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Superior Signal Company LLC                                       AccuTrak

®

 VPE 

User’s Manual

 © 2015 

 

10 

TIPS  ON  USE 

  If you are trying to find a leak in a tight area, use the flex tube on the front 

of the AccuTrak

®

 VPE.  You can use any length of tube (it is standard 1/4 

in.) but remember the sensitivity is slightly reduced the longer you go.   

  When  leak  testing,  use  as  much  pressure  as  permissible  for  the  system.  

Increasing  the  pressure  can  double  the  flow  through  the  same  orifice, 
therefore increasing the ultrasound created by the leak. 

  If the system permits it, spray distilled water on the suspect area.  Before 

the water runs off, scan with the AccuTrak

®

 VPE.  Water on a pressurized 

leak can increase the amount of sound created. 

 

When  searching  for  vacuum  leaks,  remember  the  majority  of  the  sound 
created by the leak is internal.  If the system seals permit, you may need to 
pressurize  the  system  with  dry  nitrogen  in  order  to  increase  the  sound  of 
the leak.

 

 

TROUBLESHOOTING  GUIDE 

Humming  sound?    Certain  electrical  products  such  as  computer  terminals 

emit  a  high  frequency  “humming”  sound.    This  is 

not  an  electrical  field 

interfering with the operation of the AccuTrak

®

 VPE, it is an actual sound that 

the  unit  is  “hearing”.    To  confirm  this  place  y

our  finger  over  the  sensor  hole 

and  the  sound  will  disappear.    In  almost  all  cases,  this  sound  is  not  severe 
enough to interfere with leak detection. 

Hissing  noise?    There  is  a  certain  amount  of  hiss  which  is  normal  for  an 
ultrasonic detector.   You should expect to hear some hissing, however if it is 
so  loud  that  you  can  not  hear  anything  else,  then  it  is  a  problem  which 
deserves attention. 

The  signal  in  the  head  set  cuts  in  and  out?      There  are  two  reasons  this 
may  happen.      First,  a  low  battery  will  cause  this  problem.    Secondly,  a  bad 
headset connector could be to blame.  If you have another headset available, 
such  as  that  from  a  portable  radio  (with  a  3.5  mm  plug),  try  it.    If  you 
determine  that  the  headset  is  defective,  contact  Superior  Signal  or  your 
wholesaler for replacement. 

Not  sure  unit  is  working?      Can  the  unit  hear  the  blink  of  your  eyes?    If  it 
can, chances are it is working fine.  The leak you are trying to hear may not be 

turbulent.  See “Calibration” if you further suspect a problem.

 

 

Содержание AccuTrak VPE

Страница 1: ...Models VPE VPE GN 3rd Generation USER S MANUAL www SuperiorSignal com Superior Signal Company LLC 2015 ...

Страница 2: ...2 Peak Hold Display the new Peak Hold function on the display allows you to find leaks and faults faster and better so you get the job done quicker and easier This great feature can be found on instruments costing several times more but it is unique for this class of instrument 3 Over Range Audio Alarm this unique new feature allows you to keep your eyes on what you are measuring rather than on yo...

Страница 3: ...ION 7 BACKGROUND NOISE 9 Methods of reducing background noise interference 9 TIPS ON USE 10 TROUBLESHOOTING GUIDE 10 OTHER APPLICATIONS 11 ELECTRICAL ARCING 11 DUCTWORK 11 PNEUMATICS AND HYDRAULICS 11 BEARINGS VALVES STEAM TRAPS MECHANICAL 11 TOUCHPROBE ACCESSORY 12 OPTIONAL SOUND GENERATOR 12 BATTERY INSTALLATION 13 CARE AND MAINTENANCE 13 CALIBRATION 13 WARRANTY 14 ...

Страница 4: ...attempt to remove or modify the GooseNeck will cause damage and void the Warranty The AccuTrak VPE is the only ultrasonic instrument specifically designed for air conditioning and refrigeration leak detection Refrigeration is a unique field that requires very high performance leak detectors It requires both vacuum and pressure leak detection at very low flow rates Ultrasonic inspection is the only...

Страница 5: ... out of a tire The sound we can hear is less than a third of the total spectrum of frequencies generated The sound in small leaks is mostly ultrasonic Humans cannot hear this because it is above the human hearing range In order for a leak to generate ultrasound the flow through the leak path must be turbulent For this to happen the velocity that a gas is moving through the leak point must be high ...

Страница 6: ...generate enough sound to be heard several feet away For a leak to happen there must be an opening in the system that carries a gas or fluid Normally these openings are not clean smooth holes but passages through cracks with many jagged edges and internal chambers Fluid or gas escaping through an orifice like this is forced into turbulence random circular like motions Inside a tube where a gas may ...

Страница 7: ...ssure created by the leak will determine its ability to be detected ultrasonically When comparing to traditional refrigerant detectors that are rated to detect 0 5 oz per year remember these instruments were tested under controlled laboratory conditions and the ability to actually locate such a small trace of gas especially in a windy outdoor environment is extremely limited It is physically impos...

Страница 8: ...noise Pressing the ON OFF button again momentarily will toggle on or off the Peak Hold function of the display together with a confirmation beep in the headphones Peak Hold can be useful to better observe the maximum strength signals being detected and help find Leaks and Faults To turn off the instrument press and hold the ON OFF button for at least two seconds until it goes off When using the in...

Страница 9: ...n the right path since the indications will increase in the direction of the leak Other Important Information Remember to turn off the instrument when you are done using it or the battery will run down When the battery becomes weak enough that performance may be reduced the instrument will provide a visual signal on the display and a beep in the headphones and then the instrument will shut off The...

Страница 10: ...nguish the difference between the two signals Practice listening to different components of your system as this will help you to identify the sound of a leak from other normal operational sounds Methods of reducing background noise interference Placing the flexible wave guide into the sensor port makes the reception of the AccuTrak more directional This shields the sensor from competing sounds ent...

Страница 11: ...mputer terminals emit a high frequency humming sound This is not an electrical field interfering with the operation of the AccuTrak VPE it is an actual sound that the unit is hearing To confirm this place your finger over the sensor hole and the sound will disappear In almost all cases this sound is not severe enough to interfere with leak detection Hissing noise There is a certain amount of hiss ...

Страница 12: ...ized duct system Pneumatics and Hydraulics Leaks are quite common in pneumatic systems controls hoses tools fittings The AccuTrak VPE can easily find the rushing sound of the leak Small hydraulic leaks can be difficult to find but the AccuTrak VPE will allow you to hear these leaks with ease When testing for hydraulic leaks use the yellow waveguide to prevent any fluid from entering the sensor Int...

Страница 13: ... is a very useful accessory to detect leaks in enclosures gaskets or seals which are not under pressure The Sound Generator has a selectable output Constant tone can be used in most situations while the Burst Tone mode is more easily identified in loud industrial environments Place the Sound Generator inside a vessel such as a walk in freezer or refrigerated trailer It emits a powerful 115dB ultra...

Страница 14: ...uTrak VPE can be cleaned with a towel using dish soap and damp cloth Remove the battery and close the door before cleaning Do not allow water to enter the unit especially the front where the sensor is located After cleaning dry the unit with a paper towel Any automotive vinyl cleaner on a piece of cloth will restore the luster The same procedure can be used on the carrying case If you plan to stor...

Страница 15: ...are at the sole discretion of Superior Signal Company LLC Maximum liability under any circumstance shall be limited to replacement of unsatisfactory product Recommendations and product information are believed to be accurate but the furnishing of it does not constitute the making of a good process warranty of Seller Superior warrants that this product conforms to the product description contained ...

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