User's Manual

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Figure 18: Correlation Table Fields
A statement on the Quality of the correlation graph is made. The
assessment ranges from 0 - 100%. The settings for the display of
a possible or probable leak are made under Administration in
Settings
Reference number of the first Logger that was correlated
Reference number of the second Logger that was correlated
Distance L1 specifies the distance between Logger 1 and the
noise source. When the pipe material or a straight section of pipe
is between L1 and L2 then a numerical value will be shown. If
there is a bend in the pipe then a greater > sign will be given next
to the value
Distance L2 specifies the distance between Logger 2 and the
noise source. When the pipe material or a straight section of pipe
is between L1 and L2 then a numerical value will be shown. If
there is a bend in the pipe then a greater > sign will be given next
to the value
If there is a correlation with no pipe data it’s not possible to
calculate the leak location especially without the pipe length. Using
the sound velocity of the defined pipe material enables us to
calculate the Distance of the leak from the middle of the pipe
section between the 2 loggers. If there is a negative value (e.g. -
67.4m) then the noise source is left of center in the direction of
Logger 1. A positive value means the noise source is right of
center and in the direction of logger 2
Quality
Logger 1
Logger 2
Distance L1
Distance L2
Center Distance