705-5100-F21 Datasheet, PDF (35/52 Pages) Magnetrol International, Inc. – Enhanced Model 705 with PROFIBUS PA™ Digital Output

7.0 Reference Information
WARNING!
Explosion hazard. Do not connect or
disconnect equipment unless power
has been switched off or the area is
known to be non-hazardous.
7.1 Troubleshooting
The Eclipse transmitter is designed and engineered for
trouble-free operation over a wide range of operating
conditions. Common transmitter problems are discussed
in terms of their symptoms and recommended corrective
actions. Information on how to handle material buildup
on the probe is also provided in this section.
7.1.1 Troubleshooting System Problems
Symptom
Problem
Solution
LEVEL and % OUTPUT values
are inaccurate.
Basic configuration data is
questionable.
Reconfigure the Probe Model and/or Probe
Mount, Probe Length or Level Offset.
1) Ensure the Level is accurate.
Interface level has significant emulsion. Examine process to reduce/eliminate
emulsion layer.
LEVEL readings are repeatable but
consistently high or low from actual
by a fixed amount.
Configuration data does not
accurately match probe length
or tank height.
Ensure proper Probe Model, Level Offset
& probe length.
Adjust trim level value by the amount of
noted inaccuracy.
LEVEL and % OUTPUT values
fluctuate.
Turbulence
Increase the Damping factor until the
readings stabilize.
High Frequency connection
Check Fid Spread (should be stable within
±10 counts).
LEVEL and % OUTPUT values
all reading low vs. actual.
Lower dielectric material over higher Select Fixed Threshold option.
dielectric material, e.g., oil over water
Coating, clumping or buildup on probe These may be expected inaccuracies due
to affect on pulse propagation.
Dense, water based foam
These may be expected inaccuracies due
to affect on pulse propagation.
Level Reading on Display is stuck at
full scale.
Software believes probe is flooded
(level near very top of probe).
Check actual level. If probe is not flooded,
Check for buildup or obstructions near top
of probe. Select higher dielectric range.
Check for condensation in probe
connection. Add Blocking Distance.
LEVEL and % OUTPUT values
values all at maximum level.
Possible configuration issue
with single rod probe
1) Increase Blocking Distance
2) Increase Dielectric Range
LEVEL and % OUTPUT values
reading high vs. actual.
Possible obstruction in tank
affecting single rod probe
1) Increase Dielectric Range until
obstruction is ignored
2) Relocate probe away from obstruction
LEVEL value reading high when
should be zero.
Transmitter loose or disconnected
from probe
Ensure transmitter connected securely
to probe.
NOTE: When consulting the factory concerning improper operation, use proper tables on Pages 50-51. Enter all data when transmitter
is working CORRECTLY and INCORRECTLY.
57-645 Eclipse Guided Wave Radar Transmitter - PROFIBUS PA^™
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