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Reference Manual
00809-0100-4021, Rev GC
Section 3: HART commissioning
April 2014
HART® commissioning
LCD display message
The LCD display on the transmitter will display a message HOT BU SNSR 1 FAIL; WARN AV DEGRA as
well as the output of the average temperature. Because Sensor 1 has failed, this average
temperature output is the value of Sensor 2 only.
After the sensor has been repaired or replaced, the LCD display on the transmitter will display a
message WARN HOT BU, reminding you that Hot Backup is still active, as well as the normal
output of the average temperature. The warning message will clear after you have reset Hot
Backup. It is recommended that Hot Backup be reset immediately after repairing or replacing
the damaged sensor. See “Reset Hot Backup: Fast Keys 2-2-4-1-4” on page 78.
DeltaV message
Alarms will show up on the bottom toolbar, as shown below:
To view the alarm, simply click on the device on the toolbar. A faceplate with further information
on the active alarms will appear. It will show an ADVISE Sensor Summary, a FAILED Sensor 1 Open,
and a MAINTENANCE Hot Backup Active.
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