公开(公告)号：GB2338071A

公开(公告)日：1999-12-08

申请号：GB9921575

申请日：1998-03-24

Applicant: ROSEMOUNT INC

Inventor： KLEVEN LOWELL A

IPC: G01F1/32

Abstract: A vortex flowmeter (10) senses a pressure of vortices in a flowing fluid and transmits an output related to mass flow. The vortex flowmeter includes a dynamic filter (68) filtering the vortex pressure signal. The dynamic filter (68) provides a first filtered output signal (82) and a second filtered output signal (86). The dynamic filter (68) includes a controllable transfer function. Control circuitry (70) controls the controllable transfer function and provides an output related to mass flow as a function of the first filtered output signal (82) and the second filtered output signal (86). Transmitter circuitry (85) receives the output signal and transmits a signal related to mass flow.

公开(公告)号：GB2337331A

公开(公告)日：1999-11-17

申请号：GB9921315

申请日：1998-03-26

Applicant: ROSEMOUNT INC

Inventor： KLEVEN LOWELL A ,  HEDTKE ROBERT C ,  WIKLUND DAVID E

IPC: G01F1/32 ,  G01F15/02

Abstract: A vortex sensor (11) senses generated vortices and provides a vortex signal. A filtering circuit (68) is coupled to the vortex sensor (11) to receive the vortex signal and provide an output indicative of fluid flow. A temperature sensor (82) senses a temperature of the fluid and provides a temperature value, while a pressure sensor (86) senses a pressure of the fluid and provides a pressure value. A processor (70, 70A) is operably coupled to the filtering circuit (68), the temperature sensor (82), and the pressure sensor (86) for receiving the output, the temperature value, and the pressure value, respectively. The processor (70, 70A) calculates a calibration factor as a function of the output, the temperature value, and the pressure value for use in calculating the output value indicative of the flow rate of the fluid.

公开(公告)号：AU616499B2

公开(公告)日：1991-10-31

申请号：AU3255289

申请日：1989-04-07

Applicant: ROSEMOUNT INC

Inventor： CORPRON GARY P ,  KLEVEN LOWELL A

IPC: G01F1/32 ,  G01F1/38

Abstract: A vortex sensor used in a vortex flowmeter that has a single sensing diaphragm parallel to the direction of flow that is sensitive to differential pressures caused by vortices shed by a vortex shedding bar associated with the sensing diaphragm. A beam is attached to the sensing diaphragm and it transfers the deflecting motion of the sensing diaphragm due to differential pressures to a sensor external to the flow passageway. The sensor provides an output indicating motions of the beam caused by the beam pivoting when the sensing diaphragm deflects. The beam preferably is pivoted on a relatively rigid, fluid-tight isolator diaphragm with one end of the beam on the outside of the isolator diaphragm. The sensing diaphragm which is used to measure differential pressure rejects variations in the static pressure, that is, increases and decreases of the static pressure on both sides of the diaphragm, which is a common source of problems with existing vortex flowmeter sensors.

公开(公告)号：BR8807546A

公开(公告)日：1990-05-22

申请号：BR8807546

申请日：1988-06-02

Applicant: ROSEMOUNT INC

Inventor： KLEVEN LOWELL A

IPC: G01W1/00 ,  B64D15/20 ,  G08B19/02

公开(公告)号：CA2857662C

公开(公告)日：2018-02-27

申请号：CA2857662

申请日：2012-10-30

Applicant: ROSEMOUNT INC

Inventor： KLEVEN LOWELL A

IPC: G01K1/08

Abstract: A sensor tube (12, 120) for protecting a sensor (13) inserted into a moving process fluid is provided. The sensor tube (12, 120) includes a process interface section (16) for mounting to a process vessel and an extended section extending from the process interface section (16) to a sealed end (22, 404). The extended section includes a twisted section (20) having a longitudinal axis. The process interface section (16) and the extended section define a sensor bore (36) configured to receive a sensor (13) therein. The twisted section (20) has a cross section that includes at least three equally sized walls and wherein the walls form helixes along the longitudinal axis of the twisted section.

公开(公告)号：MX343556B

公开(公告)日：2016-11-10

申请号：MX2014006372

申请日：2012-10-30

Applicant: ROSEMOUNT INC

Inventor： KLEVEN LOWELL A

IPC: G01K13/02 ,  G01K1/08

Abstract: Un tubo sensor (12, 120) para la protección de un sensor (13) insertado en un fluido de proceso en movimiento que se proporciona. El tubo sensor (12, 120) incluye una sección de interfaz de proceso (16) para montar a un recipiente de proceso y una sección extendida que se extiende desde la sección de interfaz de proceso (16) a un extremo sellado (22, 404). La sección extendida incluye una sección trenzada (20) que tiene un eje longitudinal. La sección de interfaz de proceso (16) y la sección extendida definen una perforación de sensor (36) configurada para recibir un sensor (13) en la misma. La sección trenzada (20) tiene una sección transversal que incluye al menos tres paredes del mismo tamaño y en donde las paredes forman hélices a lo largo del eje longitudinal de la sección trenzada.

公开(公告)号：AU2012346409A1

公开(公告)日：2014-07-03

申请号：AU2012346409

申请日：2012-10-30

Applicant: ROSEMOUNT INC

Inventor： KLEVEN LOWELL A

IPC: G01K13/02 ,  G01K1/08

Abstract: A sensor tube (12, 120) for protecting a sensor (13) inserted into a moving process fluid is provided. The sensor tube (12, 120) includes a process interface section (16) for mounting to a process vessel and an extended section extending from the process interface section (16) to a sealed end (22, 404). The extended section includes a twisted section (20) having a longitudinal axis. The process interface section (16) and the extended section define a sensor bore (36) configured to receive a sensor (13) therein. The twisted section (20) has a cross section that includes at least three equally sized walls and wherein the walls form helixes along the longitudinal axis of the twisted section.

公开(公告)号：CA2826825A1

公开(公告)日：2012-08-23

申请号：CA2826825

申请日：2012-02-07

Applicant: ROSEMOUNT INC

Inventor： KLEVEN LOWELL A

IPC: F16T1/48 ,  G01N29/14

Abstract: A transducer assembly (50) includes an acoustic sensor element (1) and an acoustic waveguide (4). The acoustic waveguide (4) includes a rotatable acoustic coupler, a tube (4B), and a foot (4C). The foot (4C) has a mounting surface (11) that is mountable on a fluid conduit. A circuit assembly (3) couples to acoustic sensor element (1) and provides a diagnostic output.

公开(公告)号：DE69638366D1

公开(公告)日：2011-06-16

申请号：DE69638366

申请日：1996-09-26

Applicant: ROSEMOUNT INC

Inventor： KLEVEN LOWELL A ,  LESMEISTER BRAD L

IPC: G01F1/58 ,  B32B15/02 ,  F16L58/04 ,  G01F1/64

公开(公告)号：GB2337331B

公开(公告)日：2001-08-15

申请号：GB9921315

申请日：1998-03-26

Applicant: ROSEMOUNT INC

Inventor： KLEVEN LOWELL A ,  HEDTKE ROBERT C ,  WIKLUND DAVID E

IPC: G01F1/32 ,  G01F15/02

Abstract: A method and apparatus measures a fluid flow using generated vortices. A flow rate is calculated from at least the frequency of the vortices. Warnings are generated for other characteristics of the vortices and fluid measure.