Helium Leak Tester Test Principle and Concept Diagram
Yamaha Helium Leak Tester Testing Mechanism
Yamaha helium (He) leak tester measure helium leakage in a vacuum chamber after the object under test has been placed in the chamber and injected with helium up to a specific pressure and then determine whether the leakage is under or above a leakage threshold.
Concept diagram for Helium leak tester (chamber method)
Features
1. Accurate detection of small levels of leakage
The precision of Yamaha's highly-reliable leak tester is 100 to 1,000 times that of tester that use the conventional bubble sensing and pressure decay methods.
Also, compared to tester that use the sniffer method, which requires time for probe operation during testing, Yamaha leak tester can provide speedy and thorough product testing.
2. Direct line system leads to shorter inspections
Yamaha's many years of FA experience have been put to use in combining direct lines and conveyor robots to save energy and speed up production.
3. Fail-safe system helps prevent mistakes
Fail-safe mechanisms such as automatic defective product separation, marking, process confirmation, and interlocks reduce operator workload and help to prevent mistakes.
4. Low running costs
The retrieval rate of the helium (He) used as a trace gas is high, at approximately 85%. With automatic management of pressure and concentration, Yamaha Helium leak tester provide both reliability and cost-efficiency.
5. Easy operation and maintenance
Yamaha leak tester feature advanced control systems that make operating them simple. In the event of a mistake or malfunction, the controller, which has a self-judgment feature, enables quick and precise recovery measures.
Reasons why helium (He) is used as a trace gas
Yamaha leak tester use the vacuum chamber method and primarily employ helium as a trace gas. The reason that helium (He) is used as a trace gas is because it has many benefits, such as those listed below.
Advantages of using helium (He) as a trace gas
- Helium is safe for people and the environment.
- Helium is non-combustible.
- Helium molecules are small and have low mass, so it is easy for them to leak from even very small holes.
- Helium gas usually only exists in the natural atmosphere and in metals in small amounts, so it is easy to tell when helium leaks from the object under test.
- Under ordinary circumstances it is difficult for helium to become liquid, so it will not block holes.
- Helium is an inert gas, so it does not cause metal to rust.
Questions about Helium Leak Tester
Please direct your questions about Helium leak tester to the following phone and fax numbers:
Phone: +81-53-467-3601 (FA Division)
FAX: +81-53-467-3613