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ISO 6145-6:2017

Current
Current

The latest, up-to-date edition.

Gas analysis — Preparation of calibration gas mixtures using dynamic methods — Part 6: Critical flow orifices
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Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

07-11-2017

ISO 6145-6:2017 specifies a method for the dynamic preparation of calibration gas mixtures containing at least two gases (usually one of them is a complementary gas) from pure gases or gas pre-mixtures using critical flow orifices systems.

The method applies principally to the preparation of mixtures of non-reactive gases that do not react with any of the materials forming the gas circuit inside the critical flow orifices system or auxiliary equipment. It has the merit of allowing multi-component mixtures to be prepared as readily as binary mixtures if an appropriate number of critical flow orifices are used.

By selecting appropriate combinations of critical flow orifices, a dilution ratio of 1 × 104 is achievable.

Although it is more particularly applicable to the preparation of gas mixtures at atmospheric pressure, the method also offers the possibility of preparing calibration gas mixtures at pressures greater than atmospheric. The upstream pressure will need to be at least two times higher than downstream pressure.

The range of flow rates covered by this document extends from 1 ml/min to 10 l/min.

DevelopmentNote
Supersedes ISO/DIS 6145-6. (07/2017)
DocumentType
Standard
Pages
27
PublisherName
International Organization for Standardization
Status
Current
Supersedes

