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4215566 |
Densitometer with voltage driver
A vibration densitometer having a magnetostrictive drive with a coil and a crystal pickup. A loop circuit including a driver amplifier provides the coil with a voltage twice that ordinarily...
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4194385 |
Densitometer calibration method
A method of calibrating a densitometer to meter two gases of different molecular structures by empirically deriving a hole size function of the indicated error for one gas in the density equation...
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4193291 |
Slow torsional wave densitometer
An ultrasonic densitometer for measuring the density or a density related parameter of a fluid has at least one transducer assembly that transmits and receives torsional waves guided in an axially...
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4192184 |
Mass flowmeter
Disclosed is a mass flow rate meter having two U-shaped flow loops, means for vibrating the flow loops like the tines of a tuning fork, timing means on the loops for sensing the difference in times...
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4177669 |
Device for measuring the density of a fluid
The device includes an oscillation body and an electronic circuitry component connected to an oscillation detector and to plural oscillation generators, and including a period of frequency meter,...
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4170128 |
Apparatus for density determination
An apparatus for measurement of density, particularly of liquids and gases, by determination of the characteristic frequency of a tube-shaped bending-type oscillator which is filled with the...
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4158959 |
Apparatus for measuring the physical properties of material
An apparatus for measuring the physical properties of material in which the sensing means is a tubular sensing member having a longitudial slot extending from one end to the other end. A support...
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4151743 |
Densitometer drive
A vibration densitometer having a magnetostrictive drive with a coil, and a crystal pick-up. A loop circuit including a driver amplifier provides the coil with current which leads the crystal...
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4135383 |
Vibration densitometer probe
A welded vibration densitometer probe to obviate frequency shifts due to temperature changes.
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4132110 |
Vibration type liquid density meter
A vibration type liquid density meter comprising a base, a connector having a mass substantially smaller than said base, two hollow cylindrical elongated pipes each having two ends, one end of each...
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4129031 |
Immersible liquid densitometer
An immersible liquid densitometer is disclosed employing an immersible vibrator. The vibrator includes one or two masses which are resiliently supported and which contain perforations which fill...
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4127028 |
Coriolis mass flow rate metering means
A flow meter for measuring mass flow is disclosed having two vibrating U-shaped tubes, a means for vibrating the tubes, and sensors for detecting the coriolis force couple which results from the...
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4117716 |
Densitometer apparatus
A densitometer and sonic velocimeter are provided through use of a transducer to provide energy transductions and for providing vibratory energy. In this way, longitudinal wave energy can be...
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4114423 |
Device for measuring the density of liquid and gaseous substances and method for operating the device
The device comprises a thin vibratable plate to be introduced into the substances whose density is to be measured, and the plate is held by a holder at a holding point and is vibrated by at least...
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4096745 |
Method and apparatus for measuring mass flow rate of individual components of two-phase gas-liquid medium
A method for measuring the mass flow rate of individual components of a two-phase medium comprises feeding a flow of a medium to be measured through a hollow pendulum, imparting undamped...
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4084425 |
Vibration densitometer
A vibration densitometer having a temperature compensated probe.
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4074562 |
Method and apparatus for measuring fluid specific gravity
A method and apparatus for measuring specific gravity of fluids such as urine. The apparatus includes a housing and a hollow tube mounted in the housing and open at both ends. The housing is...
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4064738 |
Vibration densitometer
A vibration densitometer having a probe including a hollow cylinder.
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4064739 |
Densitometer
A plug for a vibration densitometer probe to obviate calibration shifts caused for a number of reasons.
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4063448 |
Density meter coil assembly
An apparatus for measuring the density of a fluid including a coil assembly comprising a housing of magnetic material having first and second circular end walls and a cylindrical permanent magnet...
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4037459 |
Densitometer
A vibration densitometer including an electromechanical oscillator having an automatic phase control.
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4037461 |
Probe and method of making the same
Vibration densitometer probes having vanes with central weights notched to vibrate at the same frequency when immersed in a fluid at the same density.
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4023400 |
Viscosimeter and/or densitometer
An electromechanical oscillator having a feedback shifted alternately to two different phases, and two digital function generators to derive viscosity and density signals on a time shared basis.
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4020330 |
Densitometer
A vibration densitometer which can be calibrated to an accuracy never before possible, i.e. to within an error of 0.25 percent or less, and in two fluids or gases or gas mixtures, one, both or none...
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4015470 |
Flow measuring method and apparatus
Selected variables of a fluid flowing through a conduit are measured by transmitting acoustic pulses through the conduit wall and fluid stream along normal and oblique transmission paths between...
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4007627 |
Density transducers
A density transducer employs a hollow cylinder capable of vibrating in the circumferential (or hoop) mode as the density sensing element, the cylinder being open at both ends and arranged so that...
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3999421 |
Powder bulk density instrument
A continuous, in-line bulk density instrument is described which provides real time monitoring of a product stream consisting of a free flowing powder. The instrument utilizes a cylindrical tube...
