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Seminar about Tightness Measurements and Leak Testing Methods.
The above article is too long (~1.4 MB), to install as a webpage. The loading time would be too long and nobody would read it online. The intention of this article is to give information on leak tightness problems to those who are involved, for example in design of parts, which must fulfil some leak rate specification or those involved in manufacturing leak tight parts.
The article cannot make the reader into a specialist who can practise all aspects of leakdtection. This also needs practical training. However, a better understanding of the problems involved is gained after reading it.
On this page is shown the list of contents by which the reader decides whether he wishes to buy the booklet for a small charge (Euro 45,00). If so, please send me an order by e-mail. You will get then an invoice and after payment you get the password and the download informations within 24 hours.
The article cannot make the reader into a specialist who can practise all aspects of leakdtection. This also needs practical training. However, a better understanding of the problems involved is gained after reading it.
On this page is shown the list of contents by which the reader decides whether he wishes to buy the booklet for a small charge (Euro 45,00). If so, please send me an order by e-mail. You will get then an invoice and after payment you get the password and the download informations within 24 hours.
Introduction.
Some Theory:
What is Pressure?
What is vacuum?
What is Temperature?
The Composition of Air.
What is partial Pressure?
Partial Pressures in Air.
Dalton's Law:
What is Gas?
What is Vapour Pressure?
Vapour Pressure of Water at different Temperatures.
Vapour Pressure of different Liquids at 20o C.
What is "mean free path"?
Mean free Paths of different gases.
Avogadro's Law:
Avogadro's Number:
What is a Mole?
Boyle's Law.
Charles´ Law:
Gay-Lussac`s Law:
The scale of absolute temperature:
The universal Gas Law.
Leak rates.
The practical significance of leak rate values.
Leak rates in imaginable numbers:
Leak rates at the Bubble test:
The Flow of Gases through Leaks.
Viscous Flow:
a.) Turbulent Flow:
b.) Laminar Flow:
Calculation of an example.
Viscosity of some gases
Conversion at laminar Flow of Helium Leak rate to Leak-
rates of other Gases.
Molecular Flow:
Conversion from weight leak rate to volume leak rate.
Conversion of Helium leak rate at molecular Flow to other Gases.
Transition Flow.
The Flow of Liquids in Leaks.
a.) Turbulent Flow:
b.) Laminar Flow:
The Greek Alphabet
Leak Search and Leak Measurement
Visual Methods:
The Water Bath.
The Water Pressure Test.
The Dye penetrant test.
Leak location by discolouring chemicals.
Leak search with Ammonia.
Discolouring of a burner flame.
Leak localisation by observing bubble emissions.
Test methods.
The sniffer leak localization.
Integral leak test with the sniffer probe.
Recording of leaks.
Assessment of the display.
Conclusion of the test and shutting off the equipment.
Helium-Sniffing
The limitation of the sensitivity of the Helium sniffer leak detection method.
Variants of Helium sniffer probes.
Calibrated leaks. (Reference Leaks).
Preparation for the Test
Execution of the test.
Leak localization with a Helium sniffer probe.
Estimation of the size of the leak rate.
The Hydrogen Method
Features, Methods, Applications and Basic Theory
What is the Hydrogen Method?
Why use hydrogen?
Hydrogen safety?
Hazard
Tracer gas methods for leak testing
Hydrogen Leak Detector H2000
Tracer Gas Mix.
Behaviour of the tracer gas mix.
Comparison: The Hydrogen Method vs. Air Pressure Decay.
Comparison: Hydrogen vs. Helium
Vocabulary
Detection Methods
Diffusion probing
Features of Diffusion Probing
Applications of Diffusion Probing
Some Theory:
What is Pressure?
What is vacuum?
What is Temperature?
The Composition of Air.
What is partial Pressure?
Partial Pressures in Air.
Dalton's Law:
What is Gas?
What is Vapour Pressure?
Vapour Pressure of Water at different Temperatures.
Vapour Pressure of different Liquids at 20o C.
What is "mean free path"?
Mean free Paths of different gases.
