Helium Leak Detector

LDS3000 AQ

Accumulation Leak Detector - ULTRATEST Technology™


Product configurator

Gemini™ MxG5xx

Sensor version
Ionization chamber
Emmision current
Flange connection to vacuum chamber
Switching function
Electrical connection
Digital interface
Analog output signal
Your configuration
Gemini™ MxG5xx
Switching functions
Electrical Connection
FCC, 8-pin
Digital Interface
Measurement range
1.2 - 8.68 V
Personal information
Gemini™ MxG5xx
Gemini™ MAG500
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LDS3000 AQ is the first leak detector to use forming gas or helium in a simple accumulation chamber.
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.

The LDS3000 AQ is a product variation of the proven LDS3000 system vacuum leak detector and uses the same user interface and also offers the newest fieldbus interfaces.


  • 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


  • 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

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


Measurement rangedecades5
Dimensions (LxWxH)mm
272 x 130 x 272
10,7 x 5,1 x 10,7
Time constant of the leak rate signals<1
recorder output lin/log 0 - 10V
Test chamber pressureAtm1
Run up timemin<3
Status / Trigger outputs 8 x relaiscontacts (max. 60V DC / 25V AC / 1A)
Control inputs SPS compatible (max.35V)
Minimum detectable leak ratembar•L/s1.00E-06
Part Number
560-310I/O 1000 module
560-315BM1000 Profibus module
560-316BM1000 PROFINET IO module
560-317BM1000 DeviceNet module
560-318BM1000 Ethernet/IP module
560-320CU1000 Control unit (additionall 1 data cable needed)
560-332Data Cable 2 m
560-335Data Cable 5 m
560-340Data Cable 10 m
560-600ULTRATEST LDS3000 AQ, accumulation LD
560-320CU1000 Control unit (additionall 1 data cable needed)
560-324DIN Rail Power supply 24v, 10A
560-630Diaphragm pump LDS AQ