Technical data

BKI 09 ATEX 0003X  htk4014a0600p_01.doc  75 / 80
5.5 TROUBLESHOOTING
Event Fault Action
Error messages
“Tank full” status marker on*,
reading frozen at max. or min.
value
No fault. The level has reached (and possibly
risen above) the top configured measurement
limit and is either displaying the maximum
(when measuring level) or minimum (when
measuring distance) output.
None.
Measurements should be normal once the level is in the configured
measurement range.
“Tank empty” status marker
on*, reading frozen at max. or
min. value
No fault. The level has entered the gauge’s
bottom dead zone and can no longer detect a
return signal. Either the maximum (when
measuring distance) or minimum (when
measuring level) output is displayed.
None.
Measurements should be normal once the level is in the configured
measurement range.
“Tank full” and “Level lost”
status marker on*, reading
frozen at max. or min. value
No fault. The level has entered the gauge’s
top dead zone and can no longer detect a
return signal.
Empty the tank below the top measurement range limit and
check the measurement.
“Level lost” status marker on*,
reading is frozen
The instrument has lost the level signal, has
searched but not yet found the return pulse.
This may occur if the pulse has dropped
below the threshold. Parasite signals from the
flange or obstructions in the tank may render
the gauge unable to identify the correct
signal.
Ensure that tank is emptied below maximum level and
check the measurement.
If the signal is not detected then modify the control threshold manually as
shown in sections 5.4.2 using the oscilloscope (F7) and
dynamic configuration (F11) windows in PCSTAR 2.
“Reference not found” status
marker on*
Occurs when there is a problem with the time
base on the HF board.
Please contact NIVELCO.
“Level lost” and
“Reference not found” status
markers on*, reading frozen
The probe has received an electrostatic
discharge.
The gauge will search for the level again and resume readings. If the
reading remains frozen then the signal converter may have been damaged
by ESD and may need replacing.
Please contact NIVELCO.