Invensys Systems, Inc.

Schneider Electric Systems Usa, Inc.

Stephen B Talutis

John Kevin Quackenbush

Michael Mason Bower

Donald S McKinlay

Javier Lopera

Daniel G Tower, Iii

Paul F Brosnihan

Steven J West

Zhisheng Sun

Jose L Pestana

A method of making a sensor assembly for a vortex flowmeter includes securing a vortex sensor to a vortex sensor housing. The vortex sensor housing is secured to a sensor body that is configured to seal a process penetration opening to limit flow of process fluid out of the flowmeter through the process penetration opening. A pair of pressure-responsive diaphragms is secured to the vortex sensor housing such that the pressure-responsive diaphragms face outwardly from opposite sides of the housing and such that the vortex sensor is positioned to detect motion of at least one of the pressure-responsive diaphragms. A mounting hole is made in the sensor body spaced apart from the vortex sensor housing. A temperature sensor housing is secured to the sensor body through the mounting hole. A temperature sensor is inserted in the temperature sensor housing for sensing a temperature of the process fluid.

Method of making a multivariable vortex flowmeter

A potentiometric sensor includes an elongate non-glass, non-metal housing having opposite first and second longitudinal ends and a length extending between the first and second longitudinal ends. The housing defines a lumen extending along the length of the housing. A measuring half-cell assembly is received in the lumen of the housing and secured to the housing. The measuring half-cell assembly includes a glass body having opposite first and second longitudinal ends and a length extending between the first and second ends of the glass body. The second longitudinal end of the glass body is adjacent the second longitudinal end of the housing and a longitudinal extent of the glass body is less than the length of the housing.

Potentiometric sensor

A sensor assembly for a vortex flowmeter having a flowtube, a bluff body in the flowtube, and a sensor that detects vortices. The sensor assembly extends into contact with the process fluid through a process penetration opening. A sensor body seals the process penetration opening to limit flow of process fluid out of the flowmeter through the process penetration opening. A vortex sensor housing is secured to the sensor body. The vortex sensor housing has a pair of pressure-responsive diaphragms facing outwardly from opposite sides of the vortex sensor housing. A vortex sensor is positioned to detect motion of at least one of the pressure-responsive diaphragms to detect vortices formed in the process fluid. A temperature sensor senses a temperature of the process fluid.

Multivariable vortex flowmeter

An adjustable insertion assembly for an electrochemical sensor includes an electrode holder to receive the sensor, having a distal aperture to permit process fluid to contact the sensor. A receptacle slidably receives the holder, for a sliding range of motion extending from fully inserted to fully retracted positions. An open distal end portion of the receptacle extends through a wall of a process fluid vessel, so that the aperture is open to the process fluid when fully inserted, and closed when fully retracted. A leverage member is releasably movable relative to the receptacle, and moves with a captured extension. An abutment of the receptacle engages the extension so that movement of the leverage member in opposite directions alternately clamps and releases the electrode holder relative to the receptacle to substantially prevent and permit movement at substantially any point within the range of movement.

Adjustable, retractable probe insertion assembly

A non metallic flow through electrodeless conductivity sensor is provided with a conduit having primary and secondary process fluid flowpaths to form a fluid loop. At least one drive and one sense toroid surround the conduit on the fluid loop. Voltage supplied to the drive toroid induces a current in the sense toroid via the fluid loop to eliminate any need for metallic electrodes in contact with the process fluid. At least one additional drive and/or sense toroid is disposed on the fluid loop to enhance induction. Optionally one or more sense coils are disposed about the conduit outside of the fluid loop to cancel out stray electrical noise. An optional conductor disposed along the conduit detects any fluid leakage through changes in resistance thereof.

Non-metallic flow-through electrodeless conductivity sensor and leak detector

A non metallic flow through electrodeless conductivity sensor is provided with a conduit having primary and secondary process fluid flow paths to form a fluid loop. At least one drive and one sense toroid surround the conduit on the fluid loop. Voltage supplied to the drive toroid induces a current in the sense toroid via the fluid loop to eliminate any need for metallic electrodes in contact with the process fluid. At least one additional drive and/or sense toroid is disposed on the fluid loop to enhance induction. Optionally one or more sense coils are disposed about the conduit outside of the fluid loop to cancel out stray electrical noise. An optional conductor disposed along the conduit detects any fluid leakage through changes in resistance thereof. A temperature detector is supported within an electrically non-conductive holder extending into the fluid flow path, so that the detector is free from physical contact with the fluid. An optional enclosure is provided with ports to enable a user to purge any gas permeating the conduit walls.

Non-metallic flow-through electrodeless conductivity sensor with leak and temperature detection

This invention relates to electrical connectors used with non-invasive toroidal conductivity sensors and calibration thereof. A removable breaking calibration connector is provided for temporary insertion in the electrical circuit to selectively break connection to a sense toroid for zero out calibration in situ while retaining connection to the drive toroid and other peripherals, even when process fluid is flowing in the pipes.

Removable breaking calibration connector for toroidal conductivity sensor and method of calibration

A calibration plug provides resistance simulation for calibrating toroidal conductivity sensors. This calibration plug includes a resistive element of predetermined electrical resistance coupled in series between electrical leads which may be engaged with a circuit element to form an electrical circuit. The toroidal sensor includes one or more toroidal coils defining a central bore extending therethrough, a cell factor, and a full scale conductivity value. The predetermined resistance of the resistive element is determined in accordance with the following equation: and the calibration plug further includes indicia identifying one or more toroidal conductivity sensors for which the plug is configured.

Calibration plug for invasive and non-invasive electrodeless conductivity sensors and methods of using the same calibration plug

An interlocked valve sensor insertion assembly for use in a manufacturing process is shown and described. The assembly includes a ball valve configured to alternately couple and decouple a retraction chamber with the process. An insertion assembly is coupled to the retraction chamber, and includes an axially slidable insertion tube with a sensor supported on one end. The tube has a range of motion capable of extending the sensor into the valve. A fastener releasably couples the tube to the insertion assembly, and an actuator is configured for engagement with both the valve and the fastener. The actuator is configured to alternately engage and disengage the fastener when the valve is respectively disposed in open and closed positions.

Sensor ball valve safety interlock

A sensor includes primary and secondary toroids disposed in spaced, coaxial relation to one another with a process flow path extending therethrough. Electrically conductive and non-metallic connectors are located at opposite ends of the flow path to physically contact the process fluid flowing therethrough. The primary toroid is configured to induce an electric current in the process fluid as the process fluid passes through the flow path, wherein the current varies with conductivity of the process fluid. The secondary toroid is configured to detect the electric current in the process fluid as the process fluid passes through the flow path, the current being proportional to the conductivity of the process fluid.

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Milton, MA, United States of America

Stephen B Talutis