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    Extending the range of leak detectors (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Pressure-gage calibration, mass-spectrometer leak detector measures leakage rates up to 300 times greater than its normal limit. Approach utilizes constant-volume displacement characteristic of mechanical vacuum pump. Vacuum system must be small for calibration measurement validity and reduction of outgassing.
    Keywords: MECHANICS
    Type: MFS-19411 , NASA Tech Briefs (ISSN 0145-319X); 4; 1; P. 105
    Format: text
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    NASA TECHNICAL REPORTS
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