ISO 20486:2017 specifies the calibration of those leaks that are used for the adjustment of leak detectors for the determination of leakage rate in everyday use. One type of calibration method is a comparison with a reference leak. In this way, the leaks used for routine use become traceable to a primary standard. In other calibration methods, the value of vapour pressure was measured directly or calculated over a known volume.
The comparison procedures are preferably applicable to helium leaks, because this test gas can be selectively measured by a mass spectrometer leak detector (MSLD) (the definition of MSLD is given in ISO 20484).
Calibration by comparison (see methods A, As, B and Bs below) with known reference leaks is easily possible for leaks with reservoir and leakage rates below 10−7 Pa·m3/s.
Figure 1 gives an overview of the different recommended calibration methods.
Status: PublishedPublication date: 2017-12
Edition: 1Number of pages: 32
Technical Committee: ISO/TC 135/SC 6 Leak testing
- ICS :
- 19.100 Non-destructive testing
This standard contributes to the following Sustainable Development Goal:
Buy this standard
|std 1 145||PDF + ePub|
|std 2 145||Paper|
A standard is reviewed every 5 years
Stage: 90.60 (Under review)
Got a question?
Check out our FAQs
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)
Keep up to date with ISO
Sign up to our newsletter for the latest news, views and product information.