FEATURE u Test & Measurement
SO IS THE WATER BATH THE PERFECT SOLUTION? That depends on the requirements. If it’s just a matter of checking for leaks and finding the sources of leaks, these devices are very good indeed. But of course there are limitations: Testing in water usually means I can no longer put the product on sale. In addition, the test is performed by a human tester. This places quite high demands on the personnel and may have an influence on the result. Many customers deliberately ask me for a more standardisable method. A leak test using specific test gas
and sensor technology. With the LEAK-MASTER PRO 2, we have a device that determines the leak tightness of relevant products, using CO2 sensors. Here, too, a vacuum is created in a test chamber to suck gas out of the leaking packaging. The parameters such as vacuum and measurement time are defined in advance by the customer. The test is performed automatically. At the end of the measurement, the PRO 2 displays the result by means of a rotating light signal. If the device lights up red, for example, CO2 has been detected and the product is leaking. The test is therefore completely independent of the inspector and is therefore standardised and reproducible. Of course, everything is documented digitally and the data can also be exported.
Looking at how long one of these tests take, and what size of leak it can determine, I would say the more CO2 in the packaging, the faster you can find a leak. As a rule, eight to 10 seconds are often sufficient. In principle, leaks of 10 micrometers or more can be reliably detected. In other words, exactly the microleaks that cause problems for manufacturers. A major advantage of CO2 testing is also that it is non-destructive. After testing, the leak-proof packages can be put on sale without any problems. This saves waste and costs.
www.irish-manufacturing.com Irish Manufacturing November 2021 21
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