Leak Detection

leak detection

MSLD Leak Detector Supply & Maintenance/Repairs

Absolute vacuum services Ltd NZ supply New Mass spectrometer leak detection units and & carry out leak detector scheduled preventative maintenance and servicing. Leak detector repairs to all types of leak detection systems including new or completely refurbished units.

Supporting Major Leak Detection Brands:

  • Varian helium leak detectors.
  • Pfeiffer helium leak detectors.
  • Edwards helium leak detectors.
  • Kontikab helium leak detectors.
  • Alcatel helium leak detectors.
  • Leybold helium leak detectors.
  • Adixen helium leak detectors.
  • ESA helium leak detectors.
  • Agilent helium leak detectors.

We can also supply, service and repair MSLD Mass spectrometer leak detector units and offer spares, fittings and accessories such as:

  • Leak detector Ion sources.
  • MSLD Filament assemblies.
  • Quartz leaks, Calibrated leaks, helium leaks.
  • Helium sniffer or probes.
  • Leak detector repair kits.
  • Helium Leak detector pump servicing.
  • Helium leak detector parts.
  • Helium leak detector repair and maintenance services.

AccuTrack Ultrasonic Leak Detector

AccuTrak VPE Ultrasonic Leak Detector:
The AccuTrak VPE Ultrasonic leak detector is extremely sensitive to the ultrasonic sound of a turbulent gas leak. Using a technology called "Heterodyning" it translates the sound to a lower frequency which your ear can interpret. AccuTrak maintains the original sound characteristics making it possible to distinguish leaks from other competing background sounds.

Includes everything you need: Ultrasonic detection unit, headset, wave guide, padded hard carry case, 9V DC battery and user manual.


  • Leak Detection: Air, Vacuum, Refrigerants, Any gas.
  • Diagnose thermal expansion valves in just 5 minutes.
  • Valves: Detect - hear internal leakage in any type of valve.
  • Bearing Wear: Hear wear & lubrication problems before damage is done.
  • Steam Traps: Detect live steam loss in seconds.

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AccuTrak VPE Ultrasonic leak detector Specifications:

  • Airborne Sensor Sensitivity: -80db/V-μ Bar
  • Detection Performance: 1.5oz/yr Refrigerant
  • Ultrasound Converter type: Heterodyne
  • Airborne Frequency response: 36kHz-42kHz
  • Sensitivity Control: Continually variable slide
  • Output, Audio: 0Hz to 4KHz
  • Output, Visual: 10 Element bar graph
  • Battery Type: Standard 9 Volt alkaline
  • Run time: 80-120 hrs
  • Dimensions: 10.5cm x 61mm x 22.2 mm
  • Overall Length: 14cm
  • Weight: 138 grams

Capabilities and benefits of the AccuTrak Ultrasonic leak detector:

  • Capable of detecting a 5 psi leak out of a 0.005" (5/1000 inch) hole, 20 to 30 feet away depending on background noise.
  • Adjustable Sensitivity allows operator to quickly identify leaks from a distance and then zero inn on the exact location of the leak
  • Easily detects any gas that generated ultrasonic sound during flow - including vacuum leaks.
  • Detecting leaks equivalent to 1.5oz/year of refrigerant.
  • Not affected by wind or high concentrations of leaked gas or refrigerants.
  • The quickest, most cost effective way to find leaks.
  • Save time and money on energy use, reduce costs on product loss.
  • Non-destructive, non-invasive testing.
  • Compact with one hand operation.

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Leak Detection Service and Re-Evacuation Service

Absolute Vacuum Services your leak detection specialists carry out an onsite (He) Helium leak detection service anywhere in New Zealand with our own portable MSLD helium mass spectrometer leak detector.

Therefore using effective methods of Sniffer Leak Testing and Spray Leak Testing to quickly find leaks saving you money and product. We also carry out a re-evacuation - vacuum dehydration service and a vacuum pumping service of LN2 and cryogenics vessels.

Benefits of having your equipment Re-evacuated, vacuum tested, leak tested and vacuum leaks located by AVS:

  • Leak checking can accurately pin point extremely small leaks.
  • The quickest, most cost effective way to find leaks.
  • Find minute vacuum leaks.
  • Non destructive, non-invasive testing, minimal disruption.
  • Determine if your system or equipment is leaking or not.
  • Retain liquid nitrogen and products effectively.
  • Reduce operating costs on product loss.
  • Significant financial savings.
  • Save valuable production time and money.
  • Reduce down time, decrease energy useage.
  • Reduce system failure due to early fault detection.
  • Reduce wear and tear of vacuum pumps.
  • Reduce your carbon footprint.
  • Vacuum check inspections to check integrity of vessels.
  • Protects the environment from dangerous emissions.
  • Leak testing can be carried out with production in operation.

Mass spectrometer Vacuum Leak Testing service can be useful in many applications such as:

  • Re-evacuation of Cryogenics vessels and ISO tanks to reinstate vacuum.
  • Industrial leak testing and leak detection of Freeze dryers.
  • Vacuum chamber leaks inside and external leaks.
  • Test and re-evacuation of Liquid nitrogen dewars, Ln2 vessels and Ln2 tanks
  • Test and vacuum re-evacuation of Cryogenic banks.
  • Test and re-evacuation of TR7 dewars, MVE Lab 5 and SC412V dewars.
  • Oxygen, Argon, Liquid nitrogen vacuum insulated piping.
  • Leak detection of ISO and MVE Vessels.
  • Leak check Heat exchangers.
  • Vacuum dehydration.
  • Leak checking Vacuum ovens and vacuum furnaces.
  • Furnace door leaks.
  • Finding leaks on heat treatment plants and nitride furnaces.
  • Autoclave and e-beam welder leaks.
  • Geothermal power, Thermal evaporators and vaporizers vacuum tests.
  • Ormat vacuum testing.
  • Liquid Nitrogen Dewar repairs.
  • Distillation towers and Deodoriser leak detection.
  • Pressure vessels and Pumping system leak detection.
  • Food processing systems.
  • Vacuum jacketed pipework and vacuum system leak detection.
  • Leak detection of Cryogenic vessels and associated equipment.
  • Wessington Cryogenics vessels and ISO tankers.
  • ISOPACK super insulated vacuum storage tanks.
  • Taylor-Wharton liquid cylinders.
  • Cryo Diffusion cryogenic dewars.
  • Vacuum insulated transfer lines.
  • Vacuum coating and neon systems.
  • Vacuum seals and rollers.
  • Gas leak detection.
  • Helium leak testing.
  • Find leaks on welding seams.
  • Helium sniffing also known as sniffer leak testing.
  • Air leaks on vacuum valves.
  • Production line leak detection.
  • Pipe seam and pipe body leak detection.
  • Chamber leak detection.
  • Find the smallest vacuum and air leaks.
  • Pipe seam and flange leak detection.
  • Quality optimiazation in mold evacuation processes.
  • Evacuation of vacuum furnaces and coating chambers.