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BS EN 50054:1999 Electrical apparatus for the detection and measurement of combustible gases. General requirements and test methods
BS ISO 14965:2000 Ambient air. Determination of total non-methane organic compounds. Cryogenic preconcentration and direct flame ionization detection method
DIN EN ISO 17621 E : 2015 WORKPLACE ATMOSPHERES - SHORT TERM DETECTOR TUBE MEASUREMENT SYSTEMS - REQUIREMENTS AND TEST METHODS (ISO 17621:2015)
DIN EN ISO 6145-1:2008-11 GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC VOLUMETRIC METHODS - PART 1: METHODS OF CALIBRATION
I.S. EN 61779-1:2003 ELECTRICAL APPARATUS FOR THE DETECTION AND MEASUREMENT OF FLAMMABLE GASES - PART 1: GENERAL REQUIREMENTS AND TEST METHODS
DIN EN 14212 E : 2012 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF SULPHUR DIOXIDE BY ULTRAVIOLET FLUORESCENCE
BS EN 13528-3:2003 Ambient air quality. Diffusive samplers for the determination of concentrations of gases and vapours. Requirements and test methods Guide to selection, use and maintenance
BS EN ISO 14111:1999 Natural gas. Guidelines to traceability in analysis
BS EN 1231:1997 Workplace atmospheres. Short term detector tube measurement systems. Requirements and test methods
I.S. EN 838:2010 WORKPLACE EXPOSURE - PROCEDURES FOR MEASURING GASES AND VAPOURS USING DIFFUSIVE SAMPLERS - REQUIREMENTS AND TEST METHODS
EN 1231:1996 Workplace atmospheres - Short term detector tube measurement systems - Requirements and test methods
EN 1076:2009 Workplace exposure - Procedures for measuring gases and vapours using pumped samplers - Requirements and test methods
EN 13528-3:2003 Ambient air quality - Diffusive samplers for the determination of concentrations of gases and vapours - Requirements and test methods - Part 3: Guide to selection, use and maintenance
EN 50054:1998 Electrical apparatus for the detection and measurement of combustible gases - General requirements and test methods
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DIN EN 14211:2012-11 Ambient air - Standard method for the measurement of the concentration of nitrogen dioxide and nitrogen monoxide by chemiluminescence
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DIN EN 14626:2012-12 Ambient air - Standard method for the measurement of the concentration of carbon monoxide by non-dispersive infrared spectroscopy
BS EN 14211:2012 Ambient air. Standard method for the measurement of the concentration of nitrogen dioxide and nitrogen monoxide by chemiluminescence
UNE-EN 14662-3:2016 Ambient air - Standard method for the measurement of benzene concentrations - Part 3: Automated pumped sampling with in situ gas chromatography
IEC 61779-1:1998 Electrical apparatus for the detection and measurement of flammable gases - Part 1: General requirements and test methods
I.S. EN 14211:2012 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF NITROGEN DIOXIDE AND NITROGEN MONOXIDE BY CHEMILUMINESCENCE
I.S. EN 14625:2012 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF OZONE BY ULTRAVIOLET PHOTOMETRY
I.S. EN 14626:2012 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF CARBON MONOXIDE BY NON-DISPERSIVE INFRARED SPECTROSCOPY
I.S. EN 14212:2012 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF SULPHUR DIOXIDE BY ULTRAVIOLET FLUORESCENCE
I.S. EN 14042:2003 WORKPLACE ATMOSPHERES - GUIDE FOR THE APPLICATION AND USE OF PROCEDURES FOR THE ASSESSMENT OF EXPOSURE TO CHEMICAL AND BIOLOGICAL AGENTS
I.S. EN 14662-3:2015 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF BENZENE CONCENTRATIONS - PART 3: AUTOMATED PUMPED SAMPLING WITH IN SITU GAS CHROMATOGRAPHY
VDI 2100 Blatt 3:2011-10 Determination of gaseous compounds in ambient air - Determination of indoor air pollutants - Gas chromatographic determination of organic compounds - Active sampling by accumulation on adsorbents - Thermal desorption
VDE 0400-40-1 : 2000 AMD 1 2004 SPECIFICATION FOR OPEN PATH APPARATUS FOR THE DETECTION OF COMBUSTIBLE OR TOXIC GASES AND VAPOURS - PART 1: GENERAL REQUIREMENTS AND TEST METHODS
DIN EN 61779-1 : 2001 AMD 11 2004 ELECTRICAL APPARATUS FOR THE DETECTION AND MEASUREMENT OF FLAMMABLE GASES - PART 1: GENERAL REQUIREMENTS AND TEST METHODS
10/30210756 DC : 0 BS EN 14626 - AMBIENT AIR QUALITY - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF CARBON MONOXIDE BY NONDISPERSIVE INFRARED SPECTROSCOPY
PREN 14626 : DRAFT 2010 AMBIENT AIR QUALITY - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF CARBON MONOXIDE BY NONDISPERSIVE INFRARED SPECTROSCOPY
13/30272419 DC : 0 BS EN 14662-3 - AMBIENT AIR QUALITY - STANDARD METHOD FOR THE MEASUREMENT OF BENZENE CONCENTRATIONS - PART 3: AUTOMATED PUMPED SAMPLING WITH IN SITU GAS CHROMATOGRAPHY
BS ISO 6145-8 : 2005 GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC VOLUMETRIC METHODS - PART 8: DIFFUSION METHOD
08/30172873 DC : DRAFT JULY 2008 BS EN 838 - WORKPLACE EXPOSURE - PROCEDURES FOR MEASURING GASES AND VAPOURS USING DIFFUSIVE SAMPLERS - REQUIREMENTS AND TEST METHODS
