User's Manual

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8 The Noise Logging Principal
An understanding on how the Zonescan Loggers build the Histogram will help when interpreting the
results. The following section explains how the sampling process works. The tables depict when the
logger takes a noise sample and what the sample is caused by, e.g a passing car or leak. Traffic &
Consumption noise should be ignored. A large number of samples at the quietest level, indicate a
consistant sound that could be a leak which never stops. The Leak is the closest to the loudest,
quietest noise.
Sample Time Noise Level
(DB)
Description of
Noise
2:00:03 12 Leak Noise
2:00:06 12 Leak Noise
2:00:09 12 Leak Noise
2:00:12 21 Car Coming
2:00:15 18 Car Going
2:00:18 12 Leak Noise
2:00:21 13 Leak Noise
2:00:24 12 Leak Noise
2:00:27 13 Leak Noise
2:00:30 12 Leak Noise
2:00:33 12 Leak Noise
2:00:36 12 Leak Noise
2:00:39 12 Leak Noise
2:00:42 40 Truck Coming
2:00:45 35 Truck Going
2:00:48 25 Leak Noise
2:00:51 13 Leak Noise
2:00:54 13 Leak Noise
2:00:57 25 Toilet Flush
2:01:00 25 Toilet Flush
2:01:03 24 Toilet Flush
2:01:06 25 Toilet Flush
Tab.1