The application principle of high-purity helium gas in helium mass spectrometry leak detection technology:

A helium mass spectrometer leak detector is a mass spectrometer that uses helium gas as the leak detection gas and detects helium gas with a gas analyzer for leak detection. It is an advanced technology for vacuum container leak detection used both at home and abroad. 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 the helium mass spectrometer leak detector can also be other elements. However, helium is generally chosen because it has the following characteristics:

1. Helium is present in very small amounts in the air, accounting for only about one part in 200,000, and is easy to detect.

2. Helium molecules are small, light in weight, easy to diffuse, and more likely to pass through leaks than other gases.

3. Helium ions have a low charge-to-mass ratio, making them easy to conduct mass spectrometry analysis.

4. Helium is non-toxic, odorless and does not pollute the atmosphere.

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

6. Helium is non-toxic, does not condense and is difficult to dissolve in water.