Adlema is a company that researches, develops and produces leak testing devices for the needs of the industry at global standards. In addition to advanced leak testing devices using the pressure decay method, Adlema designs and manufactures quick connectors required for leak tests.

Many of the products manufactured in different industries must have leakproof property. The leakproof property is found in all products where it is not desired for fluids to pass from inside the product to the outside or from the outside environment into the product. Even if the products are designed with leakproof property, leaking problems may be encountered due to casting, assembly and material faults during the production stages. In order to detect the errors that occur due to the nature of the production, the products must be subjected to leak tests. According to industry standards and usage area the tests can be applied by taking samples or applied to all products passing through the production line. The products tested according to the determined parameters are divided into two categories as defect-free/leaking.

The product to be tested must be sealed before the leak test. The sealing of the product can be done using the CZ Series Quick Connectors, or it can be done with the help ofas well as with specially designed automation systems. In applications with small volumes or where there is no hole to let air into the product, the products are placed inside the EP60 IP standards Leak Test Kits. In this way, the external volume of the product can be pressurized. In the second stage, the leak test method to be used must be determined. These methods can be pressure decay, helium mass spectrometry or helium sniffer.

The traditional leak test methods consist of pressure monitoring with a transmitter and monitoring forming bubbles after immersing the product in water. The new generation test methods are differential pressure decay method, flow test and helium tests.

In the leak tests using the pressure decay method, the openings of the part are sealed. This sealing process can be done with CZ Series quick connectors as well as with specially designed automation systems. After this stage, the product is pressurized with air. The test pressure, which is monitored with the differential measurement method, at 0.1 Pa accuracy, decreases in case of leakage of the product. As a result of the tests carried out with air, the leakproof property of the product for gasses and liquids is tested.

Many products are required to have leakproof property. When manufacturers invest in quality control in the leak testing area, they expect a “0” leak to be detected in leak testing devices. But there is no product with “0” leakage. Every product leaks even if the leak is very little. The important thing is that these leaks, which will occur when the product is functioning, do not disturb the operation of the product and its safety. Discarding products that leak within the tolerance range returns unnecessary financial burden to businesses. In engineering applications parts produced are measured according to tolerances in industry standards. While it is sufficient to measure a part produced by machining with a caliper, it is not meaningful to examine it under the microscope and analyze errors in the scale of nanometers. The expectation of products in impossible standards is not sustainable for both the producer and the consumer.

In addition to determining the test pressure and leakage parameters, the material and product are also critical. It is necessary to develop different approaches for metal, glass, plastic etc. materials and different applications. Leak rates are determined using theoretical and practical experimental methods as well as the industry standards.