Advanced Configuration
October 2018
Reference Manual
00809-0100-4026, Rev KC
Advanced Configuration
266
Extra echo function
The Extra Echo Detection function makes for more robust measurements in the bottom region for
conical or domed bottom shape tanks. In this case, there is no strong echo from the tank bottom when
the tank is empty, and a virtual echo beneath the actual tank bottom can sometimes be seen.
If the transmitter is unable to detect the tank bottom, this function can ensure that the transmitter stays
in Empty Tank state as long as an extra echo is present.
When the tank is empty, use the spectrum function in RRM to verify if such an echo exists or not by
entering a distance that exceeds the tank bottom. The suitable values for Extra Echo Min Distance, Extra
Echo Max Distance and Extra Echo Min Amplitude can also be viewed in the spectrum. The tank is
considered empty when an echo is within the minimum and maximum distance and the amplitude is
above the specified limit.
Amplitude
Distance
Extra echo min. distance
Extra echo max. distance
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