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.
depends on the maximum acceptable leak rate, consistent with the reasonable working life expectation for final products, and, especially in certain countries, on rules and regulations constraints. The acceptable leak rate, depending on refrigerant type and application, usually spans from 15 g/y (0.5 oz) of refrigerant for large air
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