MJK Automation Shuttle Ultrasonic Level Transmitter and Sensor - Manual (Page 28)

28 GB Shuttle Manual 100316 SW 838023
Display and keyboard
Start of the learning function
First time activation
With this function Shuttle
® learns if there are any distur-
bances in the well or tank that could appear as a true echo.
Disturbances can result from inlet pipes, the pump installa-
tion, a slanted bottom, etc.
Shuttle
® stores the levels of the false echoes, which will
practically eliminate the chance of locking on a false echo.
Shuttle
® will look for a maximum of 15 echos.
Shuttle ® starts to investigate the tank / well for disturbances.
The investigation is finished when all segments in the bar
graph are lit.
Note:
According to the number of disturbing elements,
this process may take several minutes.
Select the function with the arrow keys.
Note:
Only this selection is available if the learning
function settings have been erased earlier or the
function has never been activated before.
In this example, Shuttle ®
has found two false echos
➀
(the inlet) and ➁ (from the
pump intallation) and also
the correct echo from the
bottom of the well / tank.
Select the level closest to
the correct level +/- 15 cm
(➂).
If none of the echoes are
from a true level meas-
urement, but are all false
echoes (e.g. a slanted well
bottom), select 'nf'
(= none found).
➀
➁
➂
Shuttle ® now reverts to normal read-out.
Note: If 'nf'was selected as explained above, Shuttle ®
will normally indicate system error until a varying
echo from a true level surface is detected.
2,00 m
0,00 m
1,75 m
0,18 m