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6272922 |
Fluid-gauging systems
A fuel-gauging system has an ultrasonic probe mounted in a tank, the probe being connected to a processor unit via an electrical signal path comprising two lengths of electrical wires and a...
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6271660 |
Permanent multi-pole position magnet
A precision permanent position magnet assembly for use with a magnetostrictive linear displacement transducer having a magnetostrictive waveguide to provide an enhanced return signal is disclosed....
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6263731 |
Method and assembly for monitoring a predetermined level in a container
An assembly for monitoring a predetermined level of a material in a container comprises two ultrasonic transducers mounted on the container in line with the level to be monitored, such that an...
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6247361 |
Method and apparatus for determining the contents of a gas bottle
Disclosed is a method for determining the contents of a gas bottle, in particular a liquid gas bottle, comprising the following steps: First of all, the gas bottle is excited by applying a signal...
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6247362 |
High temperature high pressure probe seal
A high temperature, high pressure process seal is used with a process instrument having a control housing assembly with a 50 ohm control connection, and an elongate probe including a sensing...
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6237410 |
Method for controlling the speed of a pump based on measurement of the fluid depth in a well
A method and apparatus for measuring the depth of fluid in a well and for controlling the speed of a pump which pumps fluid out of the well according to the measured depth is disclosed. The depth...
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6234017 |
Transducer assembly
A transducer assembly adapted for the pulse-emission of a signal includes a transducer (10) with a drive-circuit (20) therefor. The drive circuit (20) includes a charge-storage device (21), a...
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6236322 |
Apparatus for establishing and/or monitoring a predetermined filling level in a container
An apparatus for establishing and/or monitoring a predetermined filling level in a container is described, which apparatus can be used in a wide range of applications, that is to say in many...
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6234023 |
Ultrasonic monitoring technique for containers and apparatus to carry it out
The invention provides an apparatus and method for fill level monitoring in which the height of contents in a container (10) is monitored. The apparatus comprises an ultrasound reciever (30) and...
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6232769 |
Modular waveguide assembly for a position sensor and method for making the same
A modular waveguide assembly for use in a position sensor promotes efficient manufacturing, and can be tested and handled separately from the electronics module of the sensor. The waveguide...
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6227053 |
Dynamic noninvasive detection of analytical container feature using ultrasound
A profile of a rack, that may have zero, one, or a plurality of containers may be obtained using an ultrasonic sensor. The sensor emits a plurality of ultrasonic bursts and the rack is transported...
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6212943 |
Method and apparatus for the sonic measurement of sludge and clarity conditions during the treatment on waste water
A sludge blanket level is determined in a waste water treatment clarifier using sonic pulse reflections. Additionally, using similar techniques, the clarity of the waste water is determined. A...
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6205855 |
Device for monitoring a predetermined level in a container
A device for monitoring a predetermined level in a container contains a sensor formed by a mechanical vibratory system comprising two vibratory rods, of which at least one vibratory rod is tubular...
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6202484 |
Method and device for determining a liquid level with the aid of ultrasonic pulses
A method for determining a liquid level with the aid of ultrasonic pulses improves the measuring accuracy of the liquid level in a container with an echo time measurement of ultrasonic pulses and a...
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6194891 |
Position measurement apparatus using wire waveguide in shock resistant suspension
A magnetostrictive wire waveguide type position measuring system wherein the wire waveguide is mounted within a small diameter brass tube which, in turn, is mounted by way of resilient suspension...
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6192751 |
Non-invasive low frequency elastic wave fluid level sensing system for sludge laden environments
A non-invasive elastic wave fluid level sensing system for use in sludge laden environments, including transmitting and receiving transducers mounted on an outer face of a wall of a container for a...
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6178817 |
Material level sensing
A system for point-level detection of material within a vessel includes a transmission line probe adapted to be mounted to a wall of the vessel so as to extend within the vessel for contact with...
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6176132 |
Method for determining liquid level in a container using an electromagnetic acoustic transducer (EMAT)
An ultrasonic method for determining liquid level in a container employs an electromagnetic acoustic transducer (EMAT) to launch and receive longitudinal ultrasonic waves into a thin metal wall or...
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6169706 |
Echo detection in pulse-echo ranging systems
A method for processing an echo amplitude profile generated by an echo ranging system with reference to a temporal axis to identify return echoes comprised by the profile by identifying amplitude...
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6155112 |
Filling level measuring device operating with microwaves
A filling level measuring device operating with microwaves and to be fastened on a container (3) is provided, the device having a housing (11) and a rod-shaped antenna (7) pointing into the...
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6148665 |
Arrangement for establishing and/or monitoring a predetermined filling level in a container
An arrangement for establishing and/or monitoring a predetermined filling level is described, in which a fixed phase difference (Δφ R ), which is independent of the oscillation quality of the...
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6142015 |
Method and assembly for overfill detection in liquid level sensing in a vessel by the pulse transit time technique
Sensing the level of a liquid in a vessel by the pulse transit time technique is done by means of an ultrasonic transducer mounted above the highest-permissible level in the vessel which emits...
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6138507 |
Apparatus for establishing and/or monitoring a predetermined filling level in a container through controlled transducer phase and impedance
An apparatus for establishing and/or monitoring a predetermined filling level in a container is described, in which a fixed phase difference (Δφ R ), which is independent of the oscillation...
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6105425 |
Vibration type level detector
A base of a detection pipe is fixed. A vibration piece has its one end fixed to a closing portion and the other end provided with a permanent magnet. An electromagnet is closely attached inside the...
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6105424 |
Settling process analysis device and method
A system and method for monitoring the dynamics of particle motion in a liquid-solid media including the rate of settling of particles, the identification of unsettled particle clouds, and the...
