Volume 6, Issue 6 (November 1978)

    Development of Light- and Water-Exposure Apparatus


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    Several developments designed to solve the problems found in the operation of light- and water-exposure apparatus of enclosed carbon arc type, open flame carbon arc type, and xenon arc type are described. The life of carbon rods was lengthened from 20 to 48 h in an enclosed carbon arc lamp and from 20 to 60 h in an open flame carbon arc lamp. In a xenon lamp the rate of the decrease in radiation output was reduced, doubling the life of the lamp. An automatic system for light intensity control in a xenon arc maintained a constant level of intensity throughout the test period, and an automatic system for black-panel temperature control made it possible to minimize the variation of temperature to within ±1°C. These developments increase the usefulness in operational procedure and improve the reproducibility of the test.

    Author Information:

    Suga, S
    Member of ASTM, Suga Test Instruments Co., Ltd., Tokyo,

    Stock #: JTE10577J

    ISSN: 0090-3973

    DOI: 10.1520/JTE10577J

    ASTM International is a member of CrossRef.

    Title Development of Light- and Water-Exposure Apparatus
    Symposium , 0000-00-00
    Committee G03