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Pulscon LTC
Trouble-shooting
Error
Output
A warning or
Depending on the configuration
alarm has
occurred.
Measured value
(00) is incorrect
F m/ft
E m/ft
No change off
measured value
on filling/
emptying
E 641 (loss of
If the instrument is configured to
echo) after turn
HOLD by loss of echo the output is
on the power
set to any value/current.
supply
Device displays
a level when the
tank is empty.
Measured value
incorrect (slope
error in the entire
measuring
range)
15.3
Application errors
20 mA/100 %
expected
actual
t →
4 mA/0 %
20 mA/100 %
actual
expected
t →
4 mA/0 %
20 mA/100 %
actual
expected
t →
4 mA/0 %
20 mA/100 %
expected
2.) actual
1.) actual
t →
4 mA/0 %
Possible cause
see table of
error messages
(see page 72)
yes →
"measured
distance" (008)
OK?
↓
no
yes →
An interference
echo may have
been evaluated.
interference echo
from installations,
nozzle or extension
on the probe
noise level during
the initialisation
phase to high.
incorrect probe
length
tank properties
incorrect.
medium properties
incorrect.
Remedy
1.
see table of error messages
(see page 72)
1.
check "empty calibr." (005) and
"full calibr." (006)
2.
check linearisation:
→ "level/ullage" (040)
→ "max. scale" (046)
→ "diameter vessel" (047)
→ check table
1.
carry out tank mapping
→ basic setup
1.
carry out tank mapping
→ basic setup
2.
if necessary, clean probe
3.
if necessary, select better
mounting position
repeat once more "empty calibr."
(005).
Caution! Before conformation
O
S
change with
or
to the edit
mode.
1.
carry out automatic probe
length detection when the tank
is empty.
2.
carry out mapping over entire
probe when the tank is empty
(probe free!).
LN < 4 m and "aluminium tank"
tank properties selected
→ calibration not possible
→ selection
→ select standard
→ thresholds too high
Select lower medium properties.
73
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