Vivax Metrotech HL 6000 User manual

Water Leak Detection System
Metrotech™ HL 6000™ PC Correlator
Operations Manual

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Contents
1 Quick Guide 1
1.1 Quick guide for TR A / TR B amplifier-transmitters 1
1.2 Quick guide for HL 6000 PC Correlator 2
2 Operating Instructions for HL 6000 PC Correlator Transmitter 4
2.1 Controls for TR A / TR B transmitters 4
2.2 Explanation of symbols 4
2.3 Operating instructions for TR A / TR B 5
3 HL 6000 PC Correlator software 6
3.1 Correlator Display, Main Screen 6
3.1.1 Channel A and B Time Signal Display 6
3.1.2 Signal Spectrum or Coherence Display 6
3.1.3 Channel A and B Level Display 6
3.1.4 Correlation Function Display 7
3.1.5 Diagramatical Representation of Pipe 7
3.1.6 Displaying Transmitters A and B 7
3.1.7 Current Pipe Data 7
3.1.8 Start Correlation Button 7
3.1.9 Start 3D / 2D Correlation” Button 7
3.1.10 Finishing the Correlation 8
3.1.11 Changing to the Pipe Table Display 8
3.1.12 Reset Display 8
3.1.13 Playback 8
3.1.14 Automatic Frequency Analysis 9
3.1.15 Measurement Statistics 10
3.1.16 Measuring Sound Speed 11
3.1.17 Zoom In 11
3.1.18 Zoom to Pipe Length 11
3.1.19 Load Correlation 11
3.1.20 Save Correlation 11
3.1.21 Print Correlation 12
3.1.22 Help / Operating Instructions 12
3.1.23 Filter +/- 12
3.1.24 Wide Band 12
3.1.25 Coherence / Spectrum A+B 12
3.2 Pipe Table Display 13
3.2.1 Selecting the number of pipe sections 13
3.2.2 Data for the Individual Sections 14
3.2.3 Editing the Material List 15
3.2.4 Return to the Correlation Display 15
3.3 Multicorrelation Display 16

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3.4 Report Display 17
3.4.1 Load Background Picture 17
3.4.2 Satellite Map 17
3.4.3 Undo the Last Drawing Step 17
3.4.4 Delete a Drawing 18
3.4.5 Create a New Page 18
3.4.6 Select the Line Colour 18
3.4.7 Select the Fill Colour 18
3.4.8 Comment About a Measurement 18
3.4.9 Graphic Symbols 18
3.4.10 Drawing on the map 19
3.4.11 Loading Additional Symbols 19
3.4.12 Insert Text in the Drawing 19
3.4.13 Load Correlation 19
3.4.14 Save Correlation 19
3.4.15 Printing correlation 19
3.4.16 Help / Operating instructions 19
3.5 Configuration Display 20
3.5.1 Skins 20
3.5.2 2D / 3D 20
3.5.3 Change the Measurement Unit to Metric or Imperial 20
3.5.4 Reset Settings 21
3.5.5 Defining User Name 21
3.5.6 Choose a Logo for the Printout 21
4 Charging / Operation with external power 21
5 Technical Data 22
5.1 HL 6000 PC Correlator 22
5.2 TR A / TR B Transmitters 22
5.3 PAM CORR Sensors 23
6 Accessories 23

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1 Quick Guide
The HL 6000 PC Correlator uses highly developed measuring techniques and signal processing.
It has been designed to be simple to operate and to show measurement results in an informative
manner. To make the most of the equipment, however, we recommend that you read these
operating instructions carefully.
The main steps for performing a correlation are explained in the Quick Guide. A detailed
explanation follows thereafter.
1.1 Quick guide for TR A / TR B amplifier-transmitter
Function Operation
1. Put transmitter A (orange) at location 1 and
fix the sensor to the valve, rod or hydrant.
Proper contact between sensor and object is
important. Check sound with headphones.
1. Switch transmitter A on.
Align the aerial vertically and close the lid.
1. Put transmitter B (blue) at location 2 and fix
the sensor to the valve, rod or hydrant.
1. Switch transmitter B on. Align the aerial
vertically and close the lid.

