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5142504 |
Ultra-sound detector
A process for detecting a phase boundary surface between layers of fluids which are not intermixable with one another includes the steps of penetrating at least one of the fluids with sound waves...
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5136884 |
Magnetic sight gage sensor
A magnetic sight gage sensor comprises a sensor for determining the liquid level in a process vessel utilizing a magnetic float on the interior of a tube. The tube is connected at different levels...
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5136299 |
Device at a radar level gauge
A device for gauging the level of a fluid in a container with a microwave signal is described. The device comprises a vertical tube (1) mounted in the container, and a transmitter and a receiver...
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5131271 |
Ultrasonic level detector
An ultrasonic level detector includes a transducer for generating and receiving bursts of sonic energy at a surface to locate the position of the surface. In response to receiving a burst of energy...
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5127266 |
Methods for liquid measurement using quasi-static reference subsystem
Methods for measuring liquid levels and leak rates in a storage tank, using an acoustic transducer and a quasi-static reference device that positions an acoustic target within a predetermined...
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5128656 |
Level detecting method and its apparatus
A level detecting method and apparatus wherein a tubular member with one end open has a stationary wave generating means located within the tubular member. The stationary wave generating means...
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5121628 |
Ultrasonic detection system
An ultrasonic detection system having a flat faced radiator for providing a narrow beam of ultrasonic energy with minimal dispersion. The system includes an ultrasonic transmitter and receiver unit...
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5121340 |
Multi-level probe and system for measurement of physical conditions in liquid-containing tanks
A multi-level probe for sonic range measurements utilizes a plurality of parallel reflectors that each include an opening arranged coaxially about a beam of ultrasonic energy transmitted along a...
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5119676 |
Ultrasonic method and apparatus for determining water level in a closed vessel
An ultrasonic method and apparatus for measuring liquid level in a vessel employing an acoustic waveguide (16) connected to an ultrasonic transducer (14) and the vessel (18). Guiding means (24)...
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5105661 |
Method of detecting a level of liquid in a moving cylindrical body
A detection method of a liquid level supplies fluid between a moving cylindrical body such as a parison in a film manufacturing process and an ultrasonic transmitter and receiver or an ultrasonic...
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5099454 |
Liquid presence detector having a composite waveguide for acoustic waves
The detector for detecting the presence of a liquid comprises: a) a metal veguide having a solid cylindrical top first portion of relatively small section with an outside diameter having a first...
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5095748 |
Sonic tank monitoring system
The height of a liquid level from the bottom of a storage tank or the like is accurately determined by using a probe with dual isolated channels to measure the time for an acoustic signal to travel...
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5095747 |
Cryogenic liquid level sensing apparatus
Method and apparatus for measuring the level of a cryogenic liquid in a container using frequency pulses. The time interval between the transmitted and echoed pulse is measured and compared with...
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5085077 |
Ultrasonic liquid measuring device for use in storage tanks containing liquids having a non-uniform vapor density
An ultrasonic liquid level detector mounted in a fill pipe cap. The ultrasonic detector mounted in a fill pipe cap (10) is used in determining a level and/or the volume of a liquid (5) stored in an...
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5076100 |
Magnetostrictive transducer measuring system
A magnetostrictive transducer measuring system for precisely measuring the liquid level of fuel in an underground tank. The system provides for the measurement of the position of one or more...
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5076101 |
Liquid level measurement system for tanks
A system for sensing the level of contents in a container is disclosed. A tubular member is vertically disposed in the container and sealed from the contents of the container. A marker located in...
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5074148 |
Resonance frequency liquid level sensor
A liquid level sensor comprises an elongated tubular member with two open ends contained in an elongated cylindrical container vessel in an arrangement wherein the two extremities of the elongated...
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5070730 |
Device for level gauging with microwaves
A device for gauging the level of a fluid in a container having a gas above the surface of the fluid. The device comprises a microwave transmitter transmitting a microwave radio signal through the...
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5065624 |
Installations for measuring liquid depth
Ultrasonic depth measuring equipment comprising a sensor for emitting ultrasonic pulses in a divergent beam and for receiving the echoes of such ultrasonic pulses wherein the sensor is used in a...
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5062295 |
Dual tube sonic level gage
An accurate measurement of liquid levels in a tank are made using a dual tube sonic level gage. This uses plane waves of sound, in air, propagated in two vertical tubular wave guides to locate the...
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5050430 |
Magnetostrictive linear position detector with temperature sensors
The present invention is a combined magnetostrictive linear displacement detector and plural location temperature detector. The combined apparatus produces a composite signal for transmission on a...
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5043912 |
Apparatus for measuring the level of the interface between a first and a second medium in a reservoir
An apparatus for measuring the level of the interface between two different media in a reservoir comprises a vibratory element adapted to contact both media on all sides, and an amplifier circuit...
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5042298 |
Filling-level indicator
In a filling-level indicator (12), especially for fuel tanks (10) of motor vehicles, flexural waves of the frequency (f) are fed into a sound conductor (11) via a transmitter (13). For the...
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5038611 |
Apparatus and method for providing a temperature compensated liquid level measurement
A system for providing a temperature compensated measurement indicative of the height of a fluid in a vessel includes an acoustic waveguide in fluid communication with the vessel. A reference...
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5036703 |
Method and apparatus for testing liquid fillings in tanks
The invention relates to a method and an apparatus for investigating a filling of liquid in a container, e.g. a fuel tank in respect of actual volume, density, temperature, opacity or other...
