公开(公告)号：WO1991004475A1

公开(公告)日：1991-04-04

申请号：PCT/US1990004280

申请日：1990-07-31

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  WALISH, James, E. ,  MATTISON, Lee, Ann ,  PETERSON, Thomas, P.

IPC: G01L07/08

CPC classification number: G01L19/0038 ,  G01L19/0084 ,  G01L19/0645 ,  G01L19/0663 ,  G01L19/143

Abstract: A transmitter (10) that provides an output indicating pressure difference between a line pressure and atmosphere outside the transmitter (10) is made intrinsically safe by coupling the sensor cavity (44) as well as other cavities (12, 13) where ignition can occur to atmosphere only through flame quenching paths. The opening (22) in the transmitter housing (10) in which the sensor (45) is mounted has a plug (41) including the sensor cavity (44) that holds the sensor (45), and a fitting (26) which is couplable to the pressure line. An isolator (35) is used for transmitting the process pressure to the sensor (45) through an isolator diaphragm (35A) acting on an incompressible filling the sensor cavity (44) and transmitting pressure through a passageway (35B) that is shaped to provide a flame quenching path. The passageway (35B) flame isolates the sensor (45) from the process fluid line. The opposite side of the sensor (45) is connected to atmosphere only through paths (50, 51, 52) which are flame quenching because of the passageway shape. The plug (35) is an assembly that can be made easily inserted and removed, and provides intrinsic safety even if there is failure of some of the components such as the isolating diaphragm (35A) or welds holding portions of the plug (35) together.

公开(公告)号：WO1998014764A1

公开(公告)日：1998-04-09

申请号：PCT/US1997016821

申请日：1997-09-23

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  PETERSON, Thomas, P.

IPC: G01L19/00

CPC classification number: G01L19/0645

Abstract: A process control instrument (10) adapted to provide an output indicative of a parameter of a process fluid is disclosed. The process control instrument is designed to be attachable to a flange (13) having a first passageway (24) filled with process fluid. A body (14) of the process control instrument has an opening (28) adjacent to the first passageway (24) adapted to receive process fluid from the first passageway. A seal (48) positioned in the opening (28) and attached to the body (14) at a seal outer diameter is adapted to prevent process fluid from leaking from the first passageway (24) and the opening (28) past the flange (13).

Abstract translation: 公开了一种适于提供指示过程流体参数的输出的过程控制仪器（10）。 过程控制仪器设计成可附接到具有填充有过程流体的第一通道（24）的凸缘（13）。 过程控制仪器的主体（14）具有邻近第一通道（24）的开口（28），适于从第一通道接收过程流体。 定位在开口（28）中并以密封外径附接到主体（14）的密封件（48）适于防止工艺流体从第一通道（24）和开口（28）泄漏通过凸缘（ 13）。

公开(公告)号：WO1992008116A1

公开(公告)日：1992-05-14

申请号：PCT/US1991007925

申请日：1991-10-25

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  PETERSON, Thomas, P.

IPC: G01L07/08

CPC classification number: G01L19/0038 ,  G01L19/04 ,  G01L19/0645

Abstract: A central region (40) of an isolator diaphragm (30) used in a pressure transmitter, has a substantially flat shape at an undeflected position near room temperature and has a depressed shape at a deflected position at a colder temperature. The isolator diaphragm (30) is mounted over a shaped concavity (18) in a transmitter body (12) with a concave shape which corresponds to the depressed diaphragm shape to reduce output error.

公开(公告)号：EP0574409A1

公开(公告)日：1993-12-22

申请号：EP92902530.0

申请日：1991-10-25

Applicant: ROSEMOUNT INC.

Inventor： PETERSON, Thomas, P.

