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Inficon Accumulation Leak Detector LDS3000 AQ

Vendor: Inficon

LDS3000 AQ is the first leak detector to use forming gas or helium in a simple accumulation chamber.

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The new leak detector uses cost efficient forming gas or helium for accumulation leak testing. The LDS3000 AQ is very sensitive and can detect leaks down to the 10-5 mbar∙l/s range.

It will detect fluid leaks as reliably as helium vacuum leak testing, but with cost nearly at the cost of air testing. The real differentiator: The new leak detector uses the cost efficient forming gas or helium for accumulation leak testing.


  • Cost efficient solution to leak test parts
  • Testing as reliable as vacuum chamber - at nearly the cost of air testing
  • Ready for the future with fieldbus interfaces for the Industry 4.0 integration
  • Temperature and humidty indipendency offers reliable test results with high repeteability


  • Very sensitive by detecting leaks down to 10-5 mbar l/s for both gases
  • Communicative diversity through a wide range of analog and digital interfaces
  • Unique accumulation leak detector for forming gas and helium

Typical Applications

  • Leak detection for room air conditioner components, refrigeration components or heating components
  • Manufacturers of automotive gas lines, small heater coils, etc. that are now demanding greater leak tightness
  • Leak detection involving warm, humid or large parts, where the pressure decay method is ineffective
  • Other markets where helium vacuum leak detection has been considered too costly or complex


TypeAccumulation Leak Detector LDS3000 AQ
Measurement range  5 Dekaden
Dimensions (LxWxH)                                 330 x 240 x 280
Time constant of the leak rate signals  <1
recorder output lin/log  0 - 10V
Test chamber pressure  1 atm (Atmosphäre/Normaldruck)
Run up timemin  <3
Status / Trigger outputs  8 x Relaiskontakte (max. 60V DC / 25V AC / 1A)
Control inputs  SPS Kompatibel (max.35V)
Minimum detectable leak ratembar•L/s  1E-5