I.S. EN ISO 6145-8:2008 GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC VOLUMETRIC METHODS - PART 8: DIFFUSION METHOD
PREN 14212 : DRAFT 2010 AMBIENT AIR QUALITY - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF SULPHUR DIOXIDE BY ULTRAVIOLET FLUORESCENCE
UNE-EN ISO 17621:2016 Workplace atmospheres - Short term detector tube measurement systems - Requirements and test methods (ISO 17621:2015)
BS EN 50241-1:1999 Specification for open path apparatus for the detection of combustible or toxic gases and vapours General requirements and test methods
04/30112677 DC : 0 IEC 61779-1 ED.2 - ELECTRICAL APPARATUS FOR THE DETECTION AND MEASUREMENT OF FLAMMABLE GASES - PART 1: GENERAL REQUIREMENTS AND TEST METHODS
DIN EN ISO 17621:2015-12 WORKPLACE ATMOSPHERES - SHORT TERM DETECTOR TUBE MEASUREMENT SYSTEMS - REQUIREMENTS AND TEST METHODS (ISO 17621:2015)
BS EN 60079-29-1:2007 Explosive atmospheres Gas detectors. Performance requirements of detectors for flammable gases
I.S. EN ISO 17621:2015 WORKPLACE ATMOSPHERES - SHORT TERM DETECTOR TUBE MEASUREMENT SYSTEMS - REQUIREMENTS AND TEST METHODS (ISO 17621:2015)
ISO/TS 14167:2003 Gas analysis General quality assurance aspects in the use of calibration gas mixtures - Guidelines
DIN EN 14625 E : 2012 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF OZONE BY ULTRAVIOLET PHOTOMETRY
DIN EN 14626 E : 2012 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF CARBON MONOXIDE BY NON-DISPERSIVE INFRARED SPECTROSCOPY
DIN EN 14212:2012-11 Ambient air - Standard method for the measurement of the concentration of sulphur dioxide by ultraviolet fluorescence
BS EN 1076:2009 Workplace exposure. Procedures for measuring gases and vapours using pumped samplers. Requirements and test methods
ISO 6145-1:2003 Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 1: Methods of calibration
EN 14662-3:2015 Ambient air - Standard method for the measurement of benzene concentrations - Part 3: Automated pumped sampling with in situ gas chromatography
UNI EN 14625 : 2012 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF OZONE BY ULTRAVIOLET PHOTOMETRY
UNI EN 14626 : 2012 AMBIENT AIR QUALITY - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF CARBON MONOXIDE BY NONDISPERSIVE INFRARED SPECTROSCOPY
EN 50241-1 : 99 AMD 1 2004 SPECIFICATION FOR OPEN PATH APPARATUS FOR THE DETECTION OF COMBUSTIBLE OR TOXIC GASES AND VAPOURS - PART 1: GENERAL REQUIREMENTS AND TEST METHODS
UNI EN 14211 : 2012 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF NITROGEN DIOXIDE AND NITROGEN MONOXIDE BY CHEMILUMINESCENCE
UNI EN 838 : 2010 WORKPLACE EXPOSURE - PROCEDURES FOR MEASURING GASES AND VAPOURS USING DIFFUSIVE SAMPLERS - REQUIREMENTS AND TEST METHODS
17/30321967 DC : 0 BS ISO/IEC 20435-1 - WORKPLACE ATMOSPHERES - PART 1: GAS DETECTORS - PERFORMANCE REQUIREMENTS OF DETECTORS FOR TOXIC GASES
17/30345272 DC : 0 BS ISO 14167 - GAS ANALYSIS - GENERAL QUALITY ASPECTS AND METROLOGICAL TRACEABILITY OF CALIBRATION GAS MIXTURES
DIN EN 50241-1 : 2000 AMD 1 2004 SPECIFICATION FOR OPEN PATH APPARATUS FOR THE DETECTION OF COMBUSTIBLE OR TOXIC GASES AND VAPOURS - PART 1: GENERAL REQUIREMENTS AND TEST METHODS
BS EN ISO 17621:2015 Workplace atmospheres. Short term detector tube measurement systems. Requirements and test methods
DIN EN ISO 6145-8:2008-11 GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC VOLUMETRIC METHODS - PART 8: DIFFUSION METHOD
NF EN 61779-1 : 2005 AMD 11 2005 ELECTRICAL APPARATUS FOR THE DETECTION AND MEASUREMENT OF FLAMMABLE GASES - PART 1: GENERAL REQUIREMENTS AND TEST METHODS
BS EN ISO 6145-1:2008 Gas analysis. Preparation of calibration gas mixtures using dynamic volumetric methods Methods of calibration
ISO 14965:2000 Air quality — Determination of total non-methane organic compounds — Cryogenic preconcentration and direct flame ionization detection method
DIN EN 838:2010-05 Workplace exposure - Procedures for measuring gases and vapours using diffusive samplers - Requirements and test methods
BS EN ISO 16017-1:2001 Indoor, ambient and workplace air. Sampling and analysis of volatile organic compounds by sorbent tube/thermal desorption/capillary gas chromatography Pumped sampling
BS EN 14042:2003 Workplace atmospheres. Guide for the application and use of procedures for the assessment of exposure to chemical and biological agents
UNE-EN 14626:2013 Ambient air - Standard method for the measurement of the concentration of carbon monoxide by non-dispersive infrared spectroscopy
BS EN 14662-3:2015 Ambient air. Standard method for the measurement of benzene concentrations Automated pumped sampling with in situ gas chromatography
UNE-EN 14625:2013 Ambient air - Standard method for the measurement of the concentration of ozone by ultraviolet photometry
ISO 6145-8:2005 Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 8: Diffusion method
ISO 16017-1:2000 Indoor, ambient and workplace air — Sampling and analysis of volatile organic compounds by sorbent tube/thermal desorption/capillary gas chromatography — Part 1: Pumped sampling
