Micromotion Gmbh

Etegent Technologies, Ltd.

Christopher George Larsen

Matthew Joseph Rensing

Timothy J Cunningham

Stuart James Shelley

Richard Allan Roth, Ii

Oleg Lobkis

David J Kapolnek

Roger Scott Loving

Mackenzie Shelley

Richard A Roth

Conor Coyan

Amy Mai Nilsen

Logan Alexander Niehaus

Jason Feldman

Aaron Collins Hacker

Ann El Demery

Adam Jacob Hehr

A vibratory flowmeter () for meter verification is provided, including meter electronics () coupled to the first and second pickoff sensors (L,R) and coupled to a driver (), with the meter electronics () configured to: vibrate the flowmeter assembly () in a single mode using the driver (), determine a single mode current () of the driver () and determine first and second response voltages () generated by the first and second pickoff sensors (L,R), respectively, compute frequency response functions for the determined first and second response voltages () from the determined single mode current (), fit the generated frequency response functions to a pole-residue model, and verify proper operation of the vibratory flowmeter () using the meter stiffness value (), residual flexibility (), and the meter mass () in embodiments.

Vibratory flowmeter and methods and diagnostics for meter verification

An environmental condition may be measured with a sensor () including a wire () having an ultrasonic signal transmission characteristic that varies in response to the environmental condition by sensing ultrasonic energy propagated through the wire using multiple types of propagation, and separating an effect of temperature on the wire from an effect of strain on the wire using the sensed ultrasonic energy propagated through the wire using the multiple types of propagation. A positive feedback loop may be used to excite the wire such that strain in the wire is based upon a sensed resonant frequency, while a square wave with a controlled duty cycle may be used to excite the wire at multiple excitation frequencies. A phase matched cone () may be used to couple ultrasonic energy between a waveguide wire () and a transducer ().

Active waveguide excitation and compensation

A vibratory meter () configured to predict and reduce noise in the vibratory meter (). The vibratory meter () includes a sensor assembly () and a meter electronics () in communication with the sensor assembly (). The meter electronics () is configured to provide a drive signal to a sensor assembly (), receive a sensor signal from the sensor assembly () having one or more components, and generate a signal to be applied to one of the sensor signal and the drive signal to compensate for the one or more components.

Predicting and reducing noise in a vibratory meter

A vibratory flowmeter () for meter verification is provided, including meter electronics () configured to vibrate the flowmeter assembly () in a primary vibration mode using the first and second drivers (L,R), determine first and second primary mode currents () of the first and second drivers (L,R) for the primary vibration mode and determining first and second primary mode response voltages () generated by the first and second pickoff sensors (L,R) for the primary vibration mode, generate a meter stiffness value () using the first and second primary mode currents () and the first and second primary mode response voltages (), and verify proper operation of the vibratory flowmeter () using the meter stiffness value ().

Vibratory flowmeter and method for meter verification

A broadband waveguide comprising at least one filament configured to transmit a signal therethrough. The broadband waveguide may include one or more reflection suppression techniques including a damping material coupled to at least a portion of the at least one filament and/or at least one reflection point configured thereon. The waveguide may further including a cladding material coupled to the at least one filament. The at least one filament may be coupled to a securing element configured to couple to a surface. The at least one filament may be coupled to a sensor configured to sense the transmitted signal.

Broadband waveguide

A method and apparatus for a flowmeter () is provided. The method comprises the steps of placing a material in a flow tube (') while exciting a vibration mode of the flow tube (&#x2032;). Exciting the vibration mode of the flow tube (&#x2032;) comprises the steps of periodically driving a first driver (L) with a first signal and periodically driving a second driver (R) with a second signal, wherein the second driver (R) is driven essentially in phase with the first driver (L), but wherein the first driver's (L) drive amplitude modulated signal reaches a maximum amplitude when the second driver's (R) drive modulated signal reaches a minimal amplitude, and the first driver's (L) drive amplitude modulated signal reaches a minimum amplitude when the second driver's (R) drive amplitude modulated signal reaches a maximum amplitude. The method also comprises the steps of measuring the relative phase between a first pickoff (L) and a second pickoff (R) and determining a relative phase of a right eigenvector for the flow tube (&#x2032;).

Method of determining the left eigenvectors in a flowing Coriolis flowmeter

A meter verification method for a vibratory flowmeter () is provided, comprising vibrating a sensor assembly () of the vibratory flowmeter () with a plurality of test tones in a vibration mode using a driver (), wherein the plurality of test tones is applied substantially instantly, in the absence of a ramp function. A driver () current is determined, and response voltage of pickoff sensors (L,R) are determined for the vibration mode. The instantaneous frequency of the pickoff sensor (L,R) signals is measured, and a filter is applied to isolate the response at each of the plurality of test tones. The filter is also applied to the instantaneous frequency measurements. The same delay is applied to the frequency measurements and the response at each of the test tones. A meter stiffness value () is generated using the current () and the response voltage (), and proper operation of the vibratory flowmeter () is verified using the meter stiffness value ().

Vibratory flowmeter test tones without ramp time

A composite active waveguide temperature sensor () incorporates a first, sensor portion () formed of an environment-resistant material such as ceramic coupled through an ultrasonically-transparent bond () to a second, waveguide portion () formed of an ultrasonically-transmissive material such as a metallic filament wire. By doing so, the sensor portion () may be positioned within a harsh environment and subjected to a temperature to be measured, and the waveguide portion () may be used to propagate ultrasonic energy to and/or from the sensor portion () to a location distal from the harsh environment for measurement of the temperature. The ultrasonically-transparent bond () between these portions () limits attenuation of and the introduction of reflections and other noise to an ultrasonic signal propagated across the bond ().

Composite active waveguide temperature sensor for harsh environments

A combined driver and pick-off sensor component () for a vibrating meter is provided. The combined driver and pick-off sensor component () includes a magnet portion (B) with at least a first magnet (). The combined driver and pick-off sensor component () further includes a coil portion (A,A) receiving at least a portion of the first magnet (). The coil portion (A,A) includes a coil bobbin (), a driver wire () wound around the coil bobbin (), and a pick-off wire () wound around the coil bobbin ().

Collocated sensor for a vibrating fluid meter

Systems and methods for measuring environmental conditions of a sensing location, where a sensor including a measuring surface and a wire coupled in tension to the measuring surface over which ultrasonic signals may be transmitted and sensed. Signal analysis of ultrasonic signals transmitted over the tensioned wire are analyzed to measure one or more environmental conditions acting on the measuring surface.

Environmental sensor with tensioned wire exhibiting varying transmission characteristics in response to environmental conditions

A broadband waveguide incorporates various reflection suppression techniques to reduce reflections in signals communicated thereby. The waveguide includes one or more filaments that each include a first and second end. A first matrix may be configured proximate the first end(s) while a second matrix may be configured proximate an intermediate location between the first and second ends. A damping material may cover a portion of the filament(s) that extends from the second matrix to the second end(s) (including the second end(s) themselves) and/or the second end(s) of the filament(s) is/are shaped to at least partially suppress reflections of the signal therefrom. When configured with multiple filaments, at least two of the filaments may have differing lengths that extend from the second matrix and also operate to at least partially suppress reflections of a signal.

Growing community of inventors

Cincinnati, OH, United States of America

Christopher George Larsen