公开(公告)号：EP2150861B1

公开(公告)日：2013-01-16

申请号：EP08767762.1

申请日：2008-05-16

申请人： Rosemount, Inc.

发明人： NELSON, Richard, L. ,  LOVEGREN, Eric, R. ,  JOHNSON, James, A.

IPC分类号： G05B19/042 ,  G05B19/418

CPC分类号： G05B19/042 ,  G05B2219/25282 ,  G05B2219/25286

公开(公告)号：EP1864268A2

公开(公告)日：2007-12-12

申请号：EP06738640.9

申请日：2006-03-16

申请人： Rosemount, Inc.

发明人： LONGSDORF, Randy, J. ,  HUISENGA, Garrie, D. ,  JOHNSON, James, A.

IPC分类号： G08C19/02

CPC分类号： G01R19/2509 ,  G05B19/0425 ,  G05B2219/25189 ,  G05B2219/25428 ,  G08C19/02

摘要： A process device (12) is configured for coupling to a two wire process control loop (18) . Loop current output circuitry (60) is configured to apply an output current to the two wire process control loop (18) . Loop current verification circuitry (64) is coupled to the two wire process control loop (18) and configured to detect errors in the applied output current. At least a portion of the loop current verification circuitry (64) is independent from the loop current output circuitry (60) .

公开(公告)号：EP2158656B1

公开(公告)日：2020-10-21

申请号：EP08767513.8

申请日：2008-05-02

申请人： Rosemount Inc.

发明人： JOHNSON, James, A. ,  NELSON, Richard, L.

IPC分类号： H01M2/10 ,  H05K7/14

公开(公告)号：EP1864268B1

公开(公告)日：2016-09-21

申请号：EP06738640.9

申请日：2006-03-16

申请人： Rosemount Inc.

发明人： LONGSDORF, Randy, J. ,  HUISENGA, Garrie, D. ,  JOHNSON, James, A.

IPC分类号： G08C19/02

CPC分类号： G01R19/2509 ,  G05B19/0425 ,  G05B2219/25189 ,  G05B2219/25428 ,  G08C19/02

公开(公告)号：EP2158656A2

公开(公告)日：2010-03-03

申请号：EP08767513.8

申请日：2008-05-02

申请人： Rosemount, Inc.

发明人： JOHNSON, James, A. ,  NELSON, Richard, L.

IPC分类号： H02H9/00

摘要： An industrial process field device is provided. The device includes wireless process field device electronics disposed within the industrial process field device and at least one battery cell disposed within the industrial process field device and operably coupled to the wireless process field device electronics. A circuit is provided that senses an electrical characteristic related to the at least one cell and provides an output to a switch to decouple the at least one cell from the industrial process field device electronics in response to certain conditions. Such conditions include too much current flowing from the at least one cell; the voltage of the at least one cell being too low; or a short circuit being generated or otherwise observed.

公开(公告)号：EP2774235A1

公开(公告)日：2014-09-10

申请号：EP12809375.4

申请日：2012-10-25

申请人： Rosemount Inc.

发明人： JOHNSON, James, A. ,  NELSON, Richard, L.

IPC分类号： H02H3/20 ,  H02H11/00

CPC分类号： H02H11/002 ,  H02H3/18 ,  H02H3/202 ,  H02H11/003 ,  H02H11/006 ,  H02J7/0034

摘要： A wireless field device (200) for use in an industrial process control system includes a power source (202) having a power source output. Field device is circuitry powered by the power source output. A protection circuit (308) is configured to protect the field device circuitry. The protection circuit (308) includes reverse polarity protection circuit coupled to the power source output that electrically isolates the power source output from the field device circuitry in response to a reverse polarity connection between the power source output and the field device circuitry. An overvoltage protection circuit (310) disconnects the power source output from the field device circuitry is a voltage of the power source output exceeds a threshold.

公开(公告)号：EP2150861A1

公开(公告)日：2010-02-10

申请号：EP08767762.1

申请日：2008-05-16

申请人： Rosemount, Inc.

发明人： NELSON, Richard, L. ,  LOVEGREN, Eric, R. ,  JOHNSON, James, A.

IPC分类号： G05B19/042 ,  G05B19/418

CPC分类号： G05B19/042 ,  G05B2219/25282 ,  G05B2219/25286

摘要： A field device (102) for use in monitoring or controlling an industrial process includes two wire process control loop (127) electrical connections. Digital communications monitoring circuitry (162) coupled to the electrical connections (127) and is configured to control power to the field device (102) electrical circuitry in response to a digital signal on the two wire process control loop (126).