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3984895 |
Density sensing and controlling equipment
Apparatus in a card for sensing and controlling the relative speeds of the feed and doffer rolls in accordance with the sliver density as sensed by error detection circuitry responding to the...
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3983744 |
Method and apparatus for measuring the density of a dirty fluid
Apparatus for measuring the density of a dirty fluid, said apparatus comprising a hollow body adapted to have said dirty fluid passing through its interior; a rigid support member within which the...
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3981183 |
Method and apparatus for measuring a physical property of a fluid material that varies nonlinearly relative to the density of the fluid
A method and apparatus for measuring a physical property of a fluid material, such as concentration, that varies nonlinearly relative to the density of the fluid by measuring the density of the...
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3967490 |
Vibration densitometer
A vibration densitometer having a strain gage pick-up to serve at least four functions one at a time or to serve two, three or four functions in any combination of two, three or four. The strain...
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3958446 |
Discontinuity suppression apparatus for vibration densitometers
An improved well for a densitometer probe for immersion in a pipeline around the probe to effect a flow of a portion of the fluid flowing in the pipeline through the improved well and through and...
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3956922 |
Densitometer probe shield and well
A vibration densitometer probe with a shield and well which have solved a calibration shift problem involving a calibration shift that occurred when the probe was placed in different gases or in...
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3955401 |
Apparatus for determining the density of a fluid
Apparatus for determining the density of a liquid comprises a resilient tube coupled at each end through resilient couplings to support flanges for connection in a pipeline or the like. Two...
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3926035 |
Gravitometer
A gravitometer incorporating two ferromagnetic cantilevered vanes simultaneously vibrated by a spaced ferromagnetic driver at their respective same or different frequencies. The driver provides a...
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3925850 |
Density sensing and controlling equipment
Apparatus in a card for sensing and controlling the relative speeds of the feed and doffer rolls in accordance with the sliver density as sensed by error detection circuitry responding to the...
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3911726 |
Ultrasonic method for measuring of parameters of liquids
An ultrasonic method of determining parameters of a liquid traversing a pipeline in which an ultrasonic wave is directed against a wall of the pipeline at one point along an arc segment through an...
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3910101 |
Devices for measuring density
For density determination for flowing samples, a transducer is applied in accomplishing compensation for temperature-dependency by maintaining by the transducer continuous oscillation of the...
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3906198 |
Net weight oil computer or the like
A net weight oil computer including a vibration densitometer and a turbine flowmeter. The flowmeter produces output pulses at a frequency directly proportional to the rate of volume flow through a...
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3903731 |
Apparatus for determining physical properties
An apparatus for determining the value or change in physical properties of a fluid, particularly viscosity, comprising a conduit that is vibrated longitudinally and wherein the relative movement of...
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3903732 |
Viscosimeter and densitometer apparatus
A viscosimeter and a densitometer are provided through use of a transducer or transducers to provide energy transductions and for providing vibratory energy. In this way, either shear wave energy...
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3902365 |
Mass flow monitoring system and method
A densitometer has an acoustically shielded, temperature insensitive, tuning fork-type density sensing element which incorporates certain design factors and is driven at its natural frequency by a...
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3862568 |
Method of and apparatus for producing fluid gravity and density analogs and flowmeters incorporating gravitometers
Gas flowmeters for indicating total volume flow. The flowmeters incorporate gravitometers having vibration densitometers including spring metal ferromagnetic cantilevered vanes which vibrate when...
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3842655 |
FLUID DENSITY SENSING SYSTEMS
A net oil computer including a vibration densitometer and a turbine flowmeter. The flowmeter produces output pulses at a frequency directly proportional to the rate of volume flow through a...
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3831433 |
APPARATUS FOR MEASURING THE DENSITY OF A FLUID BY RESONANCE
Apparatus for measuring the density of a fluid, and if desired also its mass flow rate, comprises a sensor unit having in unitary assembly a pair of coaxial resonant cylinders each anchored at one...
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3808875 |
DENSITOMETER AND PROBE THEREFOR
A vibration densitometer comprising an electromechanical oscillator including a probe having a thin vane that is vibrated while submerged in a fluid by a magnetostrictive driver. A piezoelectric...
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3805361 |
METHOD OF MAKING A VIBRATION DENSITOMETER
A method of making the temperature sensitivity of a vibrating vane densitometer more or less fit the rate of change of density with respect to temperature of a fluid, the density of which is to be...
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3795136 |
VIBRATION DENSITOMETER APPARATUS
A preamplifier for a vibration densitometer for connection from a piezoelectric crystal and including a differential amplifier having a negative feedback capacitor. Noise discrimination is...
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3776024 |
DENSITOMETER COMPONENTS
A vibration densitometer including a vane adapted to be vibrated, a driver coil located around a magnetostrictive body to vibrate the vane, and a piezoelectric crystal to detect the vane...
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3775597 |
FLUID DENSITY DIGITAL COMPUTER
Apparatus for producing a digital output from a storage register directly proportional to fluid density. A count down counter is preset to STT o /R where S, T o , T and R are constants. Constants...
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