Essential Considerations for Selecting a Helium Mass Spectrometer Leak Detector — Understanding Leaks
Publishdatea：2019-12-02 Views：123
Many customers who need to purchase a helium mass spectrometer leak detector often ask about the price first when making inquiries, but we may not be able to give you an immediate answer.
The leak detection method used for a helium mass spectrometer leak detector varies depending on the workpiece being tested. Before testing a product for leaks, it is necessary to first understand the structure and manufacturing process of the workpiece, and to identify potential leak sources, in order to complete leak detection quickly, accurately, and effectively.
Leaks in new products are typically caused by imperfect connections and welds between various components during assembly. Common examples include electric welding (argon arc welding), brazing, soldering, glass/metal seals, metal/ceramic seals, O-rings and other types of sealing rings, compound (adhesive) sealed connections, and so on.
Leakage caused by defects in the container wall or by the wall being too thin belongs to another type. For example, if a specific part of a plastic bottle leaks, microscopic examination may reveal many fine cracks rather than a few small holes. Similarly, on the top of a metal can, where the sealing ring pull-tab is located, if the printed marking is too deep, the remaining metal may be too thin to prevent gas from diffusing through numerous micro-cracks into the can. These can only be detected by high-precision leak detectors.
There is also a type of leak that is neither a pore nor a crack. This involves the molecular structure arrangement of the container wall itself, which allows gas to diffuse through the wall.
Another type that cannot be distinguished from conventional leakage is "virtual leakage." This is not a true void leakage, but rather results from the release of internal gases from components or systems. It can be caused by improper welded structures, threaded connections, or press-fit sealed connections that create dead spaces, leading to virtual leakage. This type of virtual leakage often causes problems in vacuum systems.
Therefore, understanding leaks is an essential prerequisite for selecting a helium mass spectrometer leak detector.
Many customers who need to purchase a helium mass spectrometer leak detector often ask about the price first when making inquiries, but we may not be able to give you an immediate answer.
The leak detection method used for a helium mass spectrometer leak detector varies depending on the workpiece being tested. Before testing a product for leaks, it is necessary to first understand the structure and manufacturing process of the workpiece, and to identify potential leak sources, in order to complete leak detection quickly, accurately, and effectively.
Leaks in new products are typically caused by imperfect connections and welds between various components during assembly. Common examples include electric welding (argon arc welding), brazing, soldering, glass/metal seals, metal/ceramic seals, O-rings and other types of sealing rings, compound (adhesive) sealed connections, and so on.
Leakage caused by defects in the container wall or by the wall being too thin belongs to another type. For example, if a specific part of a plastic bottle leaks, microscopic examination may reveal many fine cracks rather than a few small holes. Similarly, on the top of a metal can, where the sealing ring pull-tab is located, if the printed marking is too deep, the remaining metal may be too thin to prevent gas from diffusing through numerous micro-cracks into the can. These can only be detected by high-precision leak detectors.
There is also a type of leak that is neither a pore nor a crack. This involves the molecular structure arrangement of the container wall itself, which allows gas to diffuse through the wall.
Another type that cannot be distinguished from conventional leakage is "virtual leakage." This is not a true void leakage, but rather results from the release of internal gases from components or systems. It can be caused by improper welded structures, threaded connections, or press-fit sealed connections that create dead spaces, leading to virtual leakage. This type of virtual leakage often causes problems in vacuum systems.
Therefore, understanding leaks is an essential prerequisite for selecting a helium mass spectrometer leak detector.
