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Improved bi-planar process fluid pressure measurement system

A technology for measuring systems and process fluids, used in elastic deformation gauge-type fluid pressure measurement, pressure difference measurement between multiple valves, measurement of fluid pressure, etc.

Active Publication Date: 2010-08-11
ROSEMOUNT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Dual flat pressure flanges are welded to each connecting ring

Method used

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  • Improved bi-planar process fluid pressure measurement system
  • Improved bi-planar process fluid pressure measurement system
  • Improved bi-planar process fluid pressure measurement system

Examples

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Embodiment Construction

[0014] 1A and 1B show front and side views of an exemplary prior art pressure transmitter 100 . The pressure transmitter 100 includes: an electronics housing 101 enclosing the electronic circuitry; and a module housing 102 housing the isolation diaphragm, pressure sensor and associated sensor circuitry. Module housing 102 is bolted to pressure flange 104 by screws 105 . Additionally, the flange adapter connector 118 is bolted to the pressure flange with bolts 107 . The flange adapter connector 118 has a threaded inlet 109 connectable to threaded process piping (not shown). Pressure flange 104 provides transmitter 100 with one or more process fluid pressure transmitters for pressure measurement. Pressure transmitter 100 is connected to process loop 103, which powers pressure transmitter 100 and may provide bi-directional communication for use in a process control system.

[0015] figure 2 A cross-sectional view of the module housing 102 is shown. Pressure sensor 140 is loc...

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Abstract

A pressure measurement system includes a co-planar pressure sensor module (200) coupled to a bi-planar pressure flange (202; 502). The co- planar pressure sensor module (200) has a pair of isolator diaphragms that are substantially co-planar with one another. A plurality of connection rings (204; 206; 504; 506) are welded proximate and about respective isolator diaphragms. A bi-planar pressure flange (202; 502) is welded to each of the connection rings (204; 206; 504; 506). Fluidic coupling from a process fluid pressure inlet of the bi-planar flange (202; 502) to an isolator diaphragm of the co-planar pressure module (200) occurs without encountering any compressive seals. A method (400) of manufacturing a pressure measurement system is also provided.

Description

technical field [0001] A dual-plane process pressure flange couples the process fluid in the process device to a process variable transmitter, typically a process fluid pressure measurement transmitter. Dual plane process pressure measurement systems are known in the art and have several advantages over other configurations. Recently, Rosemount Inc., the assignee of the present invention, developed a standardized coplanar pressure sensor module. The pressure sensor module is coplanar in sensing and takes the form of two process fluid isolation diaphragms that lie approximately in the same plane. Rosemount also has a biplanar pressure flange sold under the trade designation model 305RM, which is configured to direct process fluid to a coplanar pressure sensor module. Background technique [0002] As process applications continue to strive to achieve higher and higher operating ranges and provide more demanding operating conditions, it is desirable to provide pressure transm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L7/08G01L9/00G01L13/02
CPCG01L13/025G01L19/0645G01L19/0007
Inventor 保罗·C·孙戴特丹尼尔·A·诺伯格安德鲁·A·狄乐
Owner ROSEMOUNT INC
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