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DIN EN ISO 20486

2018 Edition, May 2018

Complete Document

Non-destructive testing - Leak testing - Calibration of reference leaks for gases (ISO 20486:2017)



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Active, Most Current

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ENGLISH * SAME AS ISO 20486
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Product Details:

  • Revision: 2018 Edition, May 2018
  • Published Date: May 2018
  • Status: Active, Most Current
  • Document Language: English
  • Published By: Deutsches Institut fur Normung E.V. (DIN)
  • Page Count: 39
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

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).

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.