-
1. Pressure Decay Testing:
A common method that involves pressurizing a product and measuring the rate of pressure drop over time.
Any significant pressure drop indicates a leak.
Applications: Testing sealed containers, valves, and pipes.
-
2. Vacuum Decay Testing:
Similar to pressure decay testing but involves creating a vacuum inside the product and measuring the rate of pressure increase.
Effective for testing products with complex geometries and small leaks.
-
3. Bubble Testing:
A simple method that involves immersing the product in a liquid and pressurizing it with air or gas.
Leaks are indicated by the formation of bubbles.
Applications: Testing automotive components, medical devices, and electronic enclosures.
-
4. Mass Spectrometry Leak Detection:
A highly sensitive method that uses mass spectrometry to detect trace amounts of a tracer gas (often helium) escaping from a leak.
Ideal for detecting extremely small leaks.
Applications: Testing hermetically sealed products, such as electronic components and medical devices.
-
5. Acoustic Leak Detection:
Uses microphones to detect the sound of escaping gas or liquid.
Effective for locating leaks in large products or systems.
Applications: Testing HVAC systems, pipelines, and industrial equipment.