Please select and order
€72.72
excl. VAT
CONFIGURE NOW
Norm
ÖNORM EN ISO 6145-9
Issue date: 2011 02 15
Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 9: Saturation method (ISO 6145-9:2009)
This part of ISO 6145 is one of a series of International Standards dealing with various dynamic volumetric
methods used for the preparation of calibration gas mixtures....
Read more
Valid
Publisher:
Austrian Standards International
Format:
Digital | 18 Pages
Language:
German
| English
| Download GER/ENG
Optionally co-design standards:
ICS
This part of ISO 6145 is one of a series of International Standards dealing with various dynamic volumetric
methods used for the preparation of calibration gas mixtures. This part specifies a method for continuous
production of calibration gas mixtures containing one or more readily condensable components. 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 ± 1 %, can be obtained using this method.
Unlike the methods presented in the other parts of ISO 6145, the method described in this part does not
require accurate measurement of flow rates since flow rates do not appear in the equations for calculation of
the volume fraction.
Readily condensable gases and vapours commonly become adsorbed on surfaces, and it is therefore difficult
to prepare stable calibration gas mixtures of accurately known composition, containing such components, by
means of static methods. In addition, these calibration gas mixtures cannot be maintained under a pressure
near the saturation limit without the occurrence of condensation. The saturation method can be employed to
prepare mixtures of this type.
ÖNORM EN ISO 6145-9
2011 02 15
Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 9: Sa...
Norm
↖
Norm
ISO 6143:2001
Issue date :
2001 05 31
Gas analysis — Comparison methods for determining and checking the composition of calibration gas mixtures
Norm
ISO 16664:2004
Issue date :
2004 07 08
Gas analysis — Handling of calibration gases and gas mixtures — Guidelines
Norm
ISO 6143:2001
Issue date :
2001 05 31
Gas analysis — Comparison methods for determining and checking the composition of calibration gas mixtures
Norm
ISO 16664:2017
Issue date :
2017 05 18
Gas analysis — Handling of calibration gases and gas mixtures — Guidelines