User's Manual

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2 Introduction
Gutermann Technology has developed the ZONESCAN NET System for professional leak
detection in public drinking water pipelines. This unmanned, acoustic leak monitoring system
with noise level and correlation measurements ensures that leak detection specialists are
deployed only at the actual leak locations.
Main Features
2.1
Continuous leak monitoring of the entire water network
Distributed over the entire water network, ZONESCAN Loggers continuously monitor and
analyze the noise characteristics and can thereby detect the presence and location of leaks.
Extensive leak database allows for a permanent reduction in water loss
Each data Logger stores the leak analysis results, including the detailed noise level
distributions which are transferred to the ZONESCAN NET via the Repeater and Alpha array.
This measurement data is automatically stored in the powerful ZONESCAN NET database.
This is used to produce detailed logs for the maintenance personnel and, ultimately, a
systematic analysis of historical data for optimizing future water network planning.
Integration of GPS in the ZONESCAN NET System
The ZONESCAN Net System offers the possibility to integrate GPS for automatically
importing noise level and correlation data.
System Overview
2.2
The ZONESCAN Correlating Radio Noise Data Loggers are mounted directly in the water
network to record and to save the existing noise level and the ambient temperature. The
statistical analysis of the stored values indicates whether or not a leak is present. A number
of strategically mounted ZONESCAN Correlating Radio Noise Data Loggers allow all
segments with water losses to be identified.
The data measured by the logger is collected by the repeaters, which are mounted above
ground. The repeaters then transmit the data via radio signal to the alphas. The collected
data is then transmitted by means of GPRS (General Packet Radio Service) via the alpha to
your ZONESCAN NET Program for further processing.
The software automatically evaluates the collected data daily. The more exact the pipe data
entered by the user, the better the results. The results calculated in ZONESCAN NET are
numerically and graphically presented in the form of histograms and frequency distributions,
interpretation of the statistical evaluation facilitating the identification of the leak locations. A
numerical leak indicator simplifies the interpretation of the statistical evaluation.