IPC: G01L7 ,  G01L9 ,  G01L19

CPC classification number: G01L19/0038 ,  G01L19/04 ,  G01L19/0645

Abstract: Une région centrale (40) d'un diaphragme (30) d'un isolateur utilisé dans un émetteur de pression possède une forme sensiblement plate au niveau d'une position non défléchie à une temérature proche de la température ambiante et possède une forme affaissée dans une position défléchie à une température plus froide. Le diaphragme (30) de l'isolateur est monté sur une concavité façonnée (18) dans un corps d'émetteur (12) et présente une forme concave qui correspond à la forme affaissée du diaphragme pour réduire les erreurs de sortie.

公开(公告)号：EP0864078A1

公开(公告)日：1998-09-16

申请号：EP97944342.0

申请日：1997-09-23

Applicant: ROSEMOUNT INC.

Inventor： PETERSON, Thomas, P.

IPC: G01L19

CPC classification number: G01L19/0645

Abstract: A process control instrument (10) adapted to provide an output indicative of a parameter of a process fluid is disclosed. The process control instrument is designed to be attachable to a flange (13) having a first passageway (24) filled with process fluid. A body (14) of the process control instrument has an opening (28) adjacent to the first passageway (24) adapted to receive process fluid from the first passageway. A seal (48) positioned in the opening (28) and attached to the body (14) at a seal outer diameter is adapted to prevent process fluid from leaking from the first passageway (24) and the opening (28) past the flange (13).

公开(公告)号：EP0574409B1

公开(公告)日：1996-12-11

申请号：EP92902530.2

申请日：1991-10-25

Applicant: ROSEMOUNT INC.

Inventor： PETERSON, Thomas, P.

IPC: G01L7/08 ,  G01L9/00 ,  G01L19/04

CPC classification number: G01L19/0038 ,  G01L19/04 ,  G01L19/0645

Abstract: A central region (40) of an isolator diaphragm (30) used in a pressure transmitter, has a substantially flat shape at an undeflected position near room temperature and has a depressed shape at a deflected position at a colder temperature. The isolator diaphragm (30) is mounted over a shaped concavity (18) in a transmitter body (12) with a concave shape which corresponds to the depressed diaphragm shape to reduce output error.

公开(公告)号：EP0493397B1

公开(公告)日：1994-12-21

申请号：EP90912186.5

申请日：1990-07-31

Applicant: ROSEMOUNT INC.

Inventor： WALISH, James, E. ,  MATTISON, Lee, Ann ,  PETERSON, Thomas, P.

IPC: G01L7/08 ,  G01L9/06

CPC classification number: G01L19/0038 ,  G01L19/0084 ,  G01L19/0645 ,  G01L19/0663 ,  G01L19/143

Abstract: A transmitter (10) that provides an output indicating pressure difference between a line pressure and atmosphere outside the transmitter (10) is made intrinsically safe by coupling the sensor cavity (44) as well as other cavities (12, 13) where ignition can occur to atmosphere only through flame quenching paths. The opening (22) in the transmitter housing (10) in which the sensor (45) is mounted has a plug (41) including the sensor cavity (44) that holds the sensor (45), and a fitting (26) which is couplable to the pressure line. An isolator (35) is used for transmitting the process pressure to the sensor (45) through an isolator diaphragm (35A) acting on an incompressible filling the sensor cavity (44) and transmitting pressure through a passageway (35B) that is shaped to provide a flame quenching path. The passageway (35B) flame isolates the sensor (45) from the process fluid line. The opposite side of the sensor (45) is connected to atmosphere only through paths (50, 51, 52) which are flame quenching because of the passageway shape. The plug (35) is an assembly that can be made easily inserted and removed, and provides intrinsic safety even if there is failure of some of the components such as the isolating diaphragm (35A) or welds holding portions of the plug (35) together.

公开(公告)号：EP0864078B1

公开(公告)日：2005-03-09

申请号：EP97944342.1

申请日：1997-09-23

Applicant: ROSEMOUNT INC.

Inventor： PETERSON, Thomas, P.

