Gutermann Technology ZS820915AL2 Wireless Transceiver for data collection User Manual ZONESCAN NET Manual 2 1 Rev3 en

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Document Title	ZONESCAN-NET Manual 2.1 Rev3-en
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Manual
EN
– Version 2.1
Table of Contents
Indications for Use.......................................................................................................... 4
1.1
Symbols .................................................................................................................. 4
1.2
Safety ...................................................................................................................... 4
1.3
Warning................................................................................................................... 5
1.4
Intended Use ........................................................................................................... 5
Introduction .................................................................................................................... 6
2.1
Main Features ......................................................................................................... 6
2.2
System Overview .................................................................................................... 6
Leak Detection View....................................................................................................... 8
3.1
Leak Detection Map ................................................................................................ 8
3.1.1
Structure of the Screen .................................................................................... 8
3.1.2
Google Maps Area ..........................................................................................10
3.1.3
Correlations and Logger Layer ........................................................................16
3.2
Correlations Table ..................................................................................................18
3.2.1
Table Fields ....................................................................................................18
3.2.2
Entering Pipe Data Manually ...........................................................................20
3.2.3
Entering Pipe Data with the Pipe Wizard .........................................................21
3.2.4
Correlation Context Menu ...............................................................................24
3.2.5
Correlation Graph............................................................................................26
3.2.6
Correlation Spectrum ......................................................................................27
3.2.7
Correlation Report ...........................................................................................28
3.3
Logger Noise Table ................................................................................................30
3.3.1
Table Fields ....................................................................................................30
3.3.2
Logger Noise Context Menu ............................................................................32
Print Menu .....................................................................................................................46
Maintenance View .........................................................................................................48
5.1
Logger Table ..........................................................................................................48
5.1.1
Table Fields ....................................................................................................49
5.1.2
Context Menu ..................................................................................................49
5.2
Alpha Table ............................................................................................................51
5.2.1
Table Fields ....................................................................................................52
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5.3
Repeater Table ......................................................................................................52
5.3.1
Table Fields ....................................................................................................52
Administration View .......................................................................................................53
6.1
Current Project Settings .........................................................................................54
6.1.1
General Table .................................................................................................54
6.1.2
Alpha Table .....................................................................................................55
6.1.3
Repeater Table ...............................................................................................56
6.1.4
Logger Table ...................................................................................................57
6.1.5
Correlations Table ...........................................................................................59
6.1.6
Leak Score Table ............................................................................................60
6.1.7
Calculation Table ............................................................................................60
6.1.8
Events Table ...................................................................................................61
6.1.9
E-mail Settings Table ......................................................................................62
6.1.10
Administration Table .......................................................................................63
6.2
KML Overlays.........................................................................................................64
6.3
Projects ..................................................................................................................64
6.4
Users .....................................................................................................................65
6.5
System ...................................................................................................................65
6.5.1
Messages........................................................................................................66
Appendices ...................................................................................................................67
7.1
Correction explained in detail .................................................................................67
7.2
Center Correction explained in detail......................................................................69
7.2.1
Example ..........................................................................................................70
Hardware Description ....................................................................................................71
8.1
Overview ................................................................................................................71
8.2
Installation ..............................................................................................................72
8.3
Conformity..............................................................................................................72
Disposal ........................................................................................................................72
10
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Imprint .......................................................................................................................72
1 Indications for Use
It is essential to read the operating instructions carefully and completely before using the first
time the equipment and software. They contain important information on safety, installation
and use. Keep these instructions in a safe place.
1.1 Symbols
Warning of dangerous situations that can cause injury and
damage to the devices.
Warning
The ZONESCAN Correlating Radio Noise Data Logger
contains a very powerful magnet. The operation of
cardiac pacemakers and implanted defibrillators can be
influenced. People with cardiac pacemakers and
implanted defibrillators are not permitted anywhere near
this product.
Important notes and tips. Follow these guidelines.
Never put in your household waste bin.
1.2 Safety
The operating and maintenance personnel must read carefully the instructions
before operating. Knowing all the information contained therein - in particular the
warning and safety instructions - is needed to safely operate the equipment. To protect
yourself and others against possible dangers. Ignoring the warning, safety and operating
instructions can result to a considerable shortening of the useful life of equipment. Do not
make any intervention, changes and alterations to our products. Never open the device,
otherwise any warranty and conformity expires. For questions concerning replacing the
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battery, please contact your Gutermann distributor. If you use the software and associated
mobile equipment, pay the necessary attention particularly in traffic.
