VEGA VEGASON 71 - 1 … 75 - 1 - Manual (Page 45)

Storage of a false echo profile
71 - 1 … 75 - 1 45
False echo learn MODE 1 - 14 … 1 - 17
Construction details inside the vessel such as e.g.
-
weldment joints
- edges
- ladders
- struts etc.
create false echoes.
In a learn cycle these echoes can be determined
and stored on
-
location and
- strength (amplitude).
In a later measuring cycle the stored false echoes
are gated out.
Requirements
-
The strength (amplitude) of the useful echo must
be larger in the interference position than that of
the false echo.
- The vessel must be emptied to a minimum and
the distance to the product must be determined,
e.g. sounded.
Procedure
-
program dipped value for the learn distance
- activate learn cycle
With varying product surfaces the learn cycle can
be repeated. The data is up-dated.
Programming example (with VEGASON 75 - 1)
Indication of gain ...................................................... • can be displayed in mode 1 - 14
Program learn distance ............................................ • select mode 1 - 15 in MODEFIELD
• program learn distance 24.00 in PARAMETER
FIELD
• then store with STO-button
Activate cycle ........................................................... • select mode 1 - 17 in MODEFIELD
• select learn cycle in PARAMETER FIELD with
the figure 1
• then store with STO-button, activate learn cycle
During the learn cycle (approx. 3 … 4 mins.) CAL
flashes.
Delete false echo data ............................................. • the delete procedure can be triggered in mode
1 - 16
0 m
24
~
Real echo
False echo
sounding e.g. 24 m