ATEQ l Leak Testing Academy l Vacuum Decay Leak Testing

INTRODUCTION TO VACUUM DECAY LEAK TESTING

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WHAT IS THE VACUUM DECAY METHOD IN LEAK TESTING?

The vacuum decay leak test is a non-destructive and highly sensitive method for detecting leaks in sealed components or systems. By creating a vacuum within or around the test object and monitoring for pressure changes, this method can accurately identify even the smallest leaks. The vacuum decay leak test is widely used across industries for its precision, repeatability, and ability to maintain product integrity.

VACUUM DECAY METHOD FOR LEAK TESTING

VACUUM DECAY METHOD

The vacuum decay leak test is a gold standard for ensuring the integrity of sealed systems, offering unmatched accuracy and adaptability to diverse testing requirements.

Steps for Vacuum Decay Testing

Preparation: Place the test object in a vacuum chamber or connect it to a vacuum system.
Vacuum Creation: A vacuum is applied to the chamber or directly inside the test object to a predetermined pressure.
Stabilization Phase: Allow the system to stabilize, ensuring that pressure and temperature variations do not affect results.
Leak Measurement: Monitor the vacuum level for a specified time. Any pressure increase indicates a leak.
Analysis: Compare the measured vacuum decay to predefined thresholds to determine if the object passes or fails the test.

Example of Applications

Automotive: brake fluid reservoir, fuel system…
Medical Devices: sealed drug vial, syringe, ampoules…
Consumer Electronics: waterproof smartphone, headphones…

Benefits

High Sensitivity: Capable of detecting micro-leaks that may not be identified by other methods.
Non-Destructive: Maintains the integrity of the tested object, making it ideal for high-value or delicate components.
Versatile Applications: Suitable for various industries, including medical devices, packaging, automotive, and aerospace.
Quantifiable Results: Provides precise, measurable data for consistent quality control.
Environmental Safety: Eliminates the need for consumables like tracer gases, reducing environmental impact and operational costs.