ASTM WK46429

    New Practice for Practice for Determination of Specimen Irradiance in an Accelerated Weathering Device

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    Developed by Subcommittee: G03.09 | Committee G03 | Contact Staff Manager



    WK46429

    1. Scope

    1.1This practice covers the basic principles and procedures for measuring the irradiance incident upon specimens in a weathering device when operating a specified weathering method. 1.2Requirements of radiometers and spectrometers for making irradiance measurements and procedures for their calibration are described. 1.3This practice is applicable to all types of weathering devices including fluorescent ultraviolet lamp devices, filtered xenon arc devices and metal halide devices.

    Each weathering device manufacturer has their own approach to calibration of irradiance. Lack of specific guidelines for the reliable determination of specimen irradiance in weathering devices is a significant factor in the variabiliy of artificial weathering test results. This standard will propose a uniform set of best practices for the choice and calibration of radiometers used to measure the irradiance provided by the various types of weathering devices. It is intended for use by manufacturers, test laboratories and end users of weathering devices.


    Keywords

    calibration, weathering, artificial, accelerated

    The title and scope are in draft form and are under development within this ASTM Committee.

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    Work Item Status

    Date Initiated:
    06-16-2014

    Technical Contact:
    David Burns

    Status:
    Draft Under Development