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7605748 |
Filling level radar frequency converter
A frequency converter for a filling level radar includes a signal generator unit, a receiver circuit, a transmit coupler, and an amplifier. The amplifier is amplifying the transmit signal at the...
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7602330 |
Horn antenna with a composite emitter for a radar-based level measurement system
A horn antenna suitable for use with a level measurement device and having a composite emitter structure. The emitter structure or assembly comprises an emitter and a plug. The emitter provides the...
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7592946 |
Level measurement arrangement
A level measurement arrangement for measurement of a level of a product in a container, comprising: a level sensor, having: a mounting element, including a process connector, for mounting the...
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7589664 |
Circuit for multifrequency band radar level gauge
A circuit for a radar level gauge for measuring the level of the surface of a product stored in a container, wherein the gauge includes a radar for transmitting microwave signals from a multiband...
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7586450 |
Device for transmitting and/or receiving high-frequency signals in an open or closed space system
A device for transmitting and/or receiving high-frequency signals in an open or closed, spatial system, wherein the device is embodied as an array antenna, which transmits and receives...
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7586435 |
Radar level gauge system using a waveguiding structure with periodically arranged reference impedance transitions
A radar level gauge system, for determining a filling level of a product contained in a tank, said radar level gauge system comprising:
a transceiver for generating, transmitting and...
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7564399 |
Shielded compartment for mounting a high frequency radar component on a printed circuit board
The shielded mounting module comprises a cover member and a box member . The box member includes a plurality of bosses formed in the bottom surface. Each of the bosses provide an electrical contact...
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7561113 |
Antenna system for level measurement with radar level measurement devices
The invention concerns an antenna system for level measurement with a level measurement device with a wave guide ( 5 ) that runs axially and that either has on its rear side an arrangement ( 4 )...
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7551122 |
Radar level gauge system and method providing a signal indicative of process reliability
A method for determination of a filling level of a product contained in a tank, comprising the steps of generating and transmitting an electromagnetic signal; propagating the transmitted...
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7542866 |
Threshold setting for a radar level transmitter
Disclosed is a method and apparatus for setting threshold values for use by a radar level transmitter to detect reflected wave pulses corresponding to portions of a transmitted microwave pulse...
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7541969 |
Radar level gauging system for use at sea
A radar level gauging system for determining a filling level of a liquid in a tank arranged in a mobile unit is disclosed. The system is comprises a processing circuitry for determining a local and...
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7532155 |
Radar level gauging system
A radar level gauging system comprising a microwave unit for transmitting and receiving first microwaves having a first and second distinguishable characteristics, a microwave absorber adapted to...
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7525476 |
System and method for filling level determination
A method for determining a filling level of a product contained in a tank, by means of a radar level gauge system comprising a transceiver for generating, transmitting and receiving electromagnetic...
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7518548 |
Method for determining quality of measurement in a radar level gauge system
A method for determining a quality of measurement in a radar level gauge system arranged to measure a filling level of a content contained in a tank, comprising the steps of providing an antenna...
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7515095 |
Silo contents measurement system
An antenna for a level sensing gauge comprises an environmentally sealed chamber extending from the level sensing gauge and mounting and positionable within the interior of a storage compartment,...
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7508875 |
Correlation matrix estimation via adaptive array perturbational processing to enable jammer location
Prior adaptive antenna systems can reduce effects of a jamming or interfering signal by reducing antenna gain in the direction of such signal. However, direction finding capability to enable...
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7498974 |
Radar level gauge with a galvanically isolated interface
A radar level gauge (RLG) using electromagnetic waves for determining a process variable of a product in a tank is provided which includes timing circuitry adapted to provide timing control of a...
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7486226 |
Device and a method for accurate radar level gauging
The invention relates to a system, device, and method for using radar signals to measure the distance (h) to a surface from said device, the device comprising a transmitter and a transmitting...
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7482971 |
Time-of-flight-ranging system and method for calibrating such a system
An embedded calibration mechanism and method for a time-of-flight ranging system. The calibration mechanism ( 200 ) comprises a channel ( 202 ) having known characteristics. Periodically or as part...
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7482818 |
Systems and methods for detecting the presence and/or absence of a solid liquid or gas
Systems and methods are described for detecting the presence and/or absence of a solid, liquid or gas which utilize an RF energy emitter and RF energy detector for determining whether a solid,...
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7479787 |
Current regulator for loop powered time of flight and level measurement systems
A protection circuit for a current loop powered level measurement or time of flight ranging apparatus. The protection circuit includes one or more Zener diodes, a leakage current detector circuit...
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7477059 |
Method to determine the contents level of a first fluid in a container and to determine a presence of a second fluid below the first fluid and level measurement apparatus to execute said method
A level measurement device to measure the fill level of a fluid in a container, and a method to determine the contents level of a first fluid in a container and a presence of a second fluid below...
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7453393 |
Coupler with waveguide transition for an antenna in a radar-based level measurement system
A mechanism for coupling a coaxial waveguide to another waveguide. The mechanism includes a lower or matching waveguide and an impedance transformer. A coaxial port couples the coaxial waveguide to...
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7450055 |
Coaxial connector in radar level gauge
A guided wave radar level gauge for determining a process variable of a product in a tank, a feed through fitting, a probe extending into the tank, transceiver circuitry mounted on a circuit board,...
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7446695 |
Precision pulse detection system for radar sensors
A precision pulse detection system for time-of-flight sensors detects a zero axis crossing of a pulse after it crosses above and then falls below a threshold. Transmit and receive pulses flow...
