• NEN EN 14626 : 2012

    Current The latest, up-to-date edition.

    AMBIENT AIR - STANDARD METHOD FOR THE MEASUREMENT OF THE CONCENTRATION OF CARBON MONOXIDE BY NON-DISPERSIVE INFRARED SPECTROSCOPY

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    Published date:  12-01-2013

    Publisher:  Netherlands Standards

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Symbols and abbreviated terms
    5 Principle
       5.1 General
       5.2 Measuring principle
       5.3 Type approval test
       5.4 Field operation and quality control
    6 Sampling equipment
       6.1 General
       6.2 Sampling location
       6.3 Sample inlet and sampling line
       6.4 Particulate filter
       6.5 Control and regulation of sample flow rate
       6.6 Sampling pump for the manifold
    7 Analyser equipment
       7.1 General
       7.2 Interferences due to infrared absorbing gases
       7.3 Details about analyser equipment
       7.4 Pressure measurement
       7.5 Flow rate indicator
       7.6 Sampling pump for the analyser
    8 Type approval of CO-NDIR analysers
       8.1 General
       8.2 Relevant performance characteristics and performance
            criteria
       8.3 Design changes
       8.4 Procedures for determination of the performance
            characteristics during the laboratory test
       8.5 Determination of the performance characteristics during
            the field test
       8.6 Expanded uncertainty calculation for type approval
    9 Field operation and ongoing quality control
       9.1 General
       9.2 Suitability evaluation
       9.3 Initial installation
       9.4 Ongoing quality control
       9.5 Calibration of the analyser
       9.6 Checks
       9.7 Maintenance
       9.8 Data handling and data reports
    10 Expression of results
    11 Test reports and documentation
       11.1 Type approval tests
       11.2 Field operation
    Annex A (normative) Test of lack of fit
    Annex B (informative) Sampling equipment
    Annex C (informative) Sampling on micro scale
    Annex D (informative) Schematics of non-dispersive infrared
                          spectrometer
    Annex E (informative) Manifold testing equipment
    Annex F (normative) Type approval
    Annex G (normative) Calculation of uncertainty in field
                          operation at the 8-hour mean limit value
    Bibliography

    Abstract - (Show below) - (Hide below)

    Defines a continuous measurement method for the determination of the concentration of carbon monoxide present in ambient air based on the non-dispersive infrared spectroscopic measuring principle.

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    Document Type Standard
    Publisher Netherlands Standards
    Status Current
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