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6100601 |
Measurement of toner level employing sensor on paddle
The level of powdered toner in a toner reservoir of a printer or copier is determined by ascertaining the time that it takes a stirring paddle to rotate from a second of two fixed ridges adjacent...
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6085589 |
Material level sensing system calibration
A system for measuring level of material in a vessel that includes a transmission line probe adapted to be positioned for contact with material in the vessel. Electronics are coupled to the...
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6079266 |
Fluid-level measurement by dynamic excitation of a pressure- and fluid-load-sensitive diaphragm
Magnetic force from a momentarily excited coil (34) results in oscillatory flexure of a flexible diaphragm (30) loaded on one side by a liquid (10) whose level is to be measured. A strain gauge...
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6073492 |
Ultrasonic sensor for very high temperatures and pressures
An ultrasonic sensor includes an ultrasonic transmitter, an ultrasonic receiver and a support structure. First and second elongated tubes are mechanically coupled to and extend from the support...
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6058775 |
Integrated liquid level and auxiliary sensor system and method
A magnetostrictive liquid level probe in a double-walled liquid container develops liquid level data and external sensors in the space between the walls respond to the presence of liquid leaked...
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6053041 |
Noninvasive method for determining the liquid level and density inside of a container
Noninvasive method for determining the liquid level and density inside of a container having arbitrary dimension and shape. By generating a flexural acoustic wave in the container shell and...
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6053042 |
Frequency-analysis-type water level measuring method and device therefor
A method and device of measuring a water level of a frequency analysis type is disclosed. The device is consisted of a pipe type of which immersed length is in a proportion to the water level and...
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6055485 |
Apparatus and method for estimating remaining fuel quantity in GEO (Geostationary Earth Orbit) communication satellite propulsion system
The invention provides a software tool in a PC environment, which can be used for planing and analyzing a mission of communication satellite. Input data required for predicting and estimating the...
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6046960 |
Apparatus and method for discriminating true and false ultrasonic echoes
Apparatus for discriminating true echoes from false echoes in an ultrasonic liquid gauging system, comprising: means for producing electrical representations of an echo sequence received after an...
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6006604 |
Probe placement using genetic algorithm analysis
A method for determining an optimized solution of positions for N liquid surface sensors used to gauge quantity of liquid in the container, comprising the steps of: a) defining geometric limits of...
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5996407 |
Multi-frequency ultrasonic liquid level gauging system
A multi-frequency ultrasonic liquid level gauging system includes a storage apparatus for storing a volume of liquid and a plurality of ultrasonic transducers. Each transducer introduces a distinct...
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5998991 |
Pickupless magnetostrictive position measurement apparatus
A method and apparatus for determining the position of a movable object along a magnetostrictive wire having first and second opposed ends. A first electrical excitation pulse is applied to a...
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5987994 |
Ultrasonic method for material monitoring
An ultrasonic measurement method in an ultrasonic measurement system having an ultrasonic transducer includes emitting an ultrasonic pulse from the ultrasonic transducer. An ultrasonic pulse is...
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5986449 |
Self-contained liquid level detection apparatus with substantially constant cross-section outer tube
A liquid level detection apparatus includes an outer tube of substantially constant diameter. A magnetostrictive wire is supported within the outer tube. An electrical circuit is mounted within the...
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5979233 |
Liquid measuring system and methods
Ultrasonic apparatus determines the fluid depth, volume, and temperature in a storage tank. A system description for monitoring an underground storage tank containing gasoline is described. The...
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5975102 |
Process and apparatus for detecting the limit level of liquids and bulk materials
In a process for the detection of the limit level of liquids and bulk materials in containers and pipelines, the change in the oscillation behavior of a sensor which is excited to oscillation is...
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5953287 |
Sludge topography measurement in oil tanks
A method of and apparatus for determining the topography and/or volume of a layer of sludge on the bottom of an oil tank, for example, in which a sonar head having a velocimeter is immersed in the...
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5948979 |
Radar-based method of measuring the level of a material in a container
For measuring the level of a material in a container on the basis of the radar principle, microwaves are radiated downwards and reflected microwaves received by means of the antenna of a ranging...
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5943908 |
Probe for sensing fluid level
An apparatus (50, 100, 150) for sensing a surface level (20) of fluid (12) includes a generally cylindrical central conductor (16, 102, 152) for connection to a pulse signal source (26) with a...
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5900546 |
Liquid level indicator for storage tank
A railroad tank car containing liquid, has a tube through its top, with the closed lower end of the tube in the liquid. A float slidable along the tube exterior is magnetically coupled to an...
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5895848 |
Apparatus and method for level sensing in a container
A liquid level sensing apparatus, and related method, that utilizes a tuning fork assembly to detect the presence of not only a liquid or air at a particular location within a container, but also a...
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5880364 |
Non-contact ultrasonic micromeasurement system
A non-contact ultrasonic system for measuring the volume of liquid in a container in which an ultrasonic sensor is disposed opposite the top of the container. A circuit provides pulses of...
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5877663 |
Microwave waveguide for tank level sensors
A process sealed waveguide is formed in a flange mounted on a tank, and is used for transmitting microwave energy from a source of microwave energy to an aperture of an antenna on the interior of...
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5877997 |
Pulse echo distance measurement
The invention concerns pulse echo distance measurement and in particular a method and apparatus for calculating such a distance by sensing multiple reflections of a given pulse signal. By sensing...
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5866815 |
Fill-level indicator
Proposed is a fill-level indicator designed to indicate the level of the contents of a container or the storage level of a material at a storage place, the indicator having an ultrasonic transducer...
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