Troubleshooting Guides - Emerson Rosemount 5408 Reference Manual

Reference Manual
00809-0100-4408
Table 7-5: Status - Maintenance Required
LCD display Host diagnostic
message message
HIGH High User Defined Alert
ALERT
LOW Low User Defined Alert
ALERT
VAR Linearized Variable Out
of Range
OUTRNG
DC Dielectric Constant
Estimation Degraded
DEGRAD
7.3

Troubleshooting guides

If there is a malfunction despite the absence of alerts, follow the procedures described in
the appropriate troubleshooting guide. Under each of the symptoms, specific suggestions
for solving problems are offered.
Related information
Incorrect level readings
Troubleshooting the 4-20 mA/HART Output
Rosemount 5408 and 5408:SIS Level Transmitters
(continued)
Description
The user defined variable is above
the defined limit.
The user defined variable is below
the defined limit.
The level measurement is outside
the configured range for volume or
scaled variable, or both.
Accuracy of volume/scaled variable
measurement may be degraded.
The dielectric constant estimation is
degraded.
Accuracy of level measurement may
be degraded.
Service and troubleshooting
February 2020
Recommended actions
1. Bring the system to a safe
state.
2. Verify that the process variable
is within specified limits.
3. Reconfirm the user defined
alarm limit.
4. If not needed, disable this
alert.
1. Bring the system to a safe
state.
2. Verify that the process variable
is within specified limits.
3. Reconfirm the user defined
alarm limit.
4. If not needed, disable this
alert.
1. If volume strapping table is
used, make sure level values
within operating range are
included.
2. If scaled variable table is used,
make sure input variable values
within operating range are
included.
1. Check configuration of Bottom
Product Dielectric Constant.
2. Check configuration of
Reference Height and Bottom
Offset.
3. If not needed, disable Tank
Bottom Projection.
107