatus for measuring steam quality
A method and apparatus for measuring steam quality of wet or two-phase flowing steam includes a flow-through densitometer comprised of two parallel tubes connected to two common nodes, a vibrator...
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4677842 |
Ultrasonic density measurement
The density of polyethylene is determined by measuring the velocity of ultrasound through the material. The determination of density is based on the correlation between the velocity of ultrasound...
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4674322 |
On-line instrument for simultaneously measuring the viscosity, density, and surface tension of a fluid comprising a gas dissolved in a liquid
An instrument for simultaneously measuring the viscosity, density, and surface tension of a fluid comprising a gas dissolved in a liquid, at the operating conditions of the fluid, employing an...
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4671099 |
Device for measuring the thermodynamic characteristics of a fluid
An enclosure 1 has a measurably variable volume chamber 2, a control for controlling the temperature of the fluid contained therein and apparatus for measuring the pressure of the fluid. The...
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4662221 |
Method and apparatus for measuring material
A method and apparatus are disclosed which relate to measuring the quantity and thermal insulating value of fibrous material as it is delivered from a source to another location. A feeder mechanism...
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4655075 |
Vibrating tube densimeter
A vibrating tube densimeter characterized by separate electrical conductors attached to and moving with the tube. By interaction with a constant magnetic field in which they move, and in...
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4640128 |
Mechanism for proper alignment of sensor probes with fluid sample chamber
Apparatus for correctly aligning a pair of sensor probes relative to a sample chamber location in a biological fluid sensor apparatus for sensing fluid in a sample chamber. The sensor probes are...
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4628739 |
Device for measuring the pressure of a gas like medium
A piezoelectric device for measuring the pressure of a gas like medium comprises two oscillators disposed opposite to each other in a substantially closed system by intermediate introduction of the...
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4624129 |
Acoustical dry product density sensor
A device for installation on the auger filler cone of dry product dispensing equipment which comprises one or more ultrasonic resonators arranged so as to measure the acoustic impedance of the...
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4614115 |
Ultrasonic process and apparatus for monitoring and measuring the evolution with time of physico-chemical, biological or bacteriological phenomena
Ultrasonic process and apparatus for monitoring and measuring the evolution with time of physico-chemical and biological phenomena. There is plunged into the medium or media (4) to be monitored a...
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4608869 |
Single particle detection system
In order to identify the density of a particle, an acoustic wave is focused on the particle and the reflected wave is detected by the focusing transducer. The ratio of the Fourier transform of the...
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4602498 |
Densitometer
There is provided a pressurized flow densitometer for the determination of he PVT properties of fluids. The densitometer comprises a tube flown through by the fluid to be tested, an exciter and...
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4601200 |
Measuring apparatus
A measuring apparatus, including a measuring device; a measuring element secured at one of its ends to the measuring device; a measuring body secured on the free end of the measuring element; a...
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4583393 |
Ultrasonic density meter with damping
A density meter includes a main body having a vertically elongated chamber to contain a test fluid. A passageway in the main body connects to the chamber near its bottom end. The passageway spans...
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4574639 |
Pressure force measurement apparatus and method
Fluid density measuring apparatus and method for directly measuring fluid density or indirectly measuring pressure, temperature, acceleration, flow velocity, differential pressure and other...
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4566312 |
Apparatus and process for automatically determining fat contents of foods
Apparatuses and processes are described for the automatic determinations of fat contents of foods, such as dairy products, e.g., milk, wherein automatic density and solids content determining...
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4550768 |
Compactability measurement method and apparatus for sand casting
A compactability system measures the compactability of granular material such as sand as used in a sand casting foundry system. The compactability is displayed on a meter, recorded by a chart...
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4546641 |
Densitometer
A vibration densitometer including a synchronous detector, a threshold detector, an integrator, an electromagnetic bridge driver, a piezoelectric crystal pick-off, a voltage controlled oscillator...
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4530234 |
Method and system for measuring properties of fluids
Method and system for measuring properties of fluids, particularly of reservoir fluids involved in enhanced oil recovery, comprising a pair of high pressure cells, each one of the cells having a...
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4526480 |
Fluid density temperature measurement apparatus and method
Fluid density measuring apparatus and method for directly measuring fluid density or indirectly measuring pressure, temperature, acceleration, flow velocity, differential pressure and other...
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4524610 |
In-line vibratory viscometer-densitometer
A rotational vibratory viscometer-densitometer for in-line process control and similar applications, having an elastic hollow metal tube extending between two clamps, and a relatively rigid...
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4522068 |
Ultrasonic densitometer for liquid slurries
Apparatus employing ultrasonic pulse production at a transmit transducer at a known frequency is received at a receive transducer for sampling a liquid slurry of known composition, but unknown...
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4495818 |
Cylindrical vibrator type pressure transducer
A pressure gauge for determining the pressure applied to a cylindrical vibrator by measuring the resonance frequency of the vibrator. The vibrator comprises a thin-wall cylindrical portion, a thick...
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4493215 |
Vibrator damping flow meter
An electromagnetically excited vibrator with arms carrying baffle members at their ends that are immersed in the flow to be measured is mounted at one or more vibration nodes to reduce loss of...
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4491009 |
Electronic circuit for vibrating tube densimeter
A method and electronic circuit for measuring the density of substances flowing through an oscillating container densimeter that measures the temperature of the oscillating container to determine...
