The principle and application of helium mass spectrometer leak detector

Helium, high-purity helium

Helium mass spectrometer leak detector is a mass spectrometer that uses high-purity helium gas as the leak gas and detects helium gas using a gas analyzer for leak detection.

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It is an advanced technology for vacuum container leak detection applied both domestically and internationally. Compared with general leak detection techniques, helium mass spectrometry leak detection technology has the advantages of being fast, accurate, highly sensitive, and non-destructive.

The tracer gas of helium mass spectrometer leak detector can also be other elements. But helium is usually chosen because it has the following characteristics:

1. The content of helium in the air is extremely low, accounting for only about one in 200000, making it easy to detect;

2. Helium molecules are small, lightweight, easy to diffuse, and easier to pass through leaks than other gases;

3. Helium ions have a low charge to mass ratio and are easy to perform mass spectrometry analysis;

4. Helium is non-toxic, odorless, and has no pollution to the atmosphere.

5. Helium is an inert gas with stable chemical properties that will not corrode or damage equipment;

6. Helium is non-toxic, non condensable, and extremely difficult to hold in water.

Because helium gas has the above characteristics, the application of helium leak detection has expanded from research institutes to industrial enterprises and even individual enterprises, and can be said to have a wide range of application fields.