Transcription of Leak Detection Methods - Thomasnet
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Leak Detection Methods - Thomasnet
Leak Detection Methods : A Comparative Study of Technologies and Techniques Short version Table of Contents 1 Introduction .. 3 2 Leak testing Methods .. 3 Water immersion bubble test method .. 4 Soap solution bubble test .. 6 Pressure decay test .. 6 Vacuum decay test or Pressure rise test .. 8 Tracer gas leak testing .. 9 Sniffing .. 10 Accumulation leak testing .. 10 Vacuum chamber inside-out leak testing .. 11 Outside-in leak testing .. 11 Applications .. 12 Halogen leak detectors .. 12 Inside-out helium sniffer detectors .. 13 Outside-in helium spraying .. 14 Outside-in helium leak 15 Inside-out helium vacuum chamber leak 16 Inside-out hydrogen sniffer detectors .. 17 3 How to Choose the Test Method .. 18 4 Conclusion .. 20 1 Introduction In the refrigeration industry, components and systems must be leak tested to ensure that refrigerant leakages are below specified limits. The three basic functions of leak testing are 1) determining if there is leakage or not ( Detection ), 2) measurement of leak rate and 3) leakage location.
Jan 01, 2001 · frequent the bubbles, the bigger the leakage. Relatively small leaks are possible, but very difficult, to detect. The main limitation of this method is …
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