VEGA VEGASON 71 - 2 … 75 - 2 User Manual
Page 47
Reduction of gain
71 - 2 … 75 - 2
47
Multiple false echo reduction
MODE 1 - 12 and 1 - 13
Tanks with arched ceilings and therefore strong
parabolic effects or silos with fine ground solids can
cause strong multiple echoes.
If the measures carried out in mode 1 - 09 … 11 are
not sufficient, an additional reduction by OFFSET
can be carried out.
Reduction range (Offset range)
= 0.00 … 1.25
Practice values
= 0.00 … 0.20
The reduction (offset) is carried out independent of
the function and starts with the end of the measur-
ing window
Programming example:
Reduction and optimization of e.g. 0,20
Reduction .................................................................
• select mode 1 - 12 in MODEFIELD
• program reduction 0.12 (V) in PARAMETER
FIELD
• then store with STO-button
Optimization .............................................................
• select mode 1 - 13 in MODEFIELD
• activate optimization with MOD-button (the whole
parameter indication 0,12 flashes)
• optimize with Plus-button up to e.g. 0,20 (V) (the
optimization is operated in 0,01 V steps)
If during the optimization a modification to the oppo-
site direction is required, this can be made with the
minus button.
Real echo
Multiple false
echo