Siemens SITRANS LR460 HART Operating Instructions Manual page 106

Symptom
Reads empty
when vessel not
empty.
Reading
fluctuates.
Echo has double
peak/is split
Reading is too
slow and lags
behind actual
level change.
Device cannot
be programmed
via the
handheld
programmer
You are unable
to modify a
parameter via
remote
communications
Page B-100
Troubleshooting LR460 (cont' d )
Possible cause
Reads vessel bottom
through low dK material.
Due to solids' sloped
surfaces some fluctuation
is normal.
SITRANS LR460 – INSTRUCTION MANUAL
Remedy
Increase TVT manually at vessel bottom
region.
Set Far Range to a lower value.
Lower TVT hover level.
Reduce response rate.
Decrease fill/empty parameter values.
Increase filter time constant in AIFB.
Increase Echo Reform.
Increase response rate.
Turn off Window tracking.
Change fill/empty rate parameter
values.
Increase filter time constant in AIFB.
Make sure local operation is enabled.
Local Operation Enable
See
Also make sure that Write Locking is
Write Locking (LOCK)
Off. See
54.
Make sure remote operation is
Remote operation enable
enabled. See
(REMLOCK)
on page 49. Also make sure
that Write Locking is Off. See
Locking (LOCK)
on page 54.
on page 54.
on page
Write
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