Description: The following report is split into four parts describing the usage of a vacuum probe for leak hunting with the Helium Leak Detector, the two types of Standard Leaks that were designed to measure the sensitivity of the detector, the development of a needle valve adjusted for controlling the flow of a standard mixture of helium and air into the leak detector for a sensitivity check by the single leak method, and a worm and gear adjustment developed to facilitate throttling of the Helium Leak Detector on a vacuum header equipped with the 3/8" Kerotect angle valve.
Date: August 1945
Creator: Samuel, A. J.
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Partner: UNT Libraries Government Documents Department