Table 7-17: Troubleshooting Chart
Symptom Possible cause Action
No level reading • Power disconnected
• Data communication cables
disconnected
• Probe is not connected
• Check the power supply
• Check the cables for serial data
communication
• View the Diagnostic window, see
Diagnostics in order to check active
status messages
• Check if “Probe Missing” is active. If it
is, check the probe connection
No HART communication. • COM Port configuration does not
match the connected COM Port
• Cables may be disconnected
• Wrong HART address is used
• Hardware failure
• HART resistor
• Check that correct COM Port is selected
in the HART server (see Specify the
COM port)
• Check wiring diagram
• Verify that the 250 Ω resistor is in the
loop.
• Check cables
• Make sure that correct HART short
address is used. Try address=0
• Check Analog Output current value to
verify that transmitter hardware works
• Check that the correct settings are
used in Rosemount Radar Master.
Select Device, Search from the menu.
Click Settings and HART tab. Make sure
the values are properly chosen. The
standard values are shown in Specify
the COM port.
Analog Out is set in Alarm.
Measurement or transmitter failure. View the Diagnostic window, see
Diagnostics to check active error and
status messages.
Both Surface pulse and
Interface Pulse are detected,
but Interface Level is reported
as unknown in the Echo Curve
plot.
Measurement Mode is set to “Level Only”. Set Measurement Mode to “Level and
Interface” (see Measurement mode).
Both Surface pulse and
Interface pulse are detected,
but Interface Level is reported
as unknown in the Echo Curve
plot.
Interface pulse is identified as a double
bounce
No action required.
Surface pulse and Interface pulse are very
close
Use the Echo Curve plot to verify that the
surface and interface are close, see
Analyzing the measurement signal.
Service and troubleshooting Reference Manual
April 2019 00809-0100-4530
184 Rosemount 5300 Level Transmitter
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