公开(公告)号：CA1300925C

公开(公告)日：1992-05-19

申请号：CA543028

申请日：1987-07-27

Applicant: ROSEMOUNT INC

Inventor： KNECHT THOMAS A ,  ROMO MARK G

IPC: G01L13/06 ,  G01L7/08 ,  G01L9/00 ,  G01L9/06 ,  G01L13/02 ,  G01L19/04

Abstract: A deflecting ?iaphragm differential pressure sensor is formed so all electrical elements and connections from external circuitry to the sensor are isolated from the pressure media. The deflecting, pressure sensing diaphragm is made of a semi-conductor material, having piezoresistors disposed on a surface thereof to form strain gages to sense deflection of the diaphragm. The strain gage resistors are media isolated by a layer that overlies the strain gage resistors. All forms of the invention provide environmental protection for the electrical connections for external circuitry, which are subject to corrosion from the pressure media.

公开(公告)号：BR8707761A

公开(公告)日：1989-08-15

申请号：BR8707761

申请日：1987-07-23

Applicant: ROSEMOUNT INC

Inventor： KNECHT THOMAS A ,  ROMO MARK G

IPC: G01L13/06 ,  G01L7/08 ,  G01L9/00 ,  G01L9/06 ,  G01L13/02 ,  G01L19/04

公开(公告)号：CA2775895C

公开(公告)日：2015-03-31

申请号：CA2775895

申请日：2010-09-30

Applicant: ROSEMOUNT INC

Inventor： ROMO MARK G

IPC: G01L9/00

Abstract: A pressure transmitter (12) with pressure sensor mount includes pressure measurement circuitry (62). A metal body (100) of the pressure transmitter has a pressure coupling configured to couple to a process pressure P. A pressure sensor (40) is configured to provide an output related to an applied pressure to the pressure measurement circuitry. A conduit (120) is coupled to the pressure sensor (40) and configured to apply an applied pressure corresponding to the process pressure to pressure sensor. A non-conductive spacer (110) is configured to electrically isolate the conduit (120) from the metal body (100). The non-conductive spacer (110) has an opening (112) formed therein and is arranged to convey the applied from the metal body (100) to the conduit (120).

公开(公告)号：DE112005000415T5

公开(公告)日：2006-12-28

申请号：DE112005000415

申请日：2005-02-11

Applicant: ROSEMOUNT INC

Inventor： ROMO MARK G ,  RUD STANLEY E ,  WILLCOX CHARLES R ,  KARSCHNIA ROBERT J

IPC: G02B6/26 ,  G02B6/35

Abstract: An electrically variable optical attenuator and associated methods are disclosed. In one aspect, the attenuator includes at least one sensor that provides a sensor output with respect to a variable that affects attenuation. Methods of characterizing the attenuator include obtaining a set of attenuation/sensed variable data, and generating a relationship (such as a look-up table or mathematical function) relating the sensed variable to the attenuation. Aspects of the invention also include characterizing the control input/attenuation output to be related by a selected mathematical function.

公开(公告)号：CZ9602837A3

公开(公告)日：1997-11-12

申请号：CZ283796

申请日：1995-02-22

Applicant: ROSEMOUNT INC

Inventor： ROMO MARK G

IPC: G01L9/04 ,  G01L9/00

CPC classification number: G01L9/0042

公开(公告)号：CZ283796A3

公开(公告)日：1997-11-12

申请号：CZ283796

申请日：1995-02-22

Applicant: ROSEMOUNT INC

Inventor： ROMO MARK G

IPC: G01L9/04 ,  G01L9/00

Abstract: A micromachined device is described receiving a pressurizable fluid has a plurality of layers bonded together along at least one bond interface, the bond interface having a terminus bordering the pressurizable fluid. In a vicinity of at least one bond interface at least one layer has a shape that reduces a stress magnitude near the bond terminus. In a preferred embodiment a width of at least one layer increases toward the bond interface, to increase the pressure at which the device can operate without fracturing. In another embodiment, both layers bordering the bond interface have widths in the vicinity of the bond interface that increase toward the bond interface. Alternately, the layers have walls shaped such that, for a reference line perpendicular to the bond interface and passing through an end of the bond interface bordering the cavity, the cavity protrudes between the reference line and at least one of the walls.

公开(公告)号：BR9507211A

公开(公告)日：1997-09-09

申请号：BR9507211

申请日：1995-02-22

Applicant: ROSEMOUNT INC

Inventor： ROMO MARK G

IPC: G01L9/04 ,  G01L9/00

Abstract: A micromachined device is described receiving a pressurizable fluid has a plurality of layers bonded together along at least one bond interface, the bond interface having a terminus bordering the pressurizable fluid. In a vicinity of at least one bond interface at least one layer has a shape that reduces a stress magnitude near the bond terminus. In a preferred embodiment a width of at least one layer increases toward the bond interface, to increase the pressure at which the device can operate without fracturing. In another embodiment, both layers bordering the bond interface have widths in the vicinity of the bond interface that increase toward the bond interface. Alternately, the layers have walls shaped such that, for a reference line perpendicular to the bond interface and passing through an end of the bond interface bordering the cavity, the cavity protrudes between the reference line and at least one of the walls.

公开(公告)号：PL316142A1

公开(公告)日：1996-12-23

申请号：PL31614295

申请日：1995-02-22

Applicant: ROSEMOUNT INC

Inventor： ROMO MARK G

IPC: G01L9/04 ,  G01L9/00

Abstract: A micromachined device is described receiving a pressurizable fluid has a plurality of layers bonded together along at least one bond interface, the bond interface having a terminus bordering the pressurizable fluid. In a vicinity of at least one bond interface at least one layer has a shape that reduces a stress magnitude near the bond terminus. In a preferred embodiment a width of at least one layer increases toward the bond interface, to increase the pressure at which the device can operate without fracturing. In another embodiment, both layers bordering the bond interface have widths in the vicinity of the bond interface that increase toward the bond interface. Alternately, the layers have walls shaped such that, for a reference line perpendicular to the bond interface and passing through an end of the bond interface bordering the cavity, the cavity protrudes between the reference line and at least one of the walls.

公开(公告)号：CA2775895A1

公开(公告)日：2011-04-07

申请号：CA2775895

申请日：2010-09-30

Applicant: ROSEMOUNT INC

Inventor： ROMO MARK G

IPC: G01L9/00

Abstract: A pressure transmitter (12) with pressure sensor mount includes pressure measurement circuitry (62). A metal body (100) of the pressure transmitter has a pressure coupling configured to couple to a process pressure P. A pressure sensor (40) is configured to provide an output related to an applied pressure to the pressure measurement circuitry. A conduit (120) is coupled to the pressure sensor (40) and configured to apply an applied pressure corresponding to the process pressure to pressure sensor. A non-conductive spacer (110) is configured to electrically isolate the conduit (120) from the metal body (100). The non-conductive spacer (110) has an opening (112) formed therein and is arranged to convey the applied from the metal body (100) to the conduit (120).

公开(公告)号：DE10392623B4

公开(公告)日：2009-09-24

申请号：DE10392623

申请日：2003-04-17

Applicant: ROSEMOUNT INC

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

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

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.