1.3 Warning
The ZONESCAN Correlating Radio Noise Data Logger contains a very powerful
magnet. The operation of cardiac pacemakers and implanted defibrillators can be
influenced. People with cardiac pacemakers and implanted defibrillators are not permitted
anywhere near this product.
ZONESCAN S-Alpha does emit electromagnetic fields in operation. To protect your health,
keep a distance of at least 8 inch (20cm) from the device and its antennas. Installation of the
device has to be performed in such a way that this minimal distance is maintained under all
circumstances.
1.4 Intended Use
ZONESCAN products, hardware, software and accessories, are exclusively intended for
industrial use and exclusively intended for leak detection on water pipes of the public water
supply. In particular, these products are not intended for the use of waste water and gas
lines. Gutermann Technology GmbH is not liable for any damages caused by misuse,
improper operation, and as a result of non-compliance with safety instructions and warnings.
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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.
2.1 Main Features
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.
2.2 System Overview
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.
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Figure 1: Functionality of logger, repeater and alpha
Interactive communication between ZONESCAN NET and the leak detector
While conventional radio loggers are equipped with a simple radio transmitter, the
ZONESCAN Correlating Radio Noise Data Loggers feature a transceiver (combined
transmitter and receiver). This allows for interactive communication between the sensor
located in the chamber and the leak detector. In addition to correlation and remote listening,
programming of the ZONESCAN Correlating Radio Noise Data Loggers is also performed via
radio signal directly from the vehicle (i.e., without physical contact with the logger). Thus, the
factory settings can be easily adapted at any time by you to meet your specific measurement
needs.
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3 Leak Detection View
3.1
Leak Detection Map
3.1.1 Structure of the Screen
Note! If the alpha fails, no data can be collected by the repeater and the logger and
transmitted
Figure 2: Structure of the screen with numbers 
 to  for explanation

 Map Area
The Map Area contains a map by Google Maps with the area of the selected project. Use the
buttons located above the map to execute various functions which vary depending on 
"View" - Leak Detection or Maintenance. For an explanation of the individual functions, hold
the cursor over the button.
The buttons in the upper part of the map can be used to display and hide individual elements
of the map. Depending on  "View" - Leak Detection or Maintenance - the correlations, leak
values and custom or alpha, repeater, logger and custom fields are displayed. Changes
made here affect the view in  "List Area". By default, a legend is displayed in the lower part
of the map.
 View
In View, you can switch between Leak Detection, Maintenance and Administration. Use the
printer drop-down menu to print the screen, the map, correlated leaks or the leak values.
 Project
In the Project menu bar, the user can select the desired project via the drop-down menu. 
Measurement Period
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The measurement period can be changed in the drop-down menu. Select from 5 days, 30
days or an entire month. The current setting is displayed at the right.
 Selected Item
Use the blue arrow buttons to change between the individual values in the list area. The
current selection is displayed in the upper area.
 List Area
In List area, the user finds all data relevant for the evaluation.
 Logout Button
The user logs out with the logout button.
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3.1.2 Google Maps Area
The Google Maps Area has the regular Google Maps features such as changing the map
view to satellite and terrain (beneath the Map field)
Figure 3: Google Maps Display
Figure 4: Google Satellite Display
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Zoom all items which adjusts
the map by automatically to fit
zooming in or out to fit all
items in the window
Shows or hides the map
legends at the bottom of the
screen
Displays the logger numbers
or not – next to the colored
dots representing the
loggers
Displays the logger
noise levels in dB
(decibel) – on top of the
colored dots
Figure 5: In the top left corner all four symbols are explained in speech bubbles
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Figure 6: Zoom In/Out
The Google Maps Zoom Slider allows one to zoom in or out
Google Street View
This powerful function that Google Maps have introduced allows the user to view and walk
through the photographed 3D streets. If there is an orange Pegman present above the zoom
bar then Google Street View is available.
Follow the link for further detail about using Google Street View:
https://support.google.com/maps/?hl=en#topic=3092425
Figure 7: Google Street View
This is location dependent as not all countries, cities or towns have street view available.
