NIVELCO EasyTREK SCD-31 4 Series, Инструкция по установке и программированию, Страница: 24 / 32

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scd340en21p07
P28 - - - a Echo-loss handling FACTORY DEFAULT: 0
a
E
CHO
-
LOSS ERROR
INDICATION
R
EMARK
0 Delayed
During short periods of echo-loss, both Eview and the analogue output will hold last value. The current
output holds last value for twice as long as set in
P20 before going to the " Error Indication Mode " set in
P12 .
1 None During an echo-loss the displayed value on the EView and the analogue output value will hold last value.
2 Advance to full
When echo-loss occurs during filling, the displayed value on the EView and the analogue output value
shifts towards the
" full " tank/silo state with the level elevation rate (filling speed) set in P26
3 Immediate
In case of an echo-loss, ‘no Echo’ will appear in EView and the outputs will change according to the
"
Error Indication Mode
"
set in P12 .
4
No echo-loss indication
in case of empty
tank/silo
Echo-loss may occur in completely empty tanks with a spherical bottom due to deflection of the ultrasonic
beam, or in case of silos with an open outlet. If the echo is lost when the tank/silo is completely empty, the
indication will correspond to empty tank, in all other cases echo-loss indication will function according to
the “Delayed”.