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AQUASCAN 610

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Version 1.1

6. Trouble Shooting

Fault

Cause

Solution

No Sound

Headphones

not

paired.
Headset Volume control is
too low
BT Headset not charged

Pair Headset.
Increase headset
volume control.
Charge Headset
regularly like a mobile
phone

No Display of
Correlator

Dead batteries

Charge unit

No radio
Connection to
Sensors

Low battery on Sensors

Sensors turned off

Charge sensors using
Car charger
Switch sensors on

Poor
Correlation
spectra

Poor sensor or radio
contact

Reposition the sensors
Clean  magnet  contact
area
Fit  Antenna  extension
cable

Corrupt
Display

Memory corruption

Clear memory

Radio

signal

bars  strong  full
in  one  sensor
and  1or  2  bars
in the other

Stood  next  to  1  sensor-
Air  couple  with  1  sensor
causing  interference  with
the other

Move half way between
sensors

with

the

Correlator

Correlation
doesn’t

stop

processing

Corr Settings on infinite

Change Corr Settings or
manually

stop

correlation

Centre
Correlation

Sensors on different pipes
Parallel Mains

Move sensors to same
pipe

Result is 0 or
negative

The  leak  noise  is  from  a
leaking  hydrant  which  the
sensor  is  on  or  beyond
the sensor

Fix the Hydrant
Move the sensor to
bring leak in bracket

Leak result is
out by several
meters

Incorrect Velocity- wrong
pipe material or age of
pipe

Perform a velocity check

Leak result on
a Tee section

Leak could be up the
branch of the Tee section

Move sensor to next
section of the Tee

Содержание AQUASCAN 610

Страница 1: ...AQUASCAN 610 Operating Manual JW V 1 1 ...

Страница 2: ...s 11 4 4 2 Manual filter 11 4 4 3 Notch filter 13 4 4 4 Multiple filters 13 4 5 Main Menu 14 4 5 1 Contrast 15 4 5 2 Peak Suppression 15 4 5 3 Velocity Check 16 4 5 4 Ground Microphone 19 4 5 5 Live Signals 21 4 5 6 Manage Measurements 21 4 5 7 Corr Settings 23 4 5 8 Settings 24 4 5 9 Communication 30 4 5 10 Status 31 5 Sensors 32 5 1 Positioning of Accelerometers 33 5 2 Extension Antenna 36 5 3 I...

Страница 3: ... highest precision on all pipe materials including uPVC MDPE and other plastics The Wizard assist feature makes the operation user friendly With the Advanced Spectrum Analysis ASA multi filter manual filter and onsite velocity check options the AquaScan 610 has many features for the experienced user 1 1System Components The AQUASCAN 610 consists of Cordless Correlator Two radio operated sensors Ba...

Страница 4: ...en the sensors with a measuring wheel If hydrophones are used ensure the water connections are leak free Switch the sensors on by pressing the push button on the top for 1 second until the red LED is on constant before walking half way between the sensors with the Correlator Note Both sensors LED must either flash Plastic Mode or be constant A mixed setting would falsify the measurement result Mak...

Страница 5: ...ngth is the distance between sensors A B following the path of the pipe which is not always a straight line 2 Pipe material is what the pipe is manufacture from this can often be found on network drawings maps or known by an experienced operator 3 Pipe diameter can also be found on pipe network diagrams 4 Velocity is the speed of sound along the pipe wall this is preset within the velocity tables ...

Страница 6: ... very weak or missing e g caused by an auto shut off of the transmitter the sensor s spectrum will contain a white noise distribution White noise shows as a nearly equal power distribution across all frequencies In the graph you will see the bars for the frequencies form a straight horizontal line 10 Signal level B is the sound signal strength indicated by blocks the more blocks filled in the stro...

Страница 7: ...urve displays the processed measurement data for visual evaluation and analysis of the measurement result A single peak creates a confident result whereas multiple peaks known as a Manhattan sky line is a poor result 16 Battery level indicator fills in depending on the state of charge the example currently shows 70 charge When the battery is full the indicator is filled in completely A lightening ...

Страница 8: ... the backlight on or off Memory reset Pressing while powering the unit on will display a menu with the following choices Continue Continue without deleting anything Clear Memory except saved meas Delete actual parameters and measurement Saved measurements will not be deleted Clear all memory Deletes also the saved measurements Contrast adjust While the introduction screen is visible you can change...

Страница 9: ...eters Fig 3 Pipe Material Menu Select material using or and then to move to diameter Use or to choose the diameter and to accept Enter length of pipe by increasing or decreasing the digits or then to select until the correct distance is entered Press key to return to the main screen or to Correlate Select manual to enter sound velocity instead of material and diameter however the sound velocity mu...

Страница 10: ...p the complete pipe between sensor A B Press on section 1 which will initialize the main material menu enter the pipe details as described for single material Choose section 2 and repeat the process then section 3 until the whole pipe length has been established Clear all deletes the list of sections Single Material reverts back to the material menu and allows the entry of 1 section between sensor...

