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5 SePem 01 Master
Analysis of the graphics
The x-axis corresponds to time, the y-axis is the measurement
value (noise level).
A noise level that is continuously much higher than zero may
indicate the presence of a leak (Fig. 9).
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Fig. 9: Graphics showing a high probability of a leak
If the noise level is continuously close to zero then the proba-
bility of a leak is low (Fig. 10). Short, high peaks (spikes) may
indicate, for example, passing vehicles or water being withdrawn
for a short period.
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Fig. 10: Graphics showing a low probability of a leak