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Fig 1: Setting up the correlator
1.2 Quick guide for HL 6000 PC Correlator
• Connect aConnect the delivered antenna to the socket of the E-Box
• Connect the USB E-Box to an unused USB port on your computer
• Turn on your computer and click the following icon once the system has started:
If necessary, select language in the Start screen, otherwise the program automatically advances.
Click into correlation window.
Start measuring with Start Correlation
After approx. 3 seconds the rst result of the correlation is displayed. When the result shows a
clear correlation curve (sometimes it can take a few more seconds before the display becomes
clearer), nish the correlation by clicking the Stop symbol.

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Now click the “Pipe table” symbol or the “Pipe table” tab to go to the page where the
different pipe sections can be entered. Select the number of pipe sections, pipe data and the
respective lengths here and then return to the correlation page (click tab or symbol).
You can now see the pipe sections entered underneath the correlation curve, shown
diagramatically and assigned directly to the location of the leak found.

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2 Operating Instructions for
HL 6000 PC Correlator Transmitter
2.1 Controls for TR A / TR B transmitters
Fig 2: Front panels of TR A / B transmitters
2.2 Explanation of symbols
Symbol Explanation
Headphone connection and charging socket
Sensor connection
Aerial connection
Transmitter buttons

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2.3 Operating instructions for TR A / TR B
• Positioning the transmitters
1. Put transmitter A (orange) at location 1 and fix the sensor to the valve, rod or hydrant.
2. Put transmitter B (blue) at location 2 and fix the sensor to the valve, rod or hydrant.
3. The transmitters must always be set up with the antenna pointing upwards.
( See Fig 1: Setting up the correlator)
• Transmitter on
1. Use this button to turn the transmitter on. After switching on, a message first appears
about the software version and the remaining battery capacity. This message will disap-
pear after about 3 seconds and the transmitter is then ready to use.
2. After every button push, the background illumination for the display lights up for about
1 minute and then turns itself off automatically.
3. The transmitter automatically turns itself completely off after operating for 2 hours.
• Listening to the leak noise / displaying the level
1. You can listen to the leak noise via the headphone socket on both transmitters A and B.
This means that an assessment can be made before doing the correlation and the user
can decide whether the sound picked up is due to water leaking or is due to some other
source (a pump, etc.). If necessary, the headphone volume can be adjusted using the ar-
row buttons
2. The noise level is shown on the display both as a bar and as a numerical value. This
means that you can easily compare levels at different measurement locations.

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3 HL 6000 PC Correlator Software
3.1 Correlator Display, Main Screen
1
23
2
3
4
6
7
891011 12
13
14 15 1617 18 5 26 19 20 2122 26
6
3
24
25
1
The individual elements of the screen are explained as follows. The number in front of the
heading is the reference to this picture.
3.1.1 Channel A and B Time Signal Display
If the time signal is at and more like a line, a correlation cannot be performed. Possible sources
of faults: signal interruptions, a bad contact between sensor and valve, etc.
3.1.2 Signal Spectrum or Coherence Display
Filters are also shown in this window. These can simply be set by clicking and dragging the
cursor in the window.
3.1.3 Channel A and B Level Display
The yellow and blue bar indicate if the E-Box is plugged into your PC and that the channels work
properly.

