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VTECH LEAK DETECTION . Leak DETECTION Theory and Practise Comparison among leak testing techniques Rev. 1 29 Mar. 06. VTECH_leak_detection -0- Rev. 2 23 nov. 2004. INDEX. 1. INTRODUCTION ........................................ .................................... 3. 2. LEAK 4. 3. LEAKAGE MEASUREMENT 4. 4. LEAK SIZES ........................................ ........................................ ... 4. 5. SOME USEFUL FORMULAE ........................................ .................. 6. Ideal Gas Law and Real Gases ........................................ ................................ 6. Gas Flow and Leak Rate ........................................ ........................................ . 7. Turbulent flow ........................................ ........................................ ........ 7. Laminar flow ........................................ ........................................ ........... 8. Molecular flow.

VTECH_leak_detection -4 - Rev. 1 – 29 Mar. 06 2. LEAK TYPES Different types of leak sources can be determined. 1. Leaks caused by defects in the enclosure or materials permitting gas diffusion and permeation

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