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  • EN ISO 6145-6:2017

    Current The latest, up-to-date edition.

    Gas analysis - Preparation of calibration gas mixtures using dynamic methods - Part 6: Critical flow orifices (ISO 6145-6:2017)

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    Published date:  16-08-2017

    Publisher:  Comite Europeen de Normalisation

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    Abstract - (Show below) - (Hide below)

    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.

    General Product Information - (Show below) - (Hide below)

    Committee CEN/TC 238
    Document Type Standard
    Publisher Comite Europeen de Normalisation
    Status Current

    Standards Referenced By This Book - (Show below) - (Hide below)

    DIN EN 14212 E : 2012 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF SULPHUR DIOXIDE BY ULTRAVIOLET FLUORESCENCE
    I.S. EN 838:2010 WORKPLACE EXPOSURE - PROCEDURES FOR MEASURING GASES AND VAPOURS USING DIFFUSIVE SAMPLERS - REQUIREMENTS AND TEST METHODS
    EN 1076:2009 Workplace exposure - Procedures for measuring gases and vapours using pumped samplers - Requirements and test methods
    BS EN 60079-29-1:2007 Explosive atmospheres Gas detectors. Performance requirements of detectors for flammable gases
    UNE-EN 60079-29-1:2017 Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases
    DIN EN 1076:2010-04 Workplace exposure - Procedures for measuring gases and vapours using pumped samplers - Requirements and test methods
    DIN EN 14211 E : 2012 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF NITROGEN DIOXIDE AND NITROGEN MONOXIDE BY CHEMILUMINESCENCE
    DIN EN 14212:2012-11 Ambient air - Standard method for the measurement of the concentration of sulphur dioxide by ultraviolet fluorescence
    DIN EN 14625:2012-12 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF OZONE BY ULTRAVIOLET PHOTOMETRY
    DIN EN 14211:2012-11 Ambient air - Standard method for the measurement of the concentration of nitrogen dioxide and nitrogen monoxide by chemiluminescence
    DIN EN 14662-3:2016-02 AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF BENZENE CONCENTRATIONS - PART 3: AUTOMATED PUMPED SAMPLING WITH IN SITU GAS CHROMATOGRAPHY
    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
    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 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
    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
    BS EN 1076:2009 Workplace exposure. Procedures for measuring gases and vapours using pumped samplers. Requirements and test methods
    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 1076 : 2010 WORKPLACE EXPOSURE - PROCEDURES FOR MEASURING GASES AND VAPOURS USING PUMPED SAMPLERS - REQUIREMENTS AND TEST METHODS
    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
    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
    DIN EN 838:2010-05 Workplace exposure - Procedures for measuring gases and vapours using diffusive samplers - Requirements and test methods
    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
    BS EN 14625:2012 Ambient air. Standard method for the measurement of the concentration of ozone by ultraviolet photometry
    UNE-EN 14211:2013 Ambient air - Standard method for the measurement of the concentration of nitrogen dioxide and nitrogen monoxide by chemiluminescence
    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 14626:2012 Ambient air - Standard method for the measurement of the concentration of carbon monoxide by non-dispersive infrared spectroscopy
    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
    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

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 12963:2017 Gas analysis — Comparison methods for the determination of the composition of gas mixtures based on one- and two-point calibration
    ISO 9300:2005 Measurement of gas flow by means of critical flow Venturi nozzles
    ISO 16664:2017 Gas analysis — Handling of calibration gases and gas mixtures — Guidelines
    ISO 6143:2001 Gas analysis — Comparison methods for determining and checking the composition of calibration gas mixtures
    ISO 19229:2015 Gas analysis Purity analysis and the treatment of purity data
    ISO 14912:2003 Gas analysis — Conversion of gas mixture composition data
    VDI 3490 Blatt 16:1994-10 Measurement of gases - Calibration gas mixtures - Dynamic preparation with critical orifice systems
    ISO 7504:2015 Gas analysis Vocabulary
    ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
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