Emerson Rosemount Reference Manual page 68

Section 3: HART commissioning
April 2014
To investigate why the device displays a Failed status, choose Troubleshoot in the red device
status box. Another screen will display the active alerts indicating FAILED Sensor 1 Open, and
MAINTENANCE Hot Backup Active, as shown below.
After the sensor has been repaired or replaced, the device status in the Process Variable Overview
section of the DTM will change from Failed to Maintenance.
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Reference Manual
00809-0100-4021, Rev GC
HART® commissioning