Dinel ULM -70 Series, Инструкция по эксплуатации

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A
DVANCED SETTINGS
In the supplemented con fi guration, you can set parameters of
sensitivity, mapping of false re fl ections, temperature difference
compensation, behaviour in case of fault conditions or HART
communication. Here, you can set the sensor into the initial state
or reset it as well.
The settings are accessible in the basic menu under the item "SERVICE".
"SENSITIVITY" (Level meter sensitivity)
The setting is de fi ned in three steps of the level meter sensitivity.
" low " – Low sensitivity in case of surrounding interferences affecting the measurement.
" medium " – Medium sensitivity (suitable for most applications).
" high " – High sensitivity for measured mediums partly absorbing the ultrasonic signal (bulk-solid mat., foams)
You can set the sensitivity in three degrees:
"low", "medium" and "high".
If there are no above obstacles in the tank, it is
not necessary to start this mode
"TEACHING" (Mapping of false re fl ections)
The mode serves for suppressing false re fl ections resulting from re fl ection of the ultrasonic
signal from roughnesses on walls of the tank, various partitions, mixers or other obstacles. The
sensor starting this mode detects false re
fl ections and save them in the memory. Then these false
re fl ections will not affect the subsequent measurement (they are masked).
Before starting the mode, empty the tank under the level of the last obstacle in the tank.
1. Press the button
[OK]
to access the basic menu. Press the button
[ ↑ ↓ ] to select the item
"SERVICE" and press the button [OK]
to con fi rm. In the next menu use the buttons
[ ↑ ↓ ]
and [OK] to select the item "TEACHING".
2. Now the item "TEACHING" is displayed. Press the button [OK] to set the value "LEVEL DISTANCE"
– the expected distance of the sensor front from the medium surface level. If you do not know the
level distance exactly, set a smaller value (in the tolerance
fi eld according to Fig. 17.).
3. After the value of "LEVEL DISTANCE" is set, use the button [OK] to start the mode "TEACHING"
(mapping of false re fl ections). During the mapping process, the word "RUNNING" is displayed
on the display.
4. The mapping of false re fl ections is completed after the word "DONE" is displayed. Then you can
leave the menu by pressing the button [ESC] .
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