Helium Leak Detector & Tester is a device that uses tracer-gas leak testing method. Helium mass spectrometer leak detectors are used in production line industries such as refrigeration and air conditioning, automotive parts, carbonated beverage containers, food packages and aerosol packaging, as well as in the manufacture of steam products, gas bottles, fire extinguishers, tire valves, and numerous other products including all vacuum systems. Helium leak detection is one of the most widely used methods of nondestructive testing in use today.

Helium is used to find small leaks or possibly larger leaks in bigger volumes. The helium is used as a tracer gas and its concentration is measured. Helium is one of the smallest gas molecules and is inert. Being inert it is relatively safe to use (rather than hydrogen) and will not react with any of the materials within the part to be tested. In most helium leak testing applications, one uses a helium mass spectrometer tuned to detect helium. Helium leak testing can be generally be between one thousand and one million times more sensitive than using pressure decay techniques.

Helium Mass Spectrometer is an instrument commonly used to detect and locate small leaks. It typically uses a vacuum chamber in which a sealed container filled with helium is placed. Helium leaks out of the container, and the rate of the leak is detected by a mass spectrometer. Typically there are two types of leaks in the detection of helium as a tracer for leak detection: Residual leak, and Virtual leak.

The leak detection technique depends on the separation of helium from other gases in a vacuum. It is accomplished by ionizing a gas sample containing helium, pushing the sample through a magnetic field, and collecting the helium ions as they emerge. Since helium ions exit along a different path from all other ions, collection of helium is reasonably simple.

Applications of Helium Mass Spectrometer Leak Detector & Tester

  • Leak testing of components, subassemblies and large chambers used on semiconductor and flat panel display tools
  • Leak testing of semiconductor process equipment and flat panel tools
  • Leak testing of aerospace components, subassemblies, and systems
  • Leak testing of medical devices, such as pace makers, catheters, X-ray tubes, and MRI systems
  • Leak testing of storage vessels/storage tanks
  • Leak testing of Automobile systems such as air bag initiators, radiators and air conditioning units
  • Leak testing of industrial components, and systems