ULM–70
©
Dinel, s.r.o.
13
T E A C H I N G
S E T L E V E L D I S T A N C E :
0 6 0 0 0 m m
R U N N I N G
T E A C H I N G
S E T L E V E L D I S T A N C E :
0 6 0 0 0 m m
D O N E
P R E S S
E S C
T O E X I T
The mode "TEACHING" will stop automati-
cally after ca. 1000 measurements.
In case of installed mixers, it is
necessary
to position the mixers under the level meter
(direct the mixer blade to the ultrasonic sig-
nal beam).
Note: If there are significant obstacles in
the upper half of the tank,
multiple false
reflections
can occur especially in closed
tanks. In such cases it is necessary to re-
duce the level in the tank as much se pos-
sible to correctly mask these possible multi-
ple false reflections.
Fig. 17: The "Level distance" zone
1/2 of Tank
Obstacles
Tolerance zone for
"LEVEL DISTANCE" value
T E A C H I N G
S E T L E V E L D I S T A N C E :
0 6 0 0 0 m m
R U N N I N G
P R E S S
O K
T O
S T O P
MEDIUM TEMPERATURE
The level meter is equipped with
automatic temperature compensation
. If in the tank (open chan-
nel) is a big difference between the temperature of the measured medium (liquid) and temperature
in the place of installation of the ULM (see mode, "DIAGNOSTICS" page 15), it is advised to im-
prove the precision of the measurement by the zone temperature compensation. Otherwise, this
mode is
not necessary to run
.
S E N S I T I V I T Y
T E A C H I N G
M E D I U M T E M P E R A T U R E
F A I L U R E M O D E
H A R T
F A C T O R Y D E F A U L T
R E S E T
M E D I U M T E M P E R A T U R E
Y E S
+ 2 0 ° C
Inactive compensation (initial state), the
word "NO" appears on the display.
See the "UNITS" menu for temperature unit
selection (°C or °F).
After start of the zone temperature compensation mode it is necessary to set the temperature of
the surface of the medium. The level meter then calculates the average value from the medium
temperature and the temperature at the installation place of the level meter. With such an average
temperature it counts in calculating of the velocity of acoustic waves propagation and for determina-
tion of the level position.
If during the scanning of the tank in the bottom of the display ap-
pears the dialog "press OK to stop" (see figure) the level meter
already found no further obstacles and "TEACHING" mode may be
terminated. If it is not terminated, the level meter is still ready for the
possible presence of obstacles (e.g. paddles of the agitator). Once
it registers a further obstacle, the dialogue disappears and the obstacle is erased. This process may
be repeated up to 1000 cycles. After this the "TEACHING" mode is automatically stopped.
Level Distance
