公开(公告)号：DE69616318T2

公开(公告)日：2002-07-11

申请号：DE69616318

申请日：1996-05-31

Applicant: ROSEMOUNT INC

Inventor： WESTFIELD L ,  ANDERSON D ,  LOUWAGIE L ,  PIECHOWSKI A

IPC: G05B11/36 ,  G05B19/042 ,  G05B19/418 ,  H04L25/02

公开(公告)号：DE60018962D1

公开(公告)日：2005-04-28

申请号：DE60018962

申请日：2000-09-22

Applicant: ROSEMOUNT INC

Inventor： BEHM M ,  NELSON L ,  HEDTKE ROBERT ,  FRICK ROGER ,  NELSON D ,  FANDREY MARK ,  SCHNAARE H ,  WESTFIELD L ,  SCHUMACHER S ,  ROPER WESTON

IPC: G01L19/14 ,  G01D1/00 ,  G01L9/00 ,  H01R29/00

公开(公告)号：DE60018962T2

公开(公告)日：2006-04-13

申请号：DE60018962

申请日：2000-09-22

Applicant: ROSEMOUNT INC

Inventor： BEHM M ,  NELSON L ,  HEDTKE ROBERT ,  FRICK ROGER ,  NELSON D ,  FANDREY MARK ,  SCHNAARE H ,  WESTFIELD L ,  SCHUMACHER S ,  ROPER WESTON

IPC: G01L9/00 ,  G01L19/14 ,  G01D1/00 ,  H01R29/00

公开(公告)号：DE69616318D1

公开(公告)日：2001-11-29

申请号：DE69616318

申请日：1996-05-31

Applicant: ROSEMOUNT INC

Inventor： WESTFIELD L ,  ANDERSON D ,  LOUWAGIE L ,  PIECHOWSKI A

IPC: G05B11/36 ,  G05B19/042 ,  G05B19/418 ,  H04L25/02

公开(公告)号：DE69429008T2

公开(公告)日：2002-07-11

申请号：DE69429008

申请日：1994-08-15

Applicant: ROSEMOUNT INC

Inventor： VOEGELE D ,  LANCTOT B ,  WESTFIELD L

IPC: G01R27/14 ,  G01R31/28

Abstract: An improved error detection for microprocessor-based transmitters in two-wire process control loops operating in the process control industry. In particular, techniques are shown which are useful in solving malfunctions or failures of microprocessor-based transmitters. When the transmitter is energized, the impedance of the process loop cabling is resolved and stored, displayed or transmitted as desired. The loop impedance is used to calculate potential of a power supply used to power the control loop. This information is used in testing the two-wire loop.

公开(公告)号：DE69429008D1

公开(公告)日：2001-12-13

申请号：DE69429008

申请日：1994-08-15

Applicant: ROSEMOUNT INC

Inventor： VOEGELE D ,  LANCTOT B ,  WESTFIELD L

IPC: G01R27/14 ,  G01R31/28

Abstract: An improved error detection for microprocessor-based transmitters in two-wire process control loops operating in the process control industry. In particular, techniques are shown which are useful in solving malfunctions or failures of microprocessor-based transmitters. When the transmitter is energized, the impedance of the process loop cabling is resolved and stored, displayed or transmitted as desired. The loop impedance is used to calculate potential of a power supply used to power the control loop. This information is used in testing the two-wire loop.