Micromotion Gmbh

Charles Paul Stack

Andrew Timothy Patten

Gregory Treat Lanham

Craig B McAnally

Mark James Bell

Joel Weinstein

Craig Brainerd Van Cleve

Marc Allan Buttler

Jeffrey S Walker

Craig Brainerd VanCleve

Neal B Gronlie

Craig B Mcanally

David Frederick Normen

Steven M Jones

Graeme Ralph Duffill

Antonio X Luna

Eugene M Shanahan

Andrew K Levien

Dwight C Dutton, Jr

Stephen Seddon

Treat Lanham Gregory

The present invention relates to a system, a method, and a computer program product for detecting a process disturbance from entrained gas or particulates within a fluid flowing in a vibrating flow device (). In one embodiment, the system, the method and the computer program may involve a comparison between a measured drive gain and a drive gain threshold value and a comparison between a void fraction and a void fraction threshold value. In another embodiment, the system, the method and the computer program may involve a comparison between a measured drive gain and a drive gain threshold value, a comparison between a void fraction and a void fraction threshold value, and a comparison between a measured mass flow rate and a nominal mass flow rate threshold value. In yet another embodiment, the system, the method and the computer program may involve a comparison between a measured drive gain and a drive gain threshold value and a comparison between a measured pick-off amplitude and a pick-off amplitude threshold value.

System, method, and computer program product for detecting a process disturbance in a vibrating flow device

A method for calibrating a multiple flow conduit flow meter () is provided according to an embodiment of the invention. The multiple flow conduit flow meter () includes a first flow conduit () conducting a first flow stream and a pair of first pickoff sensors (') affixed to the first flow conduit (). The multiple flow conduit flow meter () further includes at least one additional flow conduit () conducting at least one additional flow stream and at least one pair of additional pickoff sensors (&#x2032;) affixed to the at least one additional flow conduit ().

Method for calibrating a multiple flow conduit flow meter

A multiple flow conduit flow meter () is provided according to an embodiment of the invention. The multiple flow conduit flow meter () includes a first flow conduit () conducting a first flow stream and a pair of first pickoff sensors (') affixed to the first flow conduit (). The multiple flow conduit flow meter () further includes at least one additional flow conduit () conducting at least one additional flow stream and at least one pair of additional pickoff sensors (&#x2032;) affixed to the at least one additional flow conduit (). The at least one additional flow stream is independent of the first flow stream. The multiple flow conduit flow meter () further includes a common driver () configured to vibrate both the first flow conduit () and the at least one additional flow conduit () in order to generate a first vibrational response and at least one additional vibrational response.

Multiple flow conduit flow meter

A vibratory flow meter () for determining a derived fluid temperature Tof a flow material is provided according to the invention. The vibratory flow meter () includes a flow meter assembly () including one or more flow conduits (), a meter temperature sensor () configured to measure a meter temperature T, an ambient temperature sensor () for measuring an ambient temperature T, and meter electronics () coupled to the meter temperature sensor () and to the ambient temperature sensor (). The meter electronics () is configured to receive the meter temperature Tand the ambient temperature Tand determine the derived fluid temperature Tof the flow material in the vibratory flow meter () using the meter temperature Tand the ambient temperature T.

Vibratory flow meter and method for determining a fluid temperature of a flow material

A method and apparatus is disclosed that guides a user through a sequence of steps that will allow the user to complete a predefined task using the flow meter. The steps include: selecting a predefined task, displaying a sequence of steps that directs the user through a process for using the Coriolis flow meter to complete the predefined task, and operating the Coriolis flow meter in response to the sequence of steps to complete the predefined task.

Method and apparatus for directing the use of a coriolis flow meter

Method and apparatus for directing the use of a Coriolis flow meter

A system for calculating a flow rate of a flow meter using multiple modes is provided according to an embodiment of the invention. The system for calculating a flow rate of a flow meter using multiple modes comprises a means for calibrating the flow meter for a number of desired modes. The system for calculating a flow rate of a flow meter using multiple modes includes a means for determining a density of a material flowing through the flow meter associated with each mode. The system for calculating a flow rate of a flow meter using multiple modes further includes a means for determining the flow rate effect on density for each desired mode. The system for calculating a flow rate of a flow meter using multiple modes a means for calculating a flow rate based on the density and flow rate effect on density values for each desired mode.

