Definition of helium leak detector

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Sheetak - Cooling at your Fingertip 11/24 LB

Photonics Dictionary

helium leak detector: A small mass spectrometer used to find leaks in a vacuum system by detecting the presence of helium. Using a magnetic deflection device that is permanently tuned to helium, it is capable of detecting one part helium in 10 million parts of air at a source pressure of 0.2 µm.

Excelitas Technologies Corp. - X-Cite Vitae MR 11/24

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