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7417586 |
Methods and systems for interferometric cross track phase calibration
A method to compensate for variances in signal path delays for a plurality of radar return processing channels is described. The method comprises providing a signal in the signal path between an...
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7408501 |
Method employing the radar principle for measuring the fill level of a medium in a container
A method for measuring the fill level of a medium in a container by applying the radar principle, whereby a measuring signal is generated and transmitted in the direction of the medium. A...
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7379016 |
Carrier phase detection system for radar sensors
A pulse detection system for expanded time radar, laser and TDR sensors detects specific cycles within bursts of cycles. A sensor transmits and receives short bursts of RF cycles. A transmit pulse...
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7372397 |
Energy storage in a radar level gauge
A radar level gauge using microwaves for measuring a level of a surface of a product in a container, comprising a microwave unit, processing circuitry connected to said microwave unit, an interface...
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7355548 |
Processing of tank signal in radar level gauge system
A method and a system for processing a reflected microwave signal generated by a radar level gauge system arranged to transmit microwaves towards the material in the tank, and receive a reflection...
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7345623 |
Reflection free launcher for electromagnetic guide wire
Guided wave radar (GWR) pulses are launched onto an electromagnetic guide wire using a compact launcher that includes an impedance matching element. The impedance matching element produces...
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7345622 |
Two-mode radar level gauge system
A radar level gauge system for gauging the level of a filling material in a container is disclosed. The system comprises a waveguide extending towards the surface of said filling material; a...
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7342531 |
Redundant level measurement in radar level gauging system
A method and system for determining a product level in a tank which determine a first level measure using emission of electromagnetic waves into the tank, detect a differential pressure, determine...
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RE40128 |
Stabilization in a radar level gauge
A radar gauge adapted to sense fluid level in a tank and including a radar gauge circuit in which radar transmission and level sampling are controlled by a transmit frequency and a sample frequency...
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7319401 |
Radar level gauge system with variable alarm limits
A radar level gauge system for determining the filling level of a filling material in a tank is disclosed. The system comprises a transmitter for transmitting measuring signals towards the surface...
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7307582 |
Method for determining a level of material with a two-wire radar sensor comprising intermittently operating circuitry components and a two-wire radar sensor
A method for determining a distance between a radar sensor and a reflection surface of a material comprising the following steps. The radar sensor is energized via a two-wire control loop which...
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7283086 |
Fill level measuring device working with microwaves
A fill level measuring device working with microwaves is provided, with which, with very small inventory cost, many applications having a wide variety of different measuring conditions can be...
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7265558 |
Radar level gauge using elliptically or circularly polarized waves
A radar level gauge (RLG) is provided for determining a filling level of a filling material contained in a container by transmitting and receiving elliptically or circularly polarized waves. The...
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7259712 |
Antenna with integral sealing member for a radar-based level measurement system
An antenna assembly suitable for use with a microwave-based level measurement system mounted on a vessel. The antenna assembly comprises a rod antenna having a mounting member with an integral...
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7239267 |
Microwave sealing for radar level gauges
A radar level gauge system is disclosed, having a transmitter for transmitting measuring signals towards the surface of the filling material, a receiver for receiving echo signals from said surface...
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7233278 |
Radar level gauge with switch for selecting transmitter or receiver mode
A radar level gauge (RLG), intended for measuring with a close-range low-power radar a distance to a content surface in a container relatively to a measuring position, which is located above the...
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7227495 |
Radar fill-level sensing device
A radar fill-level sensing device has a high-frequency unit that serves to generate and process radar signals of a predefined frequency and wavelength, an antenna for transmitting and/or receiving...
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7209073 |
Method and device for determining the filling level of a medium in a container
The invention relates to a method for determining the filling level of a medium in a container. A mixer that has at least one mixer blade and a mixer frequency (f <1>R</1> ) is disposed...
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7173436 |
Antenna device for level gauging
An antenna device for determining the filling level of a filling material in a container (tank) comprising an essentially flat array antenna with an emitting area for emitting measuring signals...
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7142124 |
Packaging incorporating volume-measurement capability using RFID tags
A method and system is disclosed for enabling quantities of bulk-type products to be determined using RFID tags that can also be used to determine the existence of product or packaging containing...
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7113125 |
Method for measuring material level in a container using RFID tags
A level of liquid of pulverent solids in a container (or volume of a liquid in the absence of gravity) is detected by using radio frequency identification (RFID) tags or similar transponders...
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7106248 |
Through air radar level transmitter
A process control instrument comprises a control for generating or receiving a high frequency signal. A waveguide comprises a cylindrical housing closed at one end by a rear wall. A loop launcher...
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7106247 |
Radar level gauge with antenna arrangement for improved radar level gauging
The present invention relates to a radar level gauge ( 1 ) comprising an antenna ( 2 ), a tank sealing ( 3 ), an electronics unit ( 4 ) and a waveguide feed ( 5 ) between the electronics unit ( 4 )...
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7099662 |
Transceiver unit with interference-reducing antenna
A transceiver unit, particularly for measuring applications, comprising a transmitter ( 1 ) for generating a signal, an acquisition antenna ( 5 ) for emitting the signal in an acquisition volume...
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7098843 |
Automatic sensitivity control for radar level gauges
A radar level gauge system for determining the filling level of a filling material in a tank is disclosed. The system comprises an antenna device for emitting measuring signals towards the surface...
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