Transcription of VTECH LEAK DETECTION - vtechonline.com
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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 .. 9. Transitional flow .. 10. Gas 11. Laminar flow .. 11. Molecular flow .. 11. Conversion from Mass Leak Rate to Volume Leak Rate .. 11. Diffusion of Gases .. 12. Permeation .. 12. 6. LEAK TESTING IN REFRIGERATION INDUSTRY .. 13. 7. LEAK TESTING 13. Ultrasonic Leak 15. Water Immersion Bubble Test Method .. 15. Soap Solution Bubble Test .. 17. Pressure Decay Test .. 17. Vacuum Decay Test or Pressure Rise 19. Tracer Gas Leak Testing .. 21. Sniffing .. 22. Accumulation leak 22. Vacuum chamber inside-out leak testing .. 23. Outside-in leak testing .. 23. Halogen leak detectors .. 24. Inside-out helium sniffer 24.
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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Leak DetectionLeak Detection Systems. Tank, Detection, DETECTION AND ESTIMATION OF REDUCING, DETECTION AND ESTIMATION OF REDUCING SUGARS, Gamma and X-Ray Detection, Shunt Detection and Quantification, Leak Detection Methods, THE DETECTION OF FOREIGN BRIBERY, OECD, BLDC Motor Control with Sensorless Back