标准编号：ISO 20486:2017
中文名称：非破坏性试验 泄漏试验 气体参考泄漏的校准
英文名称：Non-destructive testing — Leak testing — Calibration of reference leaks for gases
发布日期：2017-12
标准范围
This document 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).
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