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Norm
ÖNORM EN ISO 6145-8
Issue date: 2008 11 01
Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 8: Diffusion method (ISO 6145-8:2005)
This part of ISO 6145 specifies a dynamic method using diffusion for the preparation of calibration gas
mixtures containing component mole fractions ranging from 10-9 to...
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Publisher:
Austrian Standards International
Format:
Digital | 24 Pages
Language:
German
| English
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Optionally co-design standards:
ICS
This part of ISO 6145 specifies a dynamic method using diffusion for the preparation of calibration gas
mixtures containing component mole fractions ranging from 10-9 to 10-3. A relative expanded uncertainty of
measurement, U, obtained by multiplying the relative combined standard uncertainty by a coverage factor
k = 2, of not greater than ± 2 % can be achieved by using this method.
By keeping the path between the diffusion source and place of use as short as possible, the method can be
applied for the generation of low-concentration calibration gases of organic components that are liquid at room
temperature, with boiling points ranging from about 40 °C to 160 °C.
This part of ISO 6145 is applicable not only for the generation of calibration gas mixtures of a wide range of
hydrocarbons at ambient and indoor air concentration levels, but also for the generation of low-concentration
gas mixtures of water.
ÖNORM EN ISO 6145-8
2008 11 01
Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 8: Di...
Norm
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Norm
ISO 6145-7:2009
Issue date :
2009 03 18
Gas analysis — Preparation of calibration gas mixtures using dynamic volumetric methods — Part 7: Thermal mass-flow controllers
Norm
ISO 6145-7:2018
Issue date :
2018 11 27
Gas analysis — Preparation of calibration gas mixtures using dynamic methods — Part 7: Thermal mass-flow controllers
Norm
ISO 6145-8:2005
Issue date :
2005 02 08
Gas analysis — Preparation of calibration gas mixtures using dynamic volumetric methods — Part 8: Diffusion method