BS EN 14625:2012 Ambient air. Standard method for the measurement of the concentration of ozone by ultraviolet photometry
ISO 17621:2015 Workplace atmospheres Short term detector tube measurement systems Requirements and test methods
UNE-EN 14211:2013 Ambient air - Standard method for the measurement of the concentration of nitrogen dioxide and nitrogen monoxide by chemiluminescence
BS EN ISO 16017-2:2003 Indoor, ambient and workplace air. Sampling and analysis of volatile organic compounds by sorbent tube/thermal desorption/capillary gas chromatography Diffusive sampling
BS EN 838:2010 Workplace exposure. Procedures for measuring gases and vapours using diffusive samplers. Requirements and test methods
UNE-EN 14212:2013 Ambient air - Standard method for the measurement of the concentration of sulphur dioxide by ultraviolet fluorescence
I.S. EN 1076:2009 WORKPLACE EXPOSURE - PROCEDURES FOR MEASURING GASES AND VAPOURS USING PUMPED SAMPLERS - REQUIREMENTS AND TEST METHODS
EN ISO 6145-1:2008 Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 1: Methods of calibration (ISO 6145-1:2003)
EN ISO 16017-2:2003 Indoor, ambient and workplace air - Sampling and analysis of volatile organic compounds by sorbent tube/thermal desorption/capillary gas chromatography - Part 2: Diffusive sampling (ISO 16017-2:2003)
EN 14626:2012 Ambient air - Standard method for the measurement of the concentration of carbon monoxide by non-dispersive infrared spectroscopy
EN ISO 16017-1:2000 Indoor, ambient and workplace air - Sampling and analysis of volatile organic compounds by sorbent tube/thermal desorption/capillary gas chromatography - Part 1: Pumped sampling (ISO 16017-1:2000)
EN ISO 6145-8:2008 Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 8: Diffusion method (ISO 6145-8:2005)
EN 14042:2003 Workplace atmospheres - Guide for the application and use of procedures for the assessment of exposure to chemical and biological agents
EN 14212:2012/AC:2014 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF SULPHUR DIOXIDE BY ULTRAVIOLET FLUORESCENCE
EN 14211:2012 Ambient air - Standard method for the measurement of the concentration of nitrogen dioxide and nitrogen monoxide by chemiluminescence
EN 838:2010 Workplace exposure - Procedures for measuring gases and vapours using diffusive samplers - Requirements and test methods
EN 14625:2012 Ambient air - Standard method for the measurement of the concentration of ozone by ultraviolet photometry
I.S. EN 1231:1997 WORKPLACE ATMOSPHERES - SHORT TERM DETECTOR TUBE MEASUREMENT SYSTEMS - REQUIREMENTS AND TEST METHODS
13/30267536 DC : 0 BS EN 60079-29-1 ED 2.0 - EXPLOSIVE ATMOSPHERES - PART 29-1: GAS DETECTORS - PERFORMANCE REQUIREMENTS OF DETECTORS FOR FLAMMABLE GASES
10/30210753 DC : 0 BS EN 14625 - AMBIENT AIR QUALITY - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF OZONE BY ULTRAVIOLET PHOTOMETRY
BS ISO 6145-1 : 2003 GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC VOLUMETRIC METHODS - PART 1: METHODS OF CALIBRATION
17/30323887 DC : 0 BS EN 62990-131 - WORKPLACE ATMOSPHERES - PART 1: GAS DETECTORS - PERFORMANCE REQUIREMENTS OF DETECTORS FOR TOXIC GASES
BS EN 61779-1:2000 Electrical apparatus for the detection and measurement of flammable gases General requirements and test methods
CSA C22.2 NO. 60079-29-1:17 EXPLOSIVE ATMOSPHERES - PART 29-1: GAS DETECTORS - PERFORMANCE REQUIREMENTS OF DETECTORS FOR FLAMMABLE GASES
I.S. EN 60079-29-1:2016 EXPLOSIVE ATMOSPHERES - PART 29-1: GAS DETECTORS - PERFORMANCE REQUIREMENTS OF DETECTORS FOR FLAMMABLE GASES
I.S. EN ISO 6145-1:2008 GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC VOLUMETRIC METHODS - PART 1: METHODS OF CALIBRATION
I.S. EN 50241-1:1999 SPECIFICATION FOR OPEN PATH APPARATUS FOR THE DETECTION OF COMBUSTIBLE OR TOXIC GASES AND VAPOURS - GENERAL REQUIREMENTS AND TEST METHODS
BS EN 14212:2012 Ambient air. Standard method for the measurement of the concentration of sulphur dioxide by ultraviolet fluorescence
BS EN 14626:2012 Ambient air. Standard method for the measurement of the concentration of carbon monoxide by non-dispersive infrared spectroscopy
ISO 16017-2:2003 Indoor, ambient and workplace air — Sampling and analysis of volatile organic compounds by sorbent tube/thermal desorption/capillary gas chromatography — Part 2: Diffusive sampling
EN 61779-1 : 2000 AMD 11 2004 ELECTRICAL APPARATUS FOR THE DETECTION AND MEASUREMENT OF FLAMMABLE GASES - PART 1: GENERAL REQUIREMENTS AND TEST METHODS
DIN EN 13528-3:2004-04 Ambient air quality - Diffuse samplers for the determination of concentrations of gases and vapours - Part 3: Guide to selection, use and maintenance
EN ISO 17621:2015 Workplace atmospheres - Short term detector tube measurement systems - Requirements and test methods (ISO 17621:2015)
DIN EN 14042:2003-07 WORKPLACE ATMOSPHERES - GUIDE FOR THE APPLICATION AND USE OF PROCEDURES FOR THE ASSESSMENT OF EXPOSURE TO CHEMICAL AND BIOLOGICAL AGENTS

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