A process device is configured for coupling to a two wire process control loop. Loop current output circuitry is configured to apply an output current to the two wire process control loop. Loop current verification circuitry is coupled to the two wire process control loop and configured to detect errors in the applied output current. At least a portion of the loop current verification circuitry is independent from the loop current output circuitry.
申请公布号
EP1864268(B1)
申请公布日期
2016.09.21
申请号
EP20060738640
申请日期
2006.03.16
申请人
ROSEMOUNT INC.
发明人
LONGSDORF, RANDY, J.;HUISENGA, GARRIE, D.;JOHNSON, JAMES, A.