Liquistation CSF48 Inputs: Interface
179
18.4 Sensor signal
Change the factory settings in this menu if you discover incorrect measurements.
Path: Menu/Setup/Inputs/Ultrasonic interface/Sensor signal
Function Options Info
Acoustic control Options
•Manual
•Automatic
Factory setting
Automatic
Controls the graphic display of the echo signal
Automatic
The transmitter uses the gain value determined in the
self-test (initialization). In the measuring mode, this
value is automatically adapted to the current process
conditions.
Manual
You can enter a fixed gain value for diagnostics or test
purposes.
Common gain values for applications involving relatively clear water and a "hard" interface are between 25 and
35. The values can be as high as 60 if the sludge/water transition is relatively "soft". If you require significantly
higher gain values, this is an indication of overranging. It is then difficult or impossible to reliably evaluate the
echo signal.
Current gain 0 to 100
Factory setting
30
You can only configure the value with manual acoustic
control. The value is read-only for automatic acoustic
control.
Gain control set point
Acoustic control="Automatic"
1 to 50
Factory setting
20
Horizontal position of the intersection of the interface
line with the echo peak. The factory setting "20"
corresponds to 20 % of the maximum display height.
Refresh rate • 2 s
•4 s
•6 s
•8 s
Factory setting
4 s
Time frame for data refresh
Damping 5 to 255
Factory setting
130
Number of averaged values until data refresh
Select a low damping value if the height of the interface
can change very quickly. Higher damping prevents the
system from tracking echo signals that occur briefly (e.g.
caused by material movement, a rake or a floor scraper).
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