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2. Helium mass spectrometer - Wikipedia

   en.wikipedia.org/wiki/Helium_mass_spectrometer

   Helium is used as a tracer because it penetrates small leaks rapidly. Helium also has the properties of being non-toxic, chemically inert and present in the atmosphere only in minute quantities (5 ppm). Typically a helium leak detector will be used to measure leaks in the range of 10 −5 to 10 −12 Pa·m 3 ·s −1.

3. Tracer-gas leak testing - Wikipedia

   en.wikipedia.org/wiki/Tracer-gas_leak_testing

   A tracer-gas leak testing method is a nondestructive testing method that detects gas leaks.A variety of methods with different sensitivities exist. Tracer-gas leak testing is used in the petrochemical industry, the automotive industry, the construction industry [1] and in the manufacture of semiconductors, among other uses.

4. Helium ionization detector - Wikipedia

   en.wikipedia.org/wiki/Helium_ionization_detector

   An HID connected to a gas chromatograph (GC) has the great advantage to use helium as both the carrier gas and the ionization gas. An HID is an ion detector which uses a radioactive source, typically β-emitters, to create metastable helium species. [1] The radioactive source ionizes helium atoms by bombarding them with emissions.

5. These Editor-Approved Water-Leak Detectors Can Help ... - AOL

   www.aol.com/editor-approved-water-leak-detectors...

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6. SpaceX Polaris launch postponed after helium leak is detected

   www.aol.com/news/spacex-polaris-launch-postponed...

   A SpaceX capsule carrying four private citizens will have to wait to launch into space after a helium leak forced a launch delay until later this week at the earliest. ... $100 at Walmart. AOL ...

7. Leak detection - Wikipedia

   en.wikipedia.org/wiki/Leak_detection

   The primary purpose of leak detection systems (LDS) is to help pipeline controllers to detect and localize leaks. LDS provide alarms and display other related data to the pipeline controllers to assist decision-making. Pipeline leak detection systems can also enhance productivity and system reliability thanks to reduced downtime and inspection ...

8. Gas detector - Wikipedia

   en.wikipedia.org/wiki/Gas_detector

   A gas detector can sound an alarm to operators in the area where the leak is occurring, giving them the opportunity to leave. This type of device is important because there are many gases that can be harmful to organic life, such as humans or animals. Gas detectors can be used to detect combustible, flammable and toxic gases, and oxygen depletion.

9. Hydrogen leak testing - Wikipedia

   en.wikipedia.org/wiki/Hydrogen_leak_testing

   An audiosignal increases in proximity of a leak. Detection of leaks go down to 5x10 −7 cubic centimeters per second. [2] Compared to the helium test, hydrogen is cheaper than helium, no need for a vacuum, the instrument could be cheaper but is not as sensitive as a helium leak detector so will not find smaller leaks.