Avogadro's Law:
Avogadro's Number:
What is a Mole?
Boyle's Law.
Charles´ Law:
Gay-Lussac`s Law:
The scale of absolute temperature:
The universal Gas Law.
Leak rates.
The practical significance of leak rate values.
Leak rates in imaginable numbers:
Leak rates at the Bubble test:
The Flow of Gases through Leaks.
Viscous Flow:
a.) Turbulent Flow:
b.) Laminar Flow:
Calculation of an example.
Viscosity of some gases
Conversion at laminar Flow of Helium Leak rate to Leak-
rates of other Gases.
Molecular Flow:
Conversion from weight leak rate to volume leak rate.
Conversion of Helium leak rate at molecular Flow to other Gases.
Transition Flow.
The Flow of Liquids in Leaks.
a.) Turbulent Flow:
b.) Laminar Flow:
The Greek Alphabet
Leak Search and Leak Measurement
Visual Methods:
The Water Bath.
The Water Pressure Test.
The Dye penetrant test.
Leak location by discolouring chemicals.
Leak search with Ammonia.
Discolouring of a burner flame.
Leak localisation by observing bubble emissions.
Test methods.
The sniffer leak localization.
Integral leak test with the sniffer probe.
Recording of leaks.
Assessment of the display.
Conclusion of the test and shutting off the equipment.
Helium-Sniffing
The limitation of the sensitivity of the Helium sniffer leak detection method.
Variants of Helium sniffer probes.
Calibrated leaks. (Reference Leaks).
Preparation for the Test
Execution of the test.
Leak localization with a Helium sniffer probe.
Estimation of the size of the leak rate.
The Hydrogen Method
Features, Methods, Applications and Basic Theory
What is the Hydrogen Method?
Why use hydrogen?
Hydrogen safety?
Hazard
Tracer gas methods for leak testing
Hydrogen Leak Detector H2000
Tracer Gas Mix.
Behaviour of the tracer gas mix.
Comparison: The Hydrogen Method vs. Air Pressure Decay.
Comparison: Hydrogen vs. Helium
Vocabulary
Detection Methods
Diffusion probing
Features of Diffusion Probing
Applications of Diffusion Probing
Page 1
Introduction to the Gas Laws
Introduction to the Gas Laws
Page 1
Introduction to the Gas Laws
Introduction to the Gas Laws
Page 2
Introduction to the Gas Laws
Introduction to the Gas Laws
Page 2
Introduction to the Gas Laws
Introduction to the Gas Laws
Page 3
The Flow of Gases in Leaks
The Flow of Gases in Leaks
Page 3
The Flow of Gases in Leaks
The Flow of Gases in Leaks
Page 4
The Flow of Gases in Leaks
The Flow of Gases in Leaks
Page 4
The Flow of Gases in Leaks
The Flow of Gases in Leaks
Page 5
The Flow of Gases in Leaks
The Flow of Gases in Leaks
Page 5
The Flow of Gases in Leaks
The Flow of Gases in Leaks
Page 6
Connections to other Leak Test Adresses
Connections to other Leak Test Adresses
Page 6
Connections to other Leak Test Adresses
Connections to other Leak Test Adresses
Page 7
Helium Leak Test on Heat Exchangers
Helium Leak Test on Heat Exchangers
Page 7
Helium Leak Test on Heat Exchangers
Helium Leak Test on Heat Exchangers
Page 9
Leak Detection with Tracer Gas Methods
Leak Detection with Tracer Gas Methods
Page 9
Leak Detection with Tracer Gas Methods
Leak Detection with Tracer Gas Methods
Page 10
Leak Test with Laser Beam
Leak Test with Laser Beam
Page 10
Leak Test with Laser Beam
Leak Test with Laser Beam
Page 11
The Download Page
The Download Page
Page 11
The Download Page
The Download Page
Page 12
Literature
Literature
Page 12
Literature
Literature
Page 8
Leak Detection and
Measuring Methods
Leak Detection and
Measuring Methods
Page 8
Leak Detection and
Measuring Methods
Leak Detection and
Measuring Methods
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