Sealed Device Leak Testing

Your business’ product quality, warranty cost and overall reputation all depend on your ability to ensure your sealed components are sealed from contamination or leakage. CTS offers a highly accurate solution for leak testing your sealed components, allowing you to focus your valuable attention elsewhere.

Sealed Device Leak Testing is a method used to leak test components that are ‘sealed’ and do not have ports to apply pressure or vacuum to test for leaks. To test sealed devices CTS uses a hybrid leak test called Volumetric Fill.

Benefits of Sealed Device Leak Testing:

• Ensure sealed parts conform to IP67 ingress contamination
• Dry and non-destructive leak test
• Performs a gross leak test that measures for large holes
• Performs a fine leak test that measures for small leak paths
• Can be performed with air pressure or vacuum

Volumetric Fill is a form of pressure decay leak testing that uses a test chamber to create a controlled test environment to perform the leak test. The sealed device is placed in a fitted enclosure inside the chamber, the enclosure is sealed leak tight in preparation for test. The Volumetric Fill leak test monitors pressure changes inside the test chamber surrounding the device. Changes in the chamber pressure are used to measure leak rate.

The test chamber is charged to the test specification. Any change in pressure indicates air moving from the chamber into the part through the leak, this change in pressure measures a leak. If the pressure drop measurement is greater than the leak rate specification the part fails a failed leak test. If the pressure drop is less than the leak rate specification the component passes the leak test.