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4 Electroacoustic water leak detection
Electroacoustic water leak detection
The illustration above is an example of what might be displayed
in the course of detecting a water leak.
The sound is loudest close to the leak, the further away you get,
the quieter it is.
Left:
The analog display shows approx. 30% scale division, this
is the
current noise value
.
The analog display, however, often fluctuates heavily due to the
changing ambient noise. It is even hard to discern a trend. For
this reason the large digital display (number 16) shows the small
-
est noise value measured at this measurement location over the
measuring time (
current slider value
). Even if the noise gets
louder (ambient), the display will freeze, if the noise gets quieter,
the display will continue to fall.
In the analog display the numeric value 16 will also be displayed
as an inverse segment.
The small digital display shows “0”: there is no value in the
memory yet.
Centre:
The analog display shows approx. 60% scale division.
The large digital display (number 38) shows a greater value than
at the measurement location on the left. This indicates that the
location of the leak is closer.
The small digital display now shows “16”: it is a reminder of the
result from the last measurement location
(last slider value)
.
This helps you determine whether or not you have reached the
leak, or if you have already gone past it.
Right:
The current slider value has dropped because the leak is fur
-
ther away. The last slider value shows “38” again for comparison.
