公开(公告)号：CA2804988C

公开(公告)日：2016-01-12

申请号：CA2804988

申请日：2011-06-01

Applicant: ROSEMOUNT INC

Inventor： SCHULTE JOHN P ,  TYSON DAVID G ,  KLOSINSKI ANDREW J

IPC: G01L9/00 ,  G01L13/02 ,  G01L15/00

Abstract: A pressure sensor assembly for sensing a pressure of a process fluid includes a sensor body (56) having a cavity (132, 134) formed therein and first and second openings to the cavity configured to apply first and second pressures (PI, P2). A diaphragm (106) in the cavity separates the first opening from the second opening and is configured to deflect in response to a differential pressure between the first pressure and the second pressure. A capacitance based deformation sensor (59) is provided and configured to sense deformation of the sensor body in response to a line pressure applied to the sensor body.

公开(公告)号：DE60143358D1

公开(公告)日：2010-12-09

申请号：DE60143358

申请日：2001-07-12

Applicant: ROSEMOUNT INC

Inventor： ROPER WESTON R ,  TYSON DAVID G ,  WESTFIELD BRIAN L ,  GABOURY MICHAEL J

IPC: G05B19/042 ,  G08C19/02 ,  G05B19/414 ,  H04Q9/00

公开(公告)号：DE10020941B4

公开(公告)日：2009-11-12

申请号：DE10020941

申请日：2000-04-28

Applicant: ROSEMOUNT INC

Inventor： WESTFIELD BRIAN L ,  ROPER WESTON T ,  TYSON DAVID G

IPC: G01D5/12 ,  H02J1/00 ,  G05B19/042 ,  G05B19/418 ,  G05F3/10 ,  G08C19/00 ,  H02M3/00

公开(公告)号：AU2003278758A1

公开(公告)日：2004-03-29

申请号：AU2003278758

申请日：2003-09-03

Applicant: ROSEMOUNT INC

Inventor： TRIMBLE STEVEN R ,  ORTH KELLY M ,  NELSON RICHARD L ,  TYSON DAVID G

IPC: G01L19/08 ,  G01D11/24 ,  G08C19/02

公开(公告)号：AU7336701A

公开(公告)日：2002-02-25

申请号：AU7336701

申请日：2001-07-12

Applicant: ROSEMOUNT INC

Inventor： ROPER WESTON R ,  TYSON DAVID G ,  WESTFIELD BRIAN L ,  GABOURY MICHAEL J

IPC: G08C19/02 ,  G05B19/042 ,  G05B19/414 ,  H04Q9/00

Abstract: A two-wire industrial process control transmitter includes a sensor, at least two integrated circuits, and a level shift circuit. The first integrated circuit contains the analog measurement circuit that includes a sensor detection circuit and the analog portion of a digital-to-analog convertor. The second integrated circuit contains the digital system circuit that includes a modem and the digital portion of the analog-to-digital convertor. The first and second ICs may be powered at different voltage levels to maximize the power of the analog circuit and improve resolution. Alternatively, the ICs may be powered at the same voltage level, but the digital circuits are divided among several stacked dies to minimize the voltage for each digital circuit. In either case, the level shifting circuit shifts the voltage level between the analog and digital circuits.