Transcription of Leak Detection Methods
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Leak Detection Methods
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.
Jan 01, 2001 · Leak detection sensitivity is related to the testing time, the pressure transducer resolution and the volume. The most advanced systems allow for measuring pressure variation up to 70 Pa (0.010 psig) at test pressure and, depending on the volume of the units to be tested, the leak detection cycle can be as short as 30 seconds and
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