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Figure 8: Google Street View Pegman (red circle)
• Hover the cursor over the orange Pegman and he will lean forward as shown above
Figure 9: Google Street View moving the Pegman (red circle)
• Click and hold the cursor on the person then drag him to a chosen location on the street
which will highlight blue to show which streets have the street view present. Simply
release the mouse button to drop him on the street
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Figure 10: Google Street View 1st person perspective
• The map changes to a photographic image of the street with the ZONESCAN Logger
plotted in in place. The street names are marked and the white arrows are used to track
forward or back through the street
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Figure 11: Google Street View 1st person perspective – cont.
• The user is able to turn 360degrees on the spot by moving the cursor left or right until a
rectangular white shadow appears, simply click the mouse to move in the chosen
direction. The top left corner has the orientation wheel and zoom function bar similar to
the normal Google Maps
Figure 12: Google Street View Guidance
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Figure 13: Google Street View Correlation Point (red circle)
An orange fuzzy spot plotted on the road represents a correlated point for further
investigation. This is a very powerful remote tool for the leakage technician to further
investigate.
3.1.3 Correlations and Logger Layer
The user may choose their correlations and logger display preferences by ticking the relevant
box within the drop-down menu as shown in the following screen shots:
Figure 14: Correlation Drop-Down Menu
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• In the window above the Probable, Possible, w/o Pipe and Out of Bracket correlations
maybe ticked to show or unticked to hide the correlation icons
Figure 15: Logger Noise Drop-Down Menu
• Shows the Logger Noise options Probable, Possible and No Leak, tick to display all the
Loggers on the map or untick to hide any of the options
Figure 16: Logger Custom Drop-Down Menu
• Allows the user to select the pipe network created using the correlation wizard or KML
(Keyhole Markup Language) layer provided by the water authority
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3.2 Correlations Table
Figure 17: Correlated Leaks
• The sorting of the tables can be changed at any time. Click the small arrow in the title field
of the value that you would like to change. In the selection box that opens, you can sort in
either alphabetical or reverse alphabetical orderThe columns can also be displayed or
hidden from the table. To do this, click the small arrow in the title field. In the selection
menu that appears, move the cursor to the Columns item. In the list that is now displayed,
you can set a check mark in the field that you would like to display or remove the check
mark from a field that you would like to hideClick the Correlated Leaks table to display all
values in the list area that you have displayed in the map
3.2.1 Table Fields
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Figure 18: Correlation Table Fields
Quality
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
Logger 1
Reference number of the first Logger that was correlated
Logger 2
Reference number of the second Logger that was correlated
Distance L1
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
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
Center Distance
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
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Pipe Length
This is the total Pipe Length between Logger 1 and Logger 2
Pipe Setup
Located in the Pipe Setup field are red, yellow or green indicators
Red indicators indicate that no pipe settings have been entered yet
and the used data were taken over from the default values
Yellow images appear if manual settings were made and not all
details are known (pipe length, diameter and material are known).
With manual settings, the course of the pipe cannot be changed,
unlike with the Pipe Wizard
Green indicators mean that all details are known for the settings
and were taken over in full from the Pipe Wizard
To enter the pipe settings, use the mouse to click the small
triangles, next to Comments, in the field that you would like to
change. In the menu that appears, select “Manual Pipe Data Entry”
if you would like to enter the data "manually" or “Start Pipe Wizard”
if the data are to be determined automatically. To delete existing
pipe data, select the “Delete Pipe Information” item
Figure 19: Entering pipe settings
3.2.2 Entering Pipe Data Manually
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Figure 20: Entering pipe settings – cont.
• Click the “Add Segment” button to enter a new pipe segment. Then complete the “Length,
Material and Diameter” fields. The sound velocity is automatically calculated from your
values and entered in the respective field. If you have more exact information on the
sound velocity in this pipe segment, you may enter it manually in this field
• To apply the settings, click the “Save” button
• An already stored entry can be removed by clicking “Remove Segment; confirm removal
by clicking “Save”
3.2.3 Entering Pipe Data with the Pipe Wizard
With the Pipe Wizard, data for the pipe settings are determined automatically via the pipe
network and entered.
• First, you are requested – if necessary – to move the Logger to the correct position. To do
this, click the Logger that you would like to move and drag it to the desired position.