Страница 11: ...e using the Bluetooth headset for the first time it is necessary to pair it with the AQ 610 refer to section 4 5 1 3 Change between sensor signal A or B with or Turn listening on off with key mute function 4 4 Filters The objective for filtering is to clean up the correlation and unmask any hidden leak Press the filter menu will appear Fig 6 Filter Menu Fig 7 Optional Multiple Filter Menu ...

Страница 12: ...4 2 Manual filter 1 Listen to the leak to determine if it is high or low frequency 2 Consider the ground material leak flow pipe material pipe diameter and type of leak to estimate frequency 3 View the frequency spectrum of A and B and see if you can find matching peaks by frequency they will not be the large peaks 4 Start by making an informed estimate at the required filter setting If you are no...

Страница 13: ...g 9 Select Lower filter Set filter manually with the cursor in the coherence spectrum graphics Select lower filter limit and press Fig 10 Select upper filter Select upper filter limit and press or press to return to lower filter limit ...

Страница 14: ...h filter on or off When selecting on you can enter the notch filter frequency Notch filter can be used for suppressing electrical mains disturbing signals that belong to a small frequency range e g nearby A C currents at 50 60 Hz As a rule 110 120V AC creates a 50Hz disturbance and 230 240V AC create a 60Hz disturbance 4 4 4 Multiple filters Fig 12 Multiple filter ...

Страница 15: ...e Q for quality to the right side as well as the filter bandwidth While the multi filter is active a correlation can be perform by pressing To deactivate the multi filter screen press then move the cursor to multi filter and press highlight off as shown in fig 13 and press Fig 13 Multiple filter on off 4 5 Main Menu Press for Main Menu Select item by using keys and confirm with Fig 14 Main Menu ...

Страница 16: ...ng the correlation result For example a secondary peak which is caused by consumption as the highest peak is the exact distance to where a household meter is turning remove this with peak suppression First move the cursor to position 1 with or Confirm with Fig 15 Peak Suppression part 1 Secondary move the cursor to position 1 with or Confirm with Fig 16 Peak Suppression part 2 ...

Страница 17: ...retic and that the specific real velocity might differ from site to site We recommend that whenever the measurement shows a leak position which is not in the middle third section of the total distance between sensors A and B the real on site sound velocity should be verified This can only be done when the pipe material to be verified is homogeneous i e is a single material and diameter For this ve...

Страница 18: ...1 Next Select outside leak Confirm with Fig 19 Velocity Check part 2 Then Select metallic or non metallic unknown pipe material Note If pipe material is metallic the measurement will be more precise if you select metallic instead of unknown Fig 20 outside Leak ...

Страница 19: ...ocity For inside leak sound source is between the sensors at a known position In case of inside leak the sound source should not be in the middle third of the pipe If the sound source is exactly in the middle of the pipe it is impossible to determine the velocity The difference when entering the information is the distance between sensor A and the known leak has to be entered as shown below Fig 22...

Страница 20: ...up between the 4 way plug on the cable and the socket of the T Bar Connect the Geophone to the correlator as shown in fig 23 by removing the cap from the binder socket on the right side of the correlator and then lining up the notch of the binder plug and socket then push and screw clockwise until hand tight Please make sure that your headset is connected to the AQ 610 and that it is in mute state...

Страница 21: ...h a Geophone Use the Geophone to surface sound and pin point on compact earth concrete and Tarmac When sounding on grass use the hand probe or a piece of plywood to act as a sounding board this will help to reduce the tickling sound caused by the blades of grass With reference to Fig 26 below when using the Geophone to pin point the leak move along the path of the pipe in regular 1ft or 300mm inte...

Страница 22: ...engths will be displayed Fig 27 Live signal window 4 5 6 Manage Measurements Load save and delete measurements Depending on the size of the measurements you can store up to 64 measurements in the internal memory Fig 28 Manage measurement 4 5 6 1 Load Measurement A list with stored measurements will appear ...

Страница 23: ...nts when you scroll up or down 4 5 6 2 Save Measurement Save a measurement to the internal memory Enter a text to identify the measurement the address is a useful name as when the file is downloaded to the viewing software the address will be printed on the report Fig 30 save Measurement Select the character by moving the cursor and press to confirm repeat this until the name is complete To delete...

Страница 24: ...rement by using the same process as load measurement Fig 31 Delete Measurement After selecting a measurement you will be asked if you want to delete the measurement After confirming with the measurement will be deleted 4 5 7 Corr Settings Fig 32 Corr Duration Press to open the next window which is shown in fig 28 ...

Страница 25: ...ange the duration of the measurement to short normal long infinite Highlight the required duration by moving the cursor and press to confirm 4 5 8 Settings The Settings Menu is shown in fig 34 and each option will be covered in this section Fig 34 Settings window ...

Страница 26: ...AQUASCAN 610 25 41 Version 1 1 ...

