From：Analysis and testing Encyclopedia - Industry information
Leak detection is closely related to modern industrial production, maintenance, scientific research and other fields. Traditional leak detection methods include Bubble Test and differential pressure leak detection, etc., but these methods have many limitations and deficiencies, such as poor accuracy and low efficiency. Helium Leak Test (Helium Leak Test), as an internationally recognized leak detection method with the highest accuracy, has been widely used in vacuum field. Shanghai Bodong summarized six common helium detection methods according to a large number of customers' practical applications:
1.Vacuum Test/Spraying gun (Vacuum Test: Spraying Test)
1) The leak point can be located
2) High precision
3) Low helium consumption
Vacuum leak detection method is one of the longest used leak detection methods in the industry, widely used in precision instruments, vacuum brazing, pressure vessels and other industries
2.Sniffing Test
1) The leak point can be located
2) No need to vacuum
Suction gun method is widely used in power plant leak detection, space rocket gas control system leak detection
3.Integral Vacuum Test
1) High precision
2) Measure the overall leakage
3) Easy to detect online
4) High repeatability
4.Vacuum Test (Bombing Test)
1) The specified detection method of the sealing device
2) High repeatability
5.vacuum accumulation (Integral test of enclosed parts under vacuum)
1) Easy to automate detection
2) High precision
3) High repeatability
6.Sniffing test: Integral test at atmospheric pressure
1) Easy to detect online
2) No need to vacuum
The atmospheric pressure suction gun accumulation method is widely used in the aerospace field, and the customer of Shanghai Bodong selected the helium mass spectrometry leak detector ASM 340 D for aerospace transistor leak detection.