User's Manual

Commissioning
Instruction manual 973 SmartRadar LT Page 33
4S
= 2 Level calc. decision switch Ten characters; default setting: - - - - - - - - - -
nd
Pos. Char. Function
1 - Normal communication mode
(other settings are used for broadcast mode)
2 P Plain selection of peaks (only for internal testing)
- Intelligent peak selection
3 R Measurement by means of roof reflector
- Measurement direct on product
4 - 10 - Not used
EX
Exit Exit protection level.
Possibility of peak selection dilemma after gauge startup
It is theoretically possible after a gauge startup, that two peaks are detected of which the second peak is at
a double distance with respect to the first peak. The second peak might be a second order echo, in which
case the first peak is the level peak. But it is also possible that the first peak is from an obstruction, whilst
the second peak is the level peak.
In that case the first peak is used to present the level, with error number 7014 and level reading
‘999999999’.
In the course of the time it may become apparent which is the level peak when there is a level change.
When this happens the error is removed and the correct level is presented.
When however the level in the tank does not change, it may take a long time for the situation with error 7014
to persist. That is why the operator can interfere.
With item
4W
the operator selects the first peak as level peak; with item
4X
the operator selects the second
peak as level peak. In both cases the error 7014 is removed and turned into a warning 7014.
With these commands the operator can inspect the two level values involved in the dilemma and choose the
level value that he judges is the product level.
In addition the operator can cancel the level selection with item
4Y
. This will restore the level failure situation
with level reading ‘999999999’ and error code 7014.
In the course of time, when there has been a sufficient level change, the start-up dilemma will be resolved.
From that moment on error 7014 or warning 7014 will disappear, the level will be presented and the
commands
4W
,
4X
and
4Y
will have no effect.
Item Name Description
4W
Select first peak With this command, the first peak is used as level peak and
error code 07014 is changed to warning code 07014.
Warning code 07014 disappears when there is enough change
in level to determine by the peak selection software that the
selected peak indeed is the product peak.
4X
Select second peak This command makes the second peak the level peak and error
code 07014 is changed to warning code 07014.
Warning code 07014 disappears when there is enough change
in level to determine by the peak selection software that the
selected peak indeed is the product peak.
4Y
Cancel select peak This command cancels the
4W
or
4X
commands and the first
peak is used as level peak with error code 07014.
Only possible as long as there is the warning code 07014.