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3.1.4 Correlation Function Display
The delay time of the cursor position is shown inside the window next to the cursor (symbolised
by a red line). Left-clicking with the mouse resets the cursor (default settings to the maximum
correlation are done by the software automatically).
Right-click and drag with the mouse in this window to hide certain ranges from the correlation.
This function is called “peak suppression”.
3.1.5 Diagramatical Representation of Pipe
This diagram does not just show the pipe but also a direct reference to the position of the cursor
and hence the leak.
3.1.6 Displaying Transmitters A and B
The leak distance is shown above TR A and TR B. Both added together result in the total length
of surveyed pipe. Watching A and B also indicates radio reception from TR A and TR B.
3.1.7 Current Pipe Data
See different pipe materials in different colors including pipe parameters.
3.1.8 Start Correlation Button
You can start a correlation with this function. If no pipe data has been entered, start a so-called
“overview measurement”, as described in the Quick Guide. The advantage is to check quickly and
efciently if there is a possible leak on this pipe section.
3.1.9 Start 3D / 2D Correlation Button
With this function you can show the time constancy of a noise, just as with a data logger. In this
way, you can identify sounds that are not constant and are therefore also presumably not a leak.

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You can choose either a 2-dimensional or a 3-dimensional representation. The change can be
made in the “Conguration” menu.
3.1.10 Finishing the Correlation
Most of the functions are deactivated while a correlation is running. After nishing the
correlation, this functions will be available again.
3.1.11 Changing to the Pipe Table Display
By clicking the pipe data button (11) underneath the correlation window or choosing the
appropriate tab, you can also go to the pipe tables (see also Chapter 3.2).
3.1.12 Reset Display
This deletes all current correlation and pipe data and a new measurement process can be started.
3.1.13 Playback
If the sound data was also saved during a previous correlation this can be replayed with this
button after loading. A correlation is started at the same time and the result displayed in the
correlation window. Important: To be able to listen and re- correlate at the same time you need
a stereo sound card built into your PC. The “stereo- mix” sound le must be activated and the
loudspeaker symbol in the task bar in the “on” position.

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3.1.14 Automatic Frequency Analysis
This performs an automatic frequency analysis and analyses at which lter setting the best
correlation takes place. Ten different results are then shown.
The best result is shown in red. If you click this window, the correlation is shown in “Normal”
mode with the corresponding lter settings.
This function helps you to optimise the lter settings and to improve the correlation result. You
should, however, analyze the result very carefully to see whether it matches the actual situation.

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3.1.15 Measurement Statistics
First the curve shape for the correlation performed is analyzed and is allocated a quality factor
between 0 and 100. The higher the value, the clearer the correlation.
For low values, the button for frequency analysis (14) is shown in the statistics window because
an improvement might be possible by altering the lter settings.
Result statistics are also displayed.
With a measurement process that lasts longer, other louder noises (for example, water being
briey extracted) can affect the correlation and this will result in the cursor (and thereby the
distance to the leak) not staying constantly in one position. These values appear in the statistics
with low percentage values. This way, the function helps you to better identify the position of the
leak.

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3.1.16 Measuring Sound Speed
Measuring the “sound speed” is essential to generate an exact correlation result, especially for
unknown pipe materials and pipe characteristics (e.g. old pipes).
To measure the sound speed of the pipe, an articial leak must be created and the distance from
this leak to the transmitters must be known. A slightly opened hydrant, for example, is an articial
leak. The leak can be both within or outside the transmitters. It is recommended, however, that the
leak is produced outside the transmitters.
1. Place both sensors at suitable measuring points and open the artificial leak.
2. Start a new correlation with the “Start correlation” button (8). Finish the correlation when
you have received a suitable result.
3. Now open the “Speed measurement” dialogue by clicking button (16). Enter the correspond-
ing data in the query window.
The result is the sound speed of the pipe. Now close the articial leak and perform the correlation
again using the new data to determine the distance to the real leak.
3.1.17 Zoom In
With this function activated, the correlation curve can be enlarged in the chosen range by clicking
and dragging with the mouse in the correlation window. This is particularly useful when two
peaks are very close to one another.
3.1.18 Zoom to Pipe Length
The correlation window is automatically adjusted so that the length of the pipe lls the whole
width of the window. By pressing the button once again, the whole measurement length is
displayed again and the pipe is reduced in the middle of the measuring range.
3.1.19 Load Correlation
A saved measurement can be loaded. If sound data was saved this is also loaded at the same time.
3.1.20 Save Correlation
First you will be asked whether you would like to save the actual sounds as well. If you choose
“no”, only the correlation curve (diagram) and the report will be saved. Otherwise, the sound data
will also be stored in universal WAV format. The saved sound data can be called up at any time
again, played back and correlated once again.

