User's Manual

70 I 72
7.2.1 Example
The selected correlation between sensors 402179 and 402193 in project “Albstadt” below
seems to be left of sensor 402193.
Figure 78: Center Correlation – cont.
As we can see from the KML (Keyhole Markup Language) overlay this is not possible
because there is no direct pipe connection between the sensors. However, the center
distance of 55m tells us that the noise source is 55m from the center between the sensors
towards logger 402193 (if it was towards the first sensor, the center distance would be
negative). From this we can see that the correlation position is the junction with the pipe
coming from the PRV (Pressure Reduction Volve), which is also the cause for the correlation.