Reference number
ISO 20486:2017
International Standard
ISO 20486:2017
Non-destructive testing — Leak testing — Calibration of reference leaks for gases
Edition 1
2017-12
Preview
ISO 20486:2017
68191
недоступно на русском языке
Опубликовано (Версия 1, 2017)

ISO 20486:2017

ISO 20486:2017
68191
Язык
Формат
CHF 151
Пересчитать швейцарские франки (CHF) в ваша валюта

Тезис

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.

Общая информация

  •  : Опубликовано
     : 2017-12
    : Рассылка краткого отчета о пересмотре [90.60]
  •  : 1
  • ISO/TC 135/SC 6
    19.100 
  • RSS обновления

Жизненный цикл

Цели в области устойчивого развития

Данный стандарт разработан для достижения следующих Цель устойчивого развития

Появились вопросы?

Ознакомьтесь с FAQ