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The Sing Around technology of
a level meter
The same sing-around technology as in D-Flow flow meters can
be used in level or distance measurements applications. The
level or distance is determined using the following trivial
equation:
 L
= t c/ 2
t is the time for the sound propagation including the bounce
back, and c is the speed of sound.
The extreme time resolution in the UFO ASIC is so high that
the total accuracy is dominated by mechanical tolerances and
calibration errors. This is shown by the repeatability of a
D-Flow-based level meter of ± 0.01 mm or better.
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