In order to ensure the leak tightness of components during or at the end of production, the DIN EN 1779 standard prescribes various test methods. The choice depends on the leakage rate to be achieved. If the values of this dimension are very small, the proof of leak tightness is carried out with a tracer fluid such as helium. Frequently used test methods of this type, in accordance with DIN EN 1779 are (mentioned are the leakage rates which can be reliably implemented in series production):
With helium leak tests, detection limits of up to 10-9 mbar · l/s can be achieved under ideal conditions.
WIKA uses systems it has developed in-house for leak testing both in series production and in the test laboratories. Customers can take advantage of this long-standing expertise in two ways: