公开(公告)号：CA2873030C

公开(公告)日：2016-11-22

申请号：CA2873030

申请日：2013-04-18

Applicant: ROSEMOUNT INC

Inventor： SITTLER FRED C

IPC: G01F25/00 ,  G01F1/38

Abstract: A system (100) for measuring flow of process fluid through process piping (102), includes a flow restriction (108) in the process piping generating a differential pressure between an upstream side of the restriction (108) and a downstream side of the restriction (108). The differential pressure is related to flow of the process fluid. First and second upstream pressure transmitters (104C, 104D) are coupled to the process piping (102) on the upstream side of the flow restriction (108) and measure respective first and second upstream pressures. First and second downstream pressure transmitters (104A, 104B) are coupled to the process piping (102) on the downstream side of the flow restriction (108) and measure respective first and second downstream pressure of the process fluid. Flow rate of the process fluid is calculated based upon at least one upstream pressure and one downstream pressure.

公开(公告)号：BRPI1011143A2

公开(公告)日：2016-03-15

申请号：BRPI1011143

申请日：2010-06-03

Applicant: ROSEMOUNT INC

Inventor： KLOSINSKI ANDREW J ,  BRODEN DAVID A ,  SITTLER FRED C

IPC: G01L9/00 ,  G01L13/02

公开(公告)号：CA2873030A1

公开(公告)日：2013-12-05

申请号：CA2873030

申请日：2013-04-18

Applicant: ROSEMOUNT INC

Inventor： SITTLER FRED C

IPC: G01F25/00 ,  G01F1/38

Abstract: A system (100) for measuring flow of process fluid through process piping (102), includes a flow restriction (108) in the process piping generating a differential pressure between an upstream side of the restriction (108) and a downstream side of the restriction (108). The differential pressure is related to flow of the process fluid. First and second upstream pressure transmitters (104C, 104D) are coupled to the process piping (102) on the upstream side of the flow restriction (108) and measure respective first and second upstream pressures. First and second downstream pressure transmitters (104A, 104B) are coupled to the process piping (102) on the downstream side of the flow restriction (108) and measure respective first and second downstream pressure of the process fluid. Flow rate of the process fluid is calculated based upon at least one upstream pressure and one downstream pressure.

公开(公告)号：CA2804458A1

公开(公告)日：2012-01-19

申请号：CA2804458

申请日：2011-06-01

Applicant: ROSEMOUNT INC

Inventor： BRODEN DAVID A ,  HEDTKE ROBERT C ,  KLOSINSKI ANDREW J ,  SITTLER FRED C

IPC: G01L13/00 ,  G01L15/00 ,  G01L27/00

Abstract: A process variable transmitter (36) for measuring a pressure of a process fluid includes a process coupling having a first port (90) configured to couple to a first process pressure and a second port (90) configured to couple to a second process pressure. A differential pressure sensor (56) is coupled to the first and second ports and provides an output related to a differential pressure between the first pressure and the second pressure. First and second pressure sensors (97, 98) couple to the respective first and second ports and provide outputs related to the first and second pressures. Transmitter circuitry (72) is configured to provide a transmitter output based upon the output from the differential pressure sensor and/or the first and/or second pressure sensors.

公开(公告)号：AU2003221980A1

公开(公告)日：2003-11-11

申请号：AU2003221980

申请日：2003-04-17

Applicant: ROSEMOUNT INC

Inventor： SITTLER FRED C ,  NORD CHRISTINA A ,  ROMO MARK G

IPC: G01L19/14 ,  G01L1/00 ,  G01L9/00 ,  G01L19/06

Abstract: A pressure sensor assembly includes an elongate pressure sensor mounted to a sensor mounting block. A protective element covers the elongate pressure sensor to prevent the pressure sensor from contacting process fluid.