Diagnostic apparatus and methods for a coriolis flow meter

A meter electronics () for a flow meter () is provided according to an embodiment of the invention. The meter electronics () includes an interface () for receiving a vibrational response and a processing system (). The processing system () receives the vibrational response, vibrates at least one flowtube () of the vibratory flow meter () and generates a first tube period &#x3c4;for a first flow material m, vibrates the at least one flowtube () and generates a second tube period &#x3c4;for a second flow material m, and determines one or more of a stiffness coefficient Cor a mass coefficient Cfrom the first tube period &#x3c4;, a first density &#x3c1;, the second tube period &#x3c4;, and a second density &#x3c1;.

Meter electronics and methods for determining one or more of a stiffness coefficient or a mass coefficient

A single input, multiple output flow meter () is provided. The flow meter () includes an intake conduit () and a flow divider (). The flow meter () further includes a first flow sensor element () coupled to the flow divider (), including a first output conduit (), and is configured to generate a first flow signal. The flow meter () further includes at least a second flow sensor element () coupled to the flow divider (), including a second output conduit (), and is configured to generate a second flow signal. The input flow can be metered through the first output conduit () by the first flow sensor element (), can be metered through the second output conduit () by the second flow sensor element (), or can be simultaneously metered through both the first output conduit () by the first flow sensor element () and through the second output conduit () by the second flow sensor element ().

Single input, multiple output flow meter

A method and apparatus of correcting flow information generated by flow measurement apparatus, such as a Coriolis flowmeter. The disclosed method and apparatus corrects flow information generated during low flow and zero flow rates by blocking the application of spurious flow signals from the output of the flowmeter.

Method and apparatus for correcting output information of flow measurement apparatus

Method and apparatus for providing compensation of mass flow rate and density for the flow tube of a single straight flow tube Coriolis flowmeter. Thermal stress compensation is provided by the use of a plurality of sensors on various portions of the flowmeter. A first sensor is coupled to the flow tube and provides information regarding the flow tube temperature. A plurality of additional sensors are connected to form a network having a two wire output. The additional sensors apply a composite signal over the two wire output of the network to meter electronics. The network signal represents the composite temperature of the flowmeter elements that can cause thermal stress on the flow tube when a temperature differential exists between the flow tube and the temperature of these plurality of elements. The additional elements include the balance bar and the flowmeter case. Sensitivity compensation is provided by the use of a novel algorithm. Density is measured in a single tube flowmeter that is calibrated using two materials of different densities by the use of density equation that has non linear components representing the deviation of the meter calibration from linear.

Straight tube Coriolis flowmeter

A System for validating a flow calibration factor for a Coriolis flow meter. In accordance with the present invention, the period of oscillation of a flow tube is measured as a material of a known density flow through the flow tube. The period of oscillation is used in an equation derived from an equation used to calculate the density of material flowing through the flow tube to find a result. The result is then compared to a result derived from the known density of the material to detect a possible error condition in the flow tube. If an error condition exists an error signal is generated that indicates the Coriolis flow meter should be inspected.

System for validating calibration of a coriolis flowmeter

A single tube Coriolis flowmeter having a balance bar that enhances the flowmeter sensitivity to material flow. The balance bar's design lowers its second bending mode response to have a frequency that may be lower than the flow tube resonant drive frequency. The lowering of the second bending mode frequency of the balance bar enables the Coriolis response of the vibrating flow tube with material flow to extend force from the flow tube through a brace bar to the balance bar. These Coriolis forces induce Coriolis-like response vibrations in the balance bar because of the lowered second bending mode frequency of the balance bar. The Coriolis response of the flowmeter is enhanced since the Coriolis-like response of the balance bar is out of phase with and is additive to the Coriolis deflection of the flow tube.

Sensitivity enhancing balance bar

A single tube Coriolis flowmeter of enhanced flow sensitivity in which material flow induces Coriolis deflections in a flow tube and Coriolis-like deflections in a balance bar vibrationally coupled to the flow tube. Both the Coriolis deflections and the Coriolis-like deflections have a phase shift determined by material flow and are used co-adjuvantly to derive material flow information. The flowmeter achieves a constant flow sensitivity over a range of changes in material density by 1) varying the flow sensitivity in a first direction under control of the ratio between the drive mode vibration amplitude of the flow tube and the balance bar and 2) varying the flow sensitivity in an opposite direction under control of the ratio between the Coriolis deflection amplitude of the flow tube and the Coriolis-like deflection of the balance bar. The drive mode vibration amplitude ratio varies with changes in drive mode frequency caused by changes in material density. The amplitude ratio of the Coriolis defection and the Coriolis-like deflection changes with changes in the magnitude of the separation of the drive mode frequency and the second bending mode frequency to the balance bar density which, in turn, is caused by changes in material density.

Growing community of inventors

Louisville, CO, United States of America

Charles Paul Stack