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3.1.21 Print Correlation
Produces a printout of the correlation curve including a report.
If you have also produced a damage sketch, this can be printed out at the same time as well by
checking “Sketches”. The sketch will be printed out on a 2nd sheet.
The printer selected is always the printer that is dened in Windows as the “default printer”.
Please consult Windows Help if you wish to change the selected printer.
3.1.22 Help / Operating Instructions
The Operating Instructions supplied are called up in pdf-le form. You can therefore read about
the functions and operation at any time.
3.1.23 Filter +/-
When “+” is checked, only the selected range is used for the evaluation. When “-” is checked, this
range is excluded from the evaluation.
3.1.24 Wide Band
By clicking this button, the lter is fully opened to the maximum bandwidth.
3.1.25 Coherence / Spectrum A+B
Used to toggle between coherence representation and display of each sensor spectrum sent by the
transmitters.

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3.2 Pipe Table Display
3.2.1 Selecting the number of pipe sections
A maximum of ten different sections can be entered. Press the “up” arrow to increase the number
of sections. The “down” arrow reduces the number of sections.
The total length of all the pipe sections is displayed after the number of pipe sections.
The rst two sections are shown enlarged to make entry using a touchscreen PC easier.
1
2
3

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3.2.2 Data for the Individual Sections
The length can either be entered directly via the keyboard or with the two arrow buttons next to
the eld for the length. The material and diameter are selected from a drop-down list. Click the
small triangle directly next to the materials description and select the pipe material from the list.
The stored sound speed is displayed underneath. Select the “manual” box to enter the pipe’s
sound speed by hand. This is necessary if you have carried out sound speed measurements
for pipe sections and they do not match the listed speeds. In such cases you can improve the
correlation result. If this option is set to “manual”, the material and diameter can no longer be
selected.

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3.2.3 Editing the Material List
1
2
3
4
The user can add other pipe materials and sound speeds to the saved materials list, or alter the list,
as many times as they wish.
To add materials, click “+” at (1) in the left-hand part of the window. Enter a name for the
material in the following dialogue. It is advisable to clearly mark new materials (e.g. with your
town as an additional remark) so that you can distinguish them later from the standard materials.
To then add the corresponding diameters and sound speeds to the new material, press “+” at (2).
Fill in the subsequent dialogues with the corresponding values. You can measure sound speeds
using the function of the HL 6000 PC Correlator that has just been mentioned. Please also read
the chapter about this topic.
With the “Standard settings” button, you reset the pipe table back to its original state when the
equipment was delivered. CAUTION! All data that you have entered will be deleted.
Click to return to the pipe table.
3.2.4 Return to the Correlation Display
Click to return to the Correlation Display.

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3.3 Multicorrelation Display
1
2
1
3
4
This operation mode enables you to compare two or even several measurements on a pipe and
replaces a three-point correlation.
First carry out a correlation for a pipe section and save the measurement.
Now reposition one of the sensors and perform the correlation as normal.
To see whether both results agree select the multicorrelation mode.
In the upper screen the correlation from the main screen is shown as standard. If required, button
(1) will, however, also enable you to load a saved correlation.
The comparative measurement for lower screen (4) is loaded using the corresponding (1).
Before this, (2) must still be used to select the sensor that had the same position during both
measurements.
You can therefore use your rst measurement as a reference measurement and compare this with
a large number of other correlations in the same range.