Helium Leak Testers are used to measure fine leaks.

Helium is utilized as the test medium along with a detector to sense any presence of the gas. Presence of the gas in a known concentration equates to a leak value.

A concentration of helium is typically filled in the cavity of the Device Under Test (DUT). The amount of helium which escapes through the DUT is sensed by means of a helium detector.

The following techniques are deployed for cycle time improvement:

• Dual stage vacuum to evacuate the Device Under Test and the test chamber prior to filling with Helium resulting in improved cycle times.
• Measurement of pressure differential between the helium pressurized Device Under Test and the test chamber under vacuum

ATS Test offers a superior solution for decay style leak testing. Component selection as well as system and tooling design are essential elements and ATS has the experience and expertise required.

Pressurize, Stabilize and Test are classic test parameters for a pressure/vacuum decay test. Signature Analysis Tools used during first 250 milliseconds can provide predictive results with a high degree of confidence for demanding cycle times.

A Custom Leak Test Manifold Integrated directly into the leak Test Nest will provide a low test volume design with a thermally stable plastic to provide a more repeatable and reliable test.

Custom and high risk test Seals are part of ATS’s advantage. This over molded assembly was developed for leak test sealing of 6 individual print head die in a 10mmX10mm area.