ULVAC Vietnam Representative Office

Helium Leak detector (heliot series)

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The HELIOT900 is our helium leak detector with; high speed pumping capability, user-friendly operation and guaranteed top performance in all kinds of leak testing situations.


  • High speed pumping capability:
    5L/s pumping speed for helium IN ULTRA flow mode.
  • Tablet type controller:
    Wireless remote control is standard specification.
  • Intuitive operation:
    Simple with high-definition and eye-friendly test screen.
  • Various backing pumps available:
    Oil rotary vane and dry scroll pumps in different sizes.
  • Mobile-friendly with maneuverable cart (HELIOT904_):
    Low height type is also available (HELIOT901_).
  • Ease of maintenance:
    Tool-free removal maintenance panel, easy internal access for maintenance and maintenance instructions built in.
  • Possible to detect hydrogen as well as helium gas by vacuum method.


  • Piping assemblies and separate parts.
  • Vacuum components and systems.
  • Automotive parts, air conditioning, heat exchanger parts and assemblies.
  • Packaging for food, pharmaceuticals, etc.
  • Flow and permeation rate measurement of helium and hydrogen.


TypeBase typeMobile type
Detectable gas4He, 2H2
Minimum detectable leak rate
Leak rate display range
Inlet pumping speed for(4He)[L/sec]5
Max. connecting pressure[Pa]<1200 Pa
Main pump Pumping peed[L/sec]Turbo molecular pump:31 L/sec
Fore pump:
Pumping speed(50Hz/60Hz)[L/min]
Oil rotary pump:
Dry scroll pump:
Oil rotary pump:
Dry scroll pump:
Dry scroll pump:
Weight [kg] (including floor cart))Approx. 33(Approx. 46)Approx. 37(Approx. 50)Approx. 79Approx. 74Approx. 96
Power consumption[VA]60050011006501150
Input power supply[V]100-120 or 200-240
Inlet port flangeNW25(ISO)
Startup time[min]<2
External interfaceRS232C, RS485, analog DC, digital I/O.
LanguageEnglish,Japanese,Korean,Simple Chinese,Traditional Chinese,German,Spanish,Russian
Controller unit 7inch tablet type (wireless standard: IEEE 802.11 b/g/n) (*1)
Operation rangeWiredCable length : 2m (standard), 5m (optional)
Battery lasting time[hr]3-5(*3)
Applicable standardCE, IP30CE

*1 Applicable radio law. Tablet: Telec, CE, FCC. Main unit: Telec, CE, FCC, IC, C-TICK. “Wired operation spec” that doesn’t emit radio waves is also available (tablet controller has wireless radio on/off function).
*2 May change depending on operating environment.
*3 May change depending on communication condition, brightness, volume, etc.

[Sniffer Method]

Sniffer Method
Detectable gas4He
Minimum leak rate display range[Pa・m3/sec]0.01E-8~E-50.01E-7~E-3
Flow rate[SLM]<0.03Approx. 3
Sniffing inlet portHandyprobeΦ6mm tube fitting
Tube[m]1-10 (*1)

*1 Specified length per 1m.