VARIAN HELIUM LEAK DETECTOR

This Helium Leak Detector, is a small portable leak detector.

This leak detector can be used for the localization of leaks, and is suitable for determining the total leak rate of test objects.

Whether a component or a system is leak-tight depends on the application it is to be used in and the leak rate that is acceptable.

A component is considered technically leak-tight if its leak rate remains below a value defined for this particular component.

Besides the determination of the total leak tightness, it is usually important to locate the leak, quickly and precisely, in order to seal it.
The practice of leak detection is to first evacuate the part which is to be tested, so that gas from the outside may enter through an existing
leak due to the pressure difference present. If only helium is brought in front of the leak (for example by using a spray gun) this helium flows
through the leak and is pumped out by the leak detector. The helium partial pressure present in the leak detector is measured by a
sector mass spectrometer and is displayed as a leak rate.

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