Repeat the process with both Loggers until they are correctly positioned. Use “Undo” to
undo your last change
• The Logger 1 and Logger 2 fields indicate the respective, current positions of the Loggers
• Once the Loggers are correctly positioned, click “Next”
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Figure 21: Adjusting loggers
• In the next step, you have the option of changing the course of the pipeline. To do this,
click the small box in the middle of the pipe that you would like to move. With the mouse
pressed down, drag the pipe to the desired position
• You can now repeat this with the individual segments until the pipeline is correctly
positioned. Use “Undo” to undo your last change. Displayed in the Pipeline Properties box
are the current number of segments and the current pipe length
• After adjusting the course of the pipeline, click “Next”
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Figure 22: Adjusting the pipeline
• Next, you are prompted to edit the properties of the individual segments of the pipeline.
Complete the “Length, Material and Diameter” fields
Note! If the data – Length, Material and Diameter – are contained in a displayed KML
(Keyhole Markup Language) layer, it can be displayed in the map by clicking the
corresponding pipeline. The values can be taken over 1:1 from the pop-up window
that opens
• The Sound Velocity is automatically calculated from your values and entered in the
respective field. If you have more exact information on the Sound Velocity in this pipe
segment, you may enter it manually in this field
• After all fields are filled, click the “Finish” button to start the calculation. The calculated
values are stored automatically
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Figure 23: Adjusting the pipeline – Finish
Note! It is possible that the Pipe Wizard calculation cannot be performed
immediately. It depends on the complexity of the recalculations and the workload of
the server
3.2.4 Correlation Context Menu
• A context menu can be displayed for each individual, correlated leak. To do this, select
the value in the table that you would like to visualize
• Right-click to open the context menu. Here, you can select the type of graph to be
displayed. In addition, you can insert a comment
• The same menu can be opened by right-clicking a Correlation on the map
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Figure 24: Context menu for correlations
Show in Street View
The map will switch to Google Street View and automatically zoom
in on the chosen correlated point. See previous section on Google
Street View
Figure 25: Google Street View of correlated leaks
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3.2.5 Correlation Graph
Figure 26: Correlation Graph
Correlation is a mathematical method for comparing two time synchronized signals with one
another.
A leakage noise is simultaneously recorded by two sensors at different locations which are
represented by the black lines at either side of the graph if the pipe data is known. The sound
emitted by the leak spreads in the water pipe at a defined sound velocity. If the acoustic
event were to be brief and occur only once, e.g., a blow with hammer, it would be simple to
measure the arrival at both receivers. In this case, one would only need to compare the
arrival times at the two receivers with one another. If these are the same, the sound has
traveled the same distance to the receivers, i.e., the sound source lies in the middle of the
pipe between the receivers.
If the arrival times are different, it is possible to calculate the distance to the two receivers
from the measured time difference. The sound arrives at the closer sensor before the more
distant sensor.
In the context of leakage noises, the goal of the correlation measurement is primarily to
determine the propagation time difference of two signals.
Because the correlation curve also includes spectral information, it is often of interest to
define the character of the leakage noise, particularly for distinguishing noises that are not
related to the leak, provided this can be detected by means of a frequency analysis (e.g.,
electrical noise). The correlation curve can also be mathematically filtered for the purpose of
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retroactively separating such interfering noise to better identify the correlation maximum
caused by the leak.
3.2.6 Correlation Spectrum
Figure 27 Correlation Spectrum
The correlation spectrum is a combination of the signal spectra of the two sensors, which is
used for the correlation on the pipeline between the two sensors. In these common spectra, it
may be possible to identify the influence of noises not related to the leak (e.g., electrical
noise or pumps) on the correlation result (see also 3.2.4 Correlation Context Menu).
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3.2.7 Correlation Report
Choose the required options by ticking the box opposite and then click open. A new window
will open in the browser with the relevant maps and graphs associated with the chosen
correlation.
Figure 28: Correlation Report Options
Figure 29: Correlation Report – Part 1
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Figure 30: Correlation Report – Part 2
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3.3 Logger Noise Table
Displayed in the Logger Noise Table are all values that are needed for an evaluation.
Figure 31: Logger Noise Table
3.3.1 Table Fields
Leak Score
The Leak Score is specified in a range from 0 to 100. The higher
the number, the greater the probability that measurements will
actually detect a leak.
The goal of the noise measurement with Loggers is to obtain as
reliable a statement as possible regarding the presence of a leak
at a specific point of the monitored water network. For the greatest
reliability with respect to the presence of even small leaks, all
information that is indicative of a leak near a Logger should be
included. Misinterpretations should be avoided in this process.
