公开(公告)号：DE60213258T2

公开(公告)日：2007-06-06

申请号：DE60213258

申请日：2002-08-16

Applicant: ROSEMOUNT INC

Inventor： KLEVEN A

IPC: G01R19/22 ,  G01F1/32 ,  G01F25/00 ,  G01R29/22 ,  G01R31/28

Abstract: A diagnostic device for testing a piezoelectric sensor includes an AC source configured to apply an AC signal to the piezoelectric sensor at two or more different frequencies. The response of the piezoelectric sensor can be measured and used for diagnostics.

公开(公告)号：DE60213258D1

公开(公告)日：2006-08-31

申请号：DE60213258

申请日：2002-08-16

Applicant: ROSEMOUNT INC

Inventor： KLEVEN A

IPC: G01R19/22 ,  G01F1/32 ,  G01F25/00 ,  G01R29/22 ,  G01R31/28

Abstract: A diagnostic device for testing a piezoelectric sensor includes an AC source configured to apply an AC signal to the piezoelectric sensor at two or more different frequencies. The response of the piezoelectric sensor can be measured and used for diagnostics.

公开(公告)号：DE60010728T2

公开(公告)日：2005-05-12

申请号：DE60010728

申请日：2000-09-22

Applicant: ROSEMOUNT INC

Inventor： KLEVEN A ,  TEWFIK H

IPC: G08C15/00 ,  G01D21/00 ,  G05B13/04 ,  G05B19/042 ,  G05B23/02 ,  G06F17/10 ,  G06F17/17 ,  G08C13/00 ,  G08C19/02 ,  G05B19/418

Abstract: A transmitter for measuring a process variable includes a sensor configured to couple to a process and having a sensor output related to the process variable. A microprocessor coupled to the sensor output provides a process variable output which is a function of an orthogonal-polynomial of the sensor output. A transmitter output is configured to provide an output related to the process variable.

公开(公告)号：DE60010728D1

公开(公告)日：2004-06-17

申请号：DE60010728

申请日：2000-09-22

Applicant: ROSEMOUNT INC

Inventor： KLEVEN A ,  TEWFIK H

IPC: G08C15/00 ,  G01D21/00 ,  G05B13/04 ,  G05B19/042 ,  G05B23/02 ,  G06F17/10 ,  G06F17/17 ,  G08C13/00 ,  G08C19/02 ,  G05B19/418

Abstract: A transmitter for measuring a process variable includes a sensor configured to couple to a process and having a sensor output related to the process variable. A microprocessor coupled to the sensor output provides a process variable output which is a function of an orthogonal-polynomial of the sensor output. A transmitter output is configured to provide an output related to the process variable.