Emerson Rosemount 3100 Series - Diagnostics for the 3102 and the 3105; General Troubleshooting (the 3102;3105); Diagnostic Data (the 3102;3105)

Reference Manual
00809-0100-4840, Rev. BA
July 2008
5-3
Rosemount 3100 Series
DIAGNOSTICS FOR
THE 3102 AND THE 3105
Menu structures for this section are in Appendix C (Integrated Display Menus)
NOTE:
If using a HART Master Device for programming The 3102 or The 3105, refer
to the following sections for menu structures and parameters:
• Appendix D (Rosemount 3490 Series)
• Appendix E (HART Communicator).
• Appendix F (Parameters accessed over HART Communications)
General
Troubleshooting
(The 3102/3105)
No Display
Check the power supply. Ensure there is a minimum of 12 Vdc at the
instrument terminals. Check that the cable insulation is not preventing contact
at the terminal block.
No Level Reading
Check that the instrument is ticking about once per second. If there is no
ticking, the instrument should be replaced.
Diagnostic Data
(The 3102/3105)
The Rosemount 3102 and The Rosemount 3105 can display diagnostic data
that can aid setting-up and fault-finding.
To aid interpretation, the data will alternate with text to remind what data is
being displayed. In the diagnostic menu, the data cannot be edited.
To enter the diagnostic menu from the PV display, press the blue button
→ to
display the menu option “diAg”.
NOTE:
See Figure C-3 on page C-4 for a map of the diagnostics menu structure.
Diagnostic information is then available by following this sequence:
1. Press the green button
↓ to display the distance-to-target in the selected
base units (m, ft, or in.). The transmitter is measuring distance-to-target
regardless of the duty selected.
(Press the red button
↵ at any time to re-display the “diAg” menu option,
and pressing it again restores the PV display.)
2. Press the green button
↓ to get to the next diagnostic data, “LEUEL”.
This is the level measurement in base units that the transmitter has
calculated based upon the bottom reference and the distance measured,
regardless of the duty chosen for the instrument.
3. Press the green button
↓ to get to the next diagnostic data, “Echo. S”.
This is the echo size being received on a scale of 0 to 100. It is
recommended that a value greater than 10 be achieved.
4. Press the green button
↓ to get to the next diagnostic data, “Echo. n”.
This is the number of echoes being received and can be an indicator of
the data being processed by the transmitter. A thorough understanding of
ultrasonic level systems is required to interpret this data.