Emerson 3308A Rosemount 3308 Series, Reference Manual

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76
Reference Manual
00809-0100-4308, Rev BA
Section 6: Service and Troubleshooting
December 2014
Service and Troubleshooting
Table 6-3. Maintenance Alerts (M:)
Message Description Recommended actions
Supply Voltage Low The supply voltage is low and may affect
Device Operation.
1. Replace the Power Module, see “Power
module replacement” on page 97 .
Electronics Temperature Out
of Limits The temperature of the electronics
board has exceeded the transmitter’s
operating range.
1. Verify that ambient temperature is within
the operating range.
2. Restart the device.
3. Remote mount the transmitter head away
from the process and environmental
conditions.
4. If the condition persists, replace the device.
Level Measurement Lost No valid Level reading. Reasons may be
multiple:
- No valid surface echo peak in the
measuring range.
- Incorrect transmitter configuration.
1. Analyze the Echo Curve for reason and check
device configuration, especially thresholds,
Near Zone, Maximum Level Rate and
settings on the Lost Measurement tab in the
Alert Setup.
2. Check device physical installation (for
instance probe contamination).
3. Restart level measurement.
4. Restore default settings and reconfigure the
device.
5. If the condition persists, replace the device.
Simulation Active The device is in simulation mode and is
not reporting actual information.
1. If this behavior is not desired, stop
simulation mode.
2. If the condition persists, restart level
measurements.
Low Signal Quality The Signal Quality is below the defined
alert limit.
1. Take action based on your intended use of
this alert.
2. Clean the probe.
3. If no actions were necessary, consider to
change the limit.