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4480461 |
Vibration instrument
Apparatus for producing an output signal or indication directly proportional to the density of one or more gases or liquids. A probe holds a vibrating vane immersed in a fluid. The probe is...
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4470294 |
Method and apparatus for simultaneous determination of fluid mass flow rate, mean velocity and density
This invention relates to a new method and new apparatus for determining fluid mass flowrate and density. In one aspect of the invention, the fluid is passed through a straight cantilevered tube in...
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4466272 |
Fluid density transducer
A fluid density transducer with a vibrating tube 16 coupled to excitation pick-up transducers 32 utilizes an elliptical tube 16, having a small degree of ellipticity, to compensate for the...
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4449414 |
Fluid-responsive apparatus
Apparatus for measuring mass flow or density of fluid has a turbine mounted resiliently by torque rods within the fluid-flow line. The turbine has a number of vanes that extend radially to define...
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4445389 |
Long wavelength acoustic flowmeter
A nonintrusive instrument for measuring the volume flowrate of, and the speed of sound in, an arbitrary fluid in a pipe, tube or duct. The sound speed measured is that of a stationary fluid even...
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4442700 |
Ultrasonic hydrometer
The disclosed ultrasonic hydrometer determines the specific gravity (density) of the electrolyte of a wet battery, such as a lead-acid battery. The hydrometer utilizes a transducer that when...
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4429564 |
Vibration type density meter
A vibration type density meter includes a mechanical oscillator or resonator having a resonance frequency variable with the density of a specimen fluid around the oscillator. The resonator is of a...
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4420983 |
Mass flow measurement device
A device for measuring the mass flow of a fluid consists of a body which is arranged to resonate under the influence of a travelling flexure wave. Various embodiments of the invention are...
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RE31450 |
Method and structure for flow measurement
Apparatus and method for mass flow measurement utilizing a substantially "U" shaped conduit mounted in a cantilever manner at the legs thereof, means for oscillating the conduit, and means for...
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4411161 |
Mass flowmeter or the like
A quartz tuning fork in a chamber adjacent a gas pipeline carrying a turbine flowmeter. The chamber is connected across the flowmeter turbine to receive a gas at a flow rate high enough to cause...
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4362048 |
Apparatus for use in the measurement of a variable
Apparatus for use in the measurement of a variable comprises a housing; a first transducer which is mounted within the housing and which is arranged to produce an electrical transducer output...
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4361052 |
Sampling of granular material for analysis
A method of and apparatus for sampling granular material where a substantially vertical sampling tube is subjected to axial, and/or rotational oscillations to reduce the vertical vector component...
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4349881 |
Vibration instruments
A quartz tuning fork is provided which may be employed in several instruments for measuring the properties of fluids. The tuning fork may be employed, for example, in a gravitometer, a barometer,...
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4345456 |
Densitometer
A vibration densitometer probe including an internal piezoelectric crystal, a canted vane, and an isotropic ring to support the vane.
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4297872 |
Vibration type transducer
A vibration type transducer is provided in which various physical quantities, for example, the pressure, density, force and temperature are measured from the natural frequencies of the mechanically...
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4297608 |
Measuring equipment for acoustic determination of the specific gravity of liquids
The invention relates to a measuring probe for the acoustic determination of the specific gravity of a liquid. The probe includes a holder to which is attached at opposite ends thereof a ceramic...
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4283936 |
Vibration densitometer assembly
A vibration densitometer probe assembly including a web partly covering a bore in an annular support, the web having a central hole therethrough, a probe shaft sealed through the hole, and a...
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4282742 |
Densitometer
A vibration densitometer having a permanent magnet biased magnetostrictive drive unit, a maximum efficiency, and an automatic search for a resonant frequency signal.
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4275585 |
Vibrator type densitometer
A densitometer of the vibrator type is disclosed wherein a spring mass system is immersed in a liquid whose density is to be determined. The system includes a pair of coaxial cylindrical masses in...
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4265125 |
Flowmeter method and apparatus
A flowmeter determines the density of a fluid stream by periodically shifting a carrier sonic signal at a carrier modulation frequency and detecting the peak received energy after the carrier sonic...
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4262523 |
Measurement of fluid density
A vibrating fluid density transducer 10 provides a gas density measurement D, used in conjunction with a flowmeter signal f B to meter the mass of gas fed through a pipeline. D is subject to...
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4240285 |
Measurement of the density of liquids
A device for measuring the density of a liquid relies on the generation of resonant modes in a torsional vibration set up in a paddle which is immersed in the liquid. The frequency at which a...
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4235099 |
Ultrasonic apparatus and method for measuring the density of liquid
Ultrasonic waves are applied to a test liquid of an unknown density, and the acoustic parameters of the liquid are measured. The difference is then detected between the acoustic parameters of the...
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4232544 |
Transducer for sensing a parameter of a fluid
A transducer for sensing density, pressure or pressure difference in fluids comprises a resonantly vibratable cylinder as its sensing element. The cylinder has a mounting ring at one end, the...
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4217774 |
Apparatus for measuring the value of a fluid variable
Apparatus for measuring the value of a fluid variable comprises a vibrator tube through which the fluid may be passed and which is mounted for clamped-clamped flexural vibration in a holding...
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