Helium leak detection is a critical process used in engineering to identify and locate leaks in various types of systems.
Helium, being an inert gas, is safe to use and has a very low concentration in the atmosphere. Therefore, it is an ideal tracer gas for leak detection purposes. There are several methods of helium leak detection, each with its own benefits and costs.
The first method of helium leak detection is the sniffer technique, which involves the use of a probe that detects helium gas by sensing changes in ionization levels. The advantage of this method is that it is a non-invasive technique that can detect leaks quickly and accurately. However, it is limited by its inability to detect small leaks and its dependence on the skill of the operator.
The second method is the vacuum method, which involves evacuating the system being tested and introducing helium gas into it. The advantage of this method is that it can detect very small leaks, as low as 10-6 scc/s, and is very sensitive. However, the vacuum method can be time-consuming and expensive to perform.
In terms of costs, the sniffer technique is the least expensive method, while the vacuum method is the most expensive. However, the vacuum method’s high sensitivity and ability to detect very small leaks make it the method of choice for critical systems, such as those used in aerospace and nuclear industries. The accumulation and spray techniques are relatively inexpensive and are used for less critical applications.
In conclusion, helium leak detection is a critical process used in engineering to identify and locate leaks in various types of systems. There are several methods of helium leak detection, each with its own benefits and costs. The choice of method depends on the sensitivity and criticality of the system being tested, as well as the cost and time constraints. With the proper application of helium leak detection methods, engineers can ensure the safe and reliable operation of critical systems. What do you want to test ? To understand more, reach out to us on nixma.com