公开(公告)号：US09274018B2

公开(公告)日：2016-03-01

申请号：US13630998

申请日：2012-09-28

Applicant: Rosemount Inc.

Inventor： Brent Wayne Miller ,  Paul Ryan Fadell

IPC: G01L7/00 ,  G01L19/06 ,  G01L19/00 ,  G01L27/00 ,  G01L13/02

CPC classification number: G01L19/0618 ,  G01L13/026 ,  G01L19/0046 ,  G01L19/0681 ,  G01L27/007

Abstract: A process pressure measuring system includes a transmitter having a first sealed system in which a first outlet couples to a pressure sensor, a first isolator diaphragm assembly, a first capillary passage, and a first isolation fluid. The first isolation fluid couples a first pressure from the first isolator diaphragm to the first outlet and the pressure sensor. A second sealed system includes a second pressure outlet that is coupled to the first isolator diaphragm assembly, a second isolator diaphragm assembly, a second capillary passage and a second isolation fluid. The second isolation fluid is adapted for use in a first temperature range and couples a pressure from the second isolator diaphragm assembly to the second pressure outlet. A third sealed system includes a third pressure outlet that is coupled to the second isolator diaphragm assembly, a third isolator diaphragm assembly, a third capillary passage and a third isolation fluid. The third isolator fluid is adapted for use in a second temperature range and couples a process pressure to the third pressure outlet.

Abstract translation: 过程压力测量系统包括具有第一密封系统的变送器，其中第一出口耦合到压力传感器，第一隔离膜组件，第一毛细管通道和第一隔离流体。 第一隔离流体将来自第一隔离膜的第一压力与第一出口和压力传感器耦合。 第二密封系统包括耦合到第一隔离膜组件的第二压力出口，第二隔离膜组件，第二毛细管通道和第二隔离流体。 第二隔离流体适于在第一温度范围内使用，并且将来自第二隔离膜隔膜组件的压力耦合到第二压力出口。 第三密封系统包括耦合到第二隔离膜组件的第三压力出口，第三隔离膜组件，第三毛细管通道和第三隔离流体。 第三隔离器流体适于在第二温度范围内使用并将过程压力耦合到第三压力出口。

公开(公告)号：US20140090476A1

公开(公告)日：2014-04-03

申请号：US13630998

申请日：2012-09-28

Applicant: Rosemount Inc.

Inventor： Brent Wayne Miller ,  Paul Ryan Fadell

IPC: G01L19/06

CPC classification number: G01L19/0618 ,  G01L13/026 ,  G01L19/0046 ,  G01L19/0681 ,  G01L27/007

Abstract: A process pressure measuring system includes a transmitter having a first sealed system in which a first outlet couples to a pressure sensor, a first isolator diaphragm assembly, a first capillary passage, and a first isolation fluid. The first isolation fluid couples a first pressure from the first isolator diaphragm to the first outlet and the pressure sensor. A second sealed system includes a second pressure outlet that is coupled to the first isolator diaphragm assembly, a second isolator diaphragm assembly, a second capillary passage and a second isolation fluid. The second isolation fluid is adapted for use in a first temperature range and couples a pressure from the second isolator diaphragm assembly to the second pressure outlet. A third sealed system includes a third pressure outlet that is coupled to the second isolator diaphragm assembly, a third isolator diaphragm assembly, a third capillary passage and a third isolation fluid. The third isolator fluid is adapted for use in a second temperature range and couples a process pressure to the third pressure outlet.

Abstract translation: 过程压力测量系统包括具有第一密封系统的变送器，其中第一出口耦合到压力传感器，第一隔离膜组件，第一毛细管通道和第一隔离流体。 第一隔离流体将来自第一隔离膜的第一压力与第一出口和压力传感器耦合。 第二密封系统包括耦合到第一隔离膜组件的第二压力出口，第二隔离膜组件，第二毛细管通道和第二隔离流体。 第二隔离流体适于在第一温度范围内使用，并且将来自第二隔离膜隔膜组件的压力耦合到第二压力出口。 第三密封系统包括耦合到第二隔离膜组件的第三压力出口，第三隔离膜组件，第三毛细管通道和第三隔离流体。 第三隔离器流体适于在第二温度范围内使用并将过程压力耦合到第三压力出口。