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5035140 |
Self cleaning liquid level detector
A method of detecting an effluent level in an aircraft lavatory holding tank and a device for practicing the method. The device uses electrodynamic forces of different values generated by an...
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5031451 |
Fluid level monitor
A fluid level monitor for monitoring the level of fluid in a vessel comprises an inverted U-shaped propagation member which allows the propagation of stress waves therethrough. A first limb of the...
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5027655 |
Method and apparatus for measuring liquid level in the ground
A method of detecting water level in an elongate cavity comprises emitting an alternating signal into the cavity, varying the frequency of said signal to provide a specific response from the...
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5022266 |
Passive acoustics process to monitor fluidized bed flow
A method for the non-intrusive determination of flow anisotropy through the cross-section of a two phase fluid bed reactor.
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5022269 |
Resonance frequency position sensor
A position sensor includes a vibrating elongated member with a marker retained thereto in a sliding relationship thereon, wherein the marker coupled to a displacement of a target corresponding to a...
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5017867 |
Magnetostrictive linear position detector with reflection termination
A magnetostrictive linear displacement detector with increased position resolution includes a magnetostrictive wire anchored at opposite head and foot ends with a reflection termination at the foot...
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5015995 |
Fluid level monitor
A fluid level monitor for monitoring the fluid level in a tank comprises a first pair of transducers arranged in a vertically upper horizontal plane and a second pair of transducers arranged in a...
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5000046 |
Method of measuring a liquid pool volume
A method of measuring a molten metal liquid pool volume and in particular molten titanium liquid pools, including the steps of (a) generating an ultrasonic wave at the surface of the molten metal...
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4991433 |
Phase track system for monitoring fluid material within a container
Acoustical energy is directed into a vessel containing an unknown volume of fluid at a frequency at or near the Helmholtz resonance of the vessel. The signal generated within the vessel is analyzed...
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4984449 |
Ultrasonic liquid level monitoring system
A liquid level measuring system having a tubular ultrasonic probe with a length in excess of the depth of liquid to be measured; for vertical insertion into a tank. A transducer inside the tube, at...
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4972386 |
Filling level meter
The filling level meter for measuring the filling level in a container includes a transmitting and a receiving arrangement which directs sonic or ultrasonic pulses onto the filling material surface...
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4964090 |
Ultrasonic fluid level sensor
An ultrasonic sensor for fluid levels comprises a carrier having spaed-apart legs with registering openings adapted to receive a piezoelectric transmitter and a piezoelectric receiver in the...
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4958518 |
Sensor for determining liquid level in a container
A rod shaped or tubular housing for a sensor includes an interior space provided with upper and lower compensating openings and within which an ultrasound measured distance device. Below the...
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4954997 |
Sensor device using lamb elastic waves for detecting the presence of a liquid at a predetermined level
The sensor device for detecting the presence or absence of a liquid (2) at predetermined level (N) in a tank (1) comprises a transmitter transducer (51; 51'; 61), a receiver transducer (52, 52',...
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4945276 |
Transducer for arranging in a fluid, particularly for the measurement of the flow-velocity of a fluid in a pipe, by transmitting/receiving sonic pulses
A transducer for arranging in a fluid particularly for the measurement of the flow velocity of a fluid in a pipe by transmitting/receiving sonic pulses, is designed as a cupshaped metal body (5),...
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4943773 |
Magnetostrictive linear displacement transducer having preselected zero crossing detector
A liquid level detector of the type in which a magnetostrictive wire extends through the liquid level measurement range and is captured in a tensioned vertical orientation within a stainless steel...
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4934186 |
Automatic echo meter
An apparatus (10) is disclosed for permitting continuous calculations of the depth of the fluid level (12) within a well bore (14) during a test interval. A sonic event is generated in the well...
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4928525 |
Sonic tank inventory control system and method
A system for measuring the level of a fluid in a tank comprises a plurality of reflectors positioned in the tank with the reflectors being a known distance from one another and a first reflector...
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4924700 |
Apparatus for measuring storage parameters such as level and temperature of liquids or fluids of different densities in a tank
The invention relates to apparatus for measuring storage parameters such as level and temperature relating to immiscible liquids or fluids in a tank. The apparatus comprises a pulse generator (1)...
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4922855 |
Milking machine
A milking machine detects a flow rate of milk during milking and integrates by a completion timer the time when the detected flow rate is smaller than a reference flow rate near an end of the...
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4920796 |
Tank level meter
A tank level meter includes an elongated sound conductor of a solid material extending over the entire height of the tank. A sound generator is coupled to one end of the sound conductor to excite...
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4912686 |
Sensor apparatus
A sensor apparatus for detecting sludge in a tank e.g. an oil storage tank, wherein sonar tarnsmission and reception is effected by a transducer (29) whose acoustic center is coincident with the...
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4909449 |
Primary crushing stage control system
A first stage of a rock crushing plant is controlled by controlling the feed rate supplied to a primary rock crusher and by indicating to haul vehicles bringing rock to the plant from a quarry when...
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4909080 |
Ultrasonic level gauge
An ultrasonic level gauge that measures the level of a test surface inside a tank. A guiding pipe guides the ultrasonic wave transmitted by an ultrasonic transceiver to the test surface, and guides...
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4908776 |
Spacecraft fuel measurement
A three-axis accelerometer (4) mounted on board a spacecraft (10) proximate a fuel tank (3) is used to derive an estimate of the amount of fuel (2) remaining within the tank (3). The output of the...
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