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Why is helium used in leak detection?

Why is helium used in leak detection?

Why use helium for leak detection? Helium is the best choice to find leaks because it is non-toxic, inert, non-condensable, non-flammable, present in the atmosphere in trace amounts (5 ppm). Due to its small atomic size, helium passes easily through leaks.

How does a helium leak detector work?

The principle of leak detector is based on a sector field mass spectrometer. Analyzed entry gasses (in this case Helium) are ionized in vacuum. Ions of helium are accelerated using added voltage and further separated in the magnetic field. The ion current is, using a special detector, turned into an electric current.

How long does a leak detection take?

Detect a leak. It’s easy to spot a leak with our leak detection tool, all it takes is 15 minutes.

How do I know if my helium tank is empty?

Listen and feel for pressure discharging from the tilt-nozzle. The tank is empty when no sound is heard or pressure is felt.

How do you test for helium?

Helium Bombing for testing hermetically sealed containers Helium bombing is achieved through forcing a leak by pressurising the device within a helium gas chamber. Typically, the chamber is first evacuated to remove barometric pressure air from round the parts and then pressurising with bottled balloon gas.

Why use helium for leak testing?

allowing it to breach pathways reliably and quickly

  • making it safe to use and it will not interact with the components being tested
  • Its limited presence in the atmosphere at less than 5ppm means instrument noise due to environmental helium is inherently low and thus incredibly accurate
  • What is a helium leak detector?

    Helium Leak Detection. A helium leak detector, also known as a Mass Spectrometer Leak Detector (MSLD), is used to locate and measure the size of leaks into or out of a system or containing device. The tracer gas, helium, is introduced to a test part that is connected to the leak detector.

    Why do you need a gas leak detection system?

    Reasons For Detecting Gas. Gas Detection is often necessary or desirable for a number of reasons.

  • Oxygen detection for worker safety. The Oxygen level in normal fresh air is approximately 21% Volume.
  • Toxic gas monitoring.
  • Duct or Tool Monitoring.
  • Other applications.
  • What is a helium leakage test?

    Helium leakage tests are performed on pipelines, storage tankages and vessels that store chemicals, crude oil, petroleum products or other liquid materials to detect small leaks in these sealed industrial containers. Corrective measures are undertaken when leaks are discovered. A helium leakage test may also be known as a helium sniff test.