IPC: G01L19/00

CPC classification number: G01L19/0645

Abstract: A process control instrument (10) adapted to provide an output indicative of a parameter of a process fluid is disclosed. The process control instrument is designed to be attachable to a flange (13) having a first passageway (24) filled with process fluid. A body (14) of the process control instrument has an opening (28) adjacent to the first passageway (24) adapted to receive process fluid from the first passageway. A seal (48) positioned in the opening (28) and attached to the body (14) at a seal outer diameter is adapted to prevent process fluid from leaking from the first passageway (24) and the opening (28) past the flange (13).

公开(公告)号：EP0493397B2

公开(公告)日：2004-06-16

申请号：EP90912186.5

申请日：1990-07-31

Applicant: ROSEMOUNT INC.

Inventor： WALISH, James, E. ,  MATTISON, Lee, Ann ,  PETERSON, Thomas, P.

IPC: G01L7/08 ,  G01L9/06

CPC classification number: G01L19/0038 ,  G01L19/0084 ,  G01L19/0645 ,  G01L19/0663 ,  G01L19/143

Abstract: A transmitter (10) that provides an output indicating pressure difference between a line pressure and atmosphere outside the transmitter (10) is made intrinsically safe by coupling the sensor cavity (44) as well as other cavities (12, 13) where ignition can occur to atmosphere only through flame quenching paths. The opening (22) in the transmitter housing (10) in which the sensor (45) is mounted has a plug (41) including the sensor cavity (44) that holds the sensor (45), and a fitting (26) which is couplable to the pressure line. An isolator (35) is used for transmitting the process pressure to the sensor (45) through an isolator diaphragm (35A) acting on an incompressible filling the sensor cavity (44) and transmitting pressure through a passageway (35B) that is shaped to provide a flame quenching path. The passageway (35B) flame isolates the sensor (45) from the process fluid line. The opposite side of the sensor (45) is connected to atmosphere only through paths (50, 51, 52) which are flame quenching because of the passageway shape. The plug (35) is an assembly that can be made easily inserted and removed, and provides intrinsic safety even if there is failure of some of the components such as the isolating diaphragm (35A) or welds holding portions of the plug (35) together.

公开(公告)号：EP0493397A1

公开(公告)日：1992-07-08

申请号：EP90912186.0

申请日：1990-07-31

Applicant: ROSEMOUNT INC.

Inventor： WALISH, James, E. ,  MATTISON, Lee, Ann ,  PETERSON, Thomas, P.

IPC: G01L7 ,  G01L9 ,  G01L19

CPC classification number: G01L19/0038 ,  G01L19/0084 ,  G01L19/0645 ,  G01L19/0663 ,  G01L19/143

Abstract: On ôte tout danger à un transmetteur (10) donnant une donnée de sortie de la différence de pression entre une pression de ligne et l'atmosphère se trouvant à l'extérieur du transmetteur (10) en couplant la cavité du détecteur (44) ainsi que les autres cavités (12, 13) où le feu peut se déclarer vers l'atmosphère, uniquement à des voies de passage étouffant les flammes. L'ouverture (22) située dans le boîtier du transmetteur (10) dans lequel le détecteur (45) est monté, possède une prise (41) incluant la cavité du détecteur (44) qui maintient le détecteur (45) et un assemblage (26) que l'on peut coupler à la ligne de pression. On utilise un sectionneur (35) pour transmettre la pression du processus au détecteur (45) par un diaphragme du sectionneur (35A) s'exerçant sur un remplissage incompressible de la cavité du détecteur (44) et transmettant la pression par un passage (35B) ayant une forme servant à étouffer les flammes lors de leur passage. Le passage (35B) isole des flammes le détecteur (45) de la ligne liquide du processus. Le côté opposé du détecteur (45) n'est relié à l'atmosphère que par des passages (50, 51, 52) qui étouffent les flammes en raison de la forme de ceux-ci. La prise (35) est un assemblage qu'on peut facilement introduire et retirer, et qui offre une grande surêté même s'il se produit une défaillance d'un des composants comme le diaphragme d'isolation (35A) ou le soudage des parties de support de la prise (35).