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A helium mass spectrometer or helium leak detector is an instrument commonly used to detect and locate small leaks Learn about their principles, advantages, limitations, and standards to improve sealing inspection efficiency and reliability. It was initially developed in the manhattan project during world war ii to find extremely small leaks in the gas diffusion process of uranium enrichment plants

[1] it typically uses a vacuum chamber in which a sealed container filled with helium is placed This article explains four common helium mass spectrometry leak detection methods—vacuum, positive pressure, vacuum pressure, and backpressure Agilent’s range of leak detection solutions ensure the safety, security, and consistent performance of research, vacuum, and industrial process systems

Centered on proven mass spectrometer technology, our versatile platform gives you the flexibility and performance your application requires

Whether you need a production leak testing instrument or a service and maintenance tool, titan versa provides the high performance and reliable results to meet all your leak detection needs. Helium that is present in a test object is drawn into the unit (either through the test port or through the sniffer valve), isolated and detected by a mass spectrometer, and converted into an electric signal. The basic function of a leak detector and the difference between a leak detector and mass spectrometer can be explained using figure 5.6 This sketch shows the most commonly found configuration for leak detection using the helium spray method (see local leak detection) at a vacuum component

When the sprayed helium is drawn into the component through a leak it is pumped thorough the interior. The mass spectrometer detects any helium entering through leaks, providing precise leak location and quantification

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