heliumvuotomittaukset

Heliumvuotomittaukset, commonly referred to as helium leak detection, is a method used to identify and quantify leaks in sealed systems. This technique is particularly valuable in industries where maintaining vacuum integrity or preventing gas escape is critical, such as in the semiconductor, aerospace, and medical device manufacturing sectors. The principle behind helium leak detection relies on helium's unique properties as a tracer gas. Helium atoms are small, inert, and readily available, making them ideal for this purpose.

The process typically involves evacuating the system to be tested to a low pressure. Subsequently, helium gas is introduced into or around the system. If a leak exists, helium atoms will diffuse through the opening and enter the evacuated system. A highly sensitive detector, often a mass spectrometer tuned to detect helium, is then used to scan the external surfaces or internal atmosphere of the system. When helium is detected, the instrument registers a signal proportional to the leak rate. This allows technicians to pinpoint the location and size of the leak, facilitating timely repairs.

Helium leak detection offers a high degree of sensitivity, capable of detecting leaks as small as 10^-12 mbar·l/s. Its non-destructive nature means that the system being tested does not suffer damage during the detection process. The speed and accuracy of helium leak detection make it an indispensable tool for ensuring the quality, safety, and performance of a wide range of products and equipment.