The Pressure Decay test method is one of the most widely used methods and is used in many industries—including automotive and medical device. In production environments it is typically used to test for leaks in the range or 0.1 sccm and larger. This method can be used to measure out-leakage of a part by pressurizing the inside of the part. In-leakage can also be measured on sealed parts placed in a test chamber where the outside of the test part is pressurized with air using the test chamber with a regulated air source. The leak rate is measured as a drop in pressure over time as the air leaks into the test part from the chamber. Calibration of the system is achieved by introducing a calibrated leak standard into the test circuit to simulate a part leaking at or near the reject limit.

Check out the many products and customer project examples listed below that use the pressure decay leak test method.