公开(公告)号：AU3496101A

公开(公告)日：2001-08-20

申请号：AU3496101

申请日：2001-02-09

Applicant: ROSEMOUNT INC

Inventor： SITTLER FRED C ,  WILLCOX CHARLES R ,  RUD STANLEY E JR

IPC: G01L13/06 ,  G01L9/00 ,  G01L11/02 ,  G01L13/02 ,  G01M11/02

公开(公告)号：DE19882225T1

公开(公告)日：2000-03-16

申请号：DE19882225

申请日：1998-03-06

Applicant: ROSEMOUNT INC

Inventor： SITTLER FRED C

IPC: G01L19/04 ,  G01L9/00

Abstract: A process control transmitter includes a transmitter housing and transmitter circuitry adapted for providing a transmitter output related to a sensed pressure. A sensor coupling in the housing defines a pressure sensor cavity which is filled with isolation fluid. An isolation diaphragm separates the sensor cavity from a process fluid and is adapted to transmit pressure therebetween. The pressure sensor is mounted in the sensor cavity and provides an output related to pressure to the transmitter circuitry. A thermal compensation member is coupled to the sensor cavity and has a thermal expansion coefficient which is different than a thermal expansion coefficient for the sensor coupling. The compensation member is adapted to compensate for pressure changes due to thermal expansion of the components or isolation fluid.

公开(公告)号：AT67592T

公开(公告)日：1991-10-15

申请号：AT87901835

申请日：1987-02-06

Applicant: ROSEMOUNT INC

Inventor： SITTLER FRED C ,  TOY ADRIAN C

IPC: G01K7/18 ,  H01C1/028 ,  H01C1/032 ,  H01C7/02 ,  H01C17/00

Abstract: A thin film platinum resistance thermometer capable of operation at elevated temperatures includes a benign dielectric layer covering the thin film platinum resistance temperature sensing element and a barrier layer overlying the dielectric layer. The barrier layer, which is preferrably titanium dioxide, resists diffusion of contaminants which would alter the electrical characteristics of the sensing element, while permitting diffusion of oxygen through the barrier layer.

公开(公告)号：CA1272517A

公开(公告)日：1990-08-07

申请号：CA538751

申请日：1987-06-03

Applicant: ROSEMOUNT INC

Inventor： SITTLER FRED C ,  BOHARA ROBERT C

IPC: F25D21/02 ,  G01F1/684 ,  G01F1/699 ,  G01K7/22 ,  G01N25/04

Abstract: An integrated sensing device includes a resistance temperature sensor formed in a semiconductor substrate and a resistance heater which is formed on an insulating layer which covers the surface of the semiconductor substrate. The resistance heater has a low temperature coefficient of resistivity and is positioned adjacent the resistance temperature sensor so the current flow through the resistance heater will generate heat which is transferred through the insulating layer to the resistance temperature sensor. The sensing device is applicable to a variety of sensing systems, such as mass flow measurement systems, dew point detection systems, and frost detection systems.

公开(公告)号：MX393679B

公开(公告)日：2025-03-24

申请号：MX2017017121

申请日：2017-12-20

Applicant: ROSEMOUNT INC

Inventor： SITTLER FRED C ,  PRICE JOSHUA M ,  SCHUMACHER MARK S ,  FADELL PAUL R

IPC: C12M1/00 ,  C12M1/12 ,  C12M1/34

Abstract: La presente invención se refiere a un sistema polimérico de sello remoto para acoplar un recipiente de un solo uso a un instrumento de medición de presión, del sistema comprende: un acoplamiento lateral del proceso configurado para acoplarse al recipiente de un solo uso, el acoplamiento lateral del proceso se forma de un polímero esterilizable por radiación y tiene una diafragma desviable lateral del proceso que está configurado para desviarse en respuesta a presión del recipiente de un solo uso; un acoplamiento lateral del instrumento configurado para acoplarse al instrumento de medición de presión, el acoplamiento lateral del instrumento se forma de un polímero esterilizable por radiación y está configurado para transmitir de manera fluida presión de fluido a u n diafragma de aislamiento del instrumento de mediación de presión; tubería que acopla de manera fluida el acoplamiento lateral del proceso al acoplamiento lateral del instrumento; y en donde el acoplamiento lateral del proceso tiene al menos una porción escalonada configurada para retener tubería acoplada al recipiente de un solo uso.