Страница 27: ...guage by choosing from the list shown in fig 35 and press to confirm 4 5 1 2 Units Select metric or imperial unit system Input Select method for entering numbers Number changes whole number Digit changes single digit of number switches to next digit switches to previous digit ...

Страница 28: ...5 1 3 Wizard Assist Switch wizard assisted mode on or off by pressing Follow the wizard steps to perform a correlation and example of this is shown below Fig 36 Wizard Assist Mode Fig 37 Wizard Assist Step 1 Fig 38 Wizard Assist Step 2 ...

Страница 29: ...AQUASCAN 610 28 41 Version 1 1 Fig 39 Wizard Assist Step 3 Fig 40 Wizard Assist Step 4 Fig 41 Wizard Assist result ...

Страница 30: ...set Fig 42 Bluetooth search result Fig 43 Enter passkey Select the headset by highlighting and press next enter the passkey which is normally 4 zeros or 1234 When the connection is established the sound is heard from one of the sensors if switched on or a white static noise can be heard 4 5 1 5 Connect to Headset Connects AquaScan 610 to the BT headset which was selected by Find Headset cover prev...

Страница 31: ...is feature is used to download saved measurements into the viewing software or update firmware A Bluetooth pairing must be established between the PC and AquaScan 610 by searching for Bluetooth devices in the PC BT manager The serial number of the AquaScan 610 is found and highlighted The passkey is 4 zeros 0000 and the PC will automatically assign a communication port Take note of the communicati...

Страница 32: ...Status Shows Information about the AQ 610 unit Fig 45 Status Information from top to bottom Serial number Firmware version of the main processor Firmware version of the core processor Memory state Size of MMC Multi Media Card Date and time ...

Страница 33: ...n rechargeable battery For recharging the battery the sensors have to be connected to the charging unit In off state the LED will flash during recharging As soon as the battery is fully recharged the LED will stop flashing The Sensor Battery should last 8 hours whereas the Correlator is 12 hours Charge warning When battery is almost discharged during operation mode the LED will start flashing abou...

Страница 34: ...ive difference to their performance The listen function see chapter 4 3 should always be used on sensor deployment and the sensor should be positioned so that the highest frequency noise is heard minimising the effect of electrical and mechanical noise If the chambers are deep enough to take the sensor with antenna then the lid maybe shut see fig 49 however metallic lids will attenuate the signal ...

Страница 35: ...uracy increases when the leak is in the central 3rd of the screen and not close to either sensor If the leak is close to a sensor then a long time delay is introduced which creates an error in the result By centralising the leak the time delay is very small so is the error in the result even if the incorrect pipe material is chosen Fig 51 Centralise Correlation Result If the correlation result is ...

Страница 36: ... of the sensors A in fig 53 to the branch of the T Fig 53 Correlating a T section If the correlation result is perfectly central and the distance to the leak from sensor A and B are exactly the same then this is classed as a Central Correlation which is an error caused by the sensors being fitted on separate mains See example correlation in chapter 6 fig 67 To rectify the fault move one of sensors...

Страница 37: ...erence from parked vehicles and improve line of sight Position yourself with Aquascan 610 Correlator centrally between the two sensors with best line of sight If you are correlating around a corner stand on the corner Listen to both sensors before correlating if there is a static or crackling noise this is radio interference this needs to be reduced by moving antenna to improve line of site and av...

Страница 38: ...le turns off accelerometer Blow in Hydrophone and use the listen buttons on the Main Screen to check the sound is audible Flush Tapping Connect Pressure gauge to check the pressure Connect the hydrophone with the tapping valve shut and then fully open the valve ensuring the tapping is completely open Fig 58 Sensor connected to Hydrophone ...

Страница 39: ...ophone Check the bleed has sealed see instructions below to seal Fig 60 Hydrophone with Bleed valve Sealing cleaning instructions for Hydrophone bleed Occasionally grit may become trapped in the bleed valve preventing it from fully sealing Unscrew the bleed valve using a flat blade screwdriver and inspect the mechanism for grit clean and remove any particles Note Do not clean bleed valve when the ...

Страница 40: ...AQUASCAN 610 39 41 Version 1 1 Fig 61 removed Hydrophone Bleed Valve ...

Страница 41: ...AQUASCAN 610 40 41 Version 1 1 5 Example Results Fig 62 Excellent Correlation on AC pipe Fig 63 Good Correlation on PVC pipe Fig 64 Poor Correlation on PVC pipe ...

Страница 42: ...AQUASCAN 610 41 41 Version 1 1 Fig 65 No Correlation Fig 66 Out of Bracket Correlation Fig 67 Centre Correlation ...

Страница 43: ...ry Radio signal bars strong full in one sensor and 1or 2 bars in the other Stood next to 1 sensor Air couple with 1 sensor causing interference with the other Move half way between sensors with the Correlator Correlation doesn t stop processing Corr Settings on infinite Change Corr Settings or manually stop correlation Centre Correlation Sensors on different pipes Parallel Mains Move sensors to sa...

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