The measurement values obtained from the histogram (see 3.2.4
Correlation Context Menu) – particularly the lowest ascertained
sound-level value dBmin – which are a strong general indicator of
a leak, are included in the subsequent processing.
In addition to the described histogram evaluation, the Leak Score
includes, above all, knowledge from the frequency response
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(spectrum). These values are used, in particular, for removing
background noise.
The frequency spectrum data enables the algorithm to differentiate
between leak noise and mechanical noises.
In addition, if there is a correlation at the same position near the
logger for more than one day, this will also increase the leak score.
The result is output as the Leak Score in a range from 0 to 100.
The settings for the display of a possible or probable leak are
made under Administration in Settings
Logger
Reference number of the displayed Logger
Location
The Location field is a text field in which the location of the Logger,
e.g., the street and street number, can be entered
Min. Noise
The smallest dB value measured during the last measurement.
Comments
Comments is a text field with entries on, e.g., permanent noise
sources
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3.3.2 Logger Noise Context Menu
A context menu can be displayed for each Logger. To do this, select the Logger in the table
that you would like to visualize. Right-click to open the context menu. Here, you can select
the type of menu that is displayed. In addition, you can insert a comment. The same menu
can be opened by right-clicking a Logger on the map.
Figure 32: Graphical choices for leak score
Show in Street View
The Map will switch to Google Street View and automatically zoom
in on the chosen logger. See section 3.1.2 Google Maps Area
Figure 33: Google Street View shows chosen logger
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Histogram
The histogram is the graphical display of a noise distribution of the
measured sound level
Figure 34: Logger Histogram
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Histogram cont.
During noise monitoring, the noise level is repeatedly measured in
intervals of a few seconds. During a one-hour measurement
period (e.g., from 2 a.m. to 3 a.m.), several hundred individual
measurement values are collected. The sound level is measured in
dB. If, for example, the sound intensity of 15 dB is measured 120
times, this sound intensity has a frequency value of 120. Other
sound intensity values are measured with a different frequency. If
all of these frequencies are plotted as y values against a scale of
the various dB sound intensities (x axis), one obtains the so-called
histogram as a frequency distribution.
This histogram is a representation of the noise distribution in the
measured period of time. The curve has a maximum, which
represents the most frequently measured noise sound intensity.
For leakage noise monitoring, the quietest noise detected in the
observed period is of particular interest. It is the smallest dB value
for which a measurement value exists. Because a leakage noise is
always present, one assumes that this value most likely
characterizes the leakage noise, while higher dB sound intensity
values arise from the addition of primarily random noise sources
(e.g., vehicle traffic).
The so-determined smallest sound intensity value, found at the left
edge of the histogram curve, is referred to as the dBmin value and
plays a key role in the evaluation of the leakage noise
Signal spectrum
The signal spectrum can be used to make a statement about a
possible leak.
Figure 36 shows a spectrum with electrical influence. If the curve
has this appearance, one can assume that no leakage noise is
present
Figure 35: Spectrum with electrical influence
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In figure 37, you see a typical spectrum of a leakage noise. It is
clearly seen that the curve differs from that of a spectrum with
electrical influence. If the graph has an appearance similar to that
shown in figure 37, one can assume a leakage noise
Figure 36: Spectrum with leakage noise
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Leak Score History
The Leak Score History visualizes the historical values from the last
30 days, 3 months, 6 months, 12 months, 2 years or full history as
long as the data is available for the time span. If the data available is
less than a chosen period then the software will adjust the window to
fit. On days with sound signal, the leak score is shown in blue,
otherwise in green. In the example below, the leak score on days with
sound signal is lower because the spectrum calculated from the
sound signal is not typical of a leak.
Figure 37: Logger Leak Score History
Min Noise History
The dBmin History visualizes the historical values from the last 30
days, 3 months, 6 months, 12 Months, 2 years or full history if data is
available
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Figure 38: Logger dBmin History
Play Noise
The actual leak noise sample can be played through the PC
speakers or headphones to help identify the type of sound
recorded by the chosen logger. To help distinguish between
background sound and leak sound compare a logger which has a
leak score of 0 (zero) and then listen to a logger with a high leak
score
• Depending on your browser, either click the Signal Spectrum
and choose the Download Sound File or press the “Play”
button.
Figure 39: Download Sound File
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