The Calculation of Gas Transmission Rates Measured by Manometric Methods

    Volume 2, Issue 6 (November 1974)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Page Count: 4


    Evans, RE
    Research physicistMember of ASTM, American Cyanamid Co., Chemical Research Division, Stamford, Conn.

    Abstract

    It is shown that an error in the calculated gas transmission rate of greater than 20 percent can result when using the standard equation presented in Method M of the American Society for Testing and Materials Test for Gas Transmission Rate of Plastic Film and Sheeting [D 1434–66 (1972)]. The magnitude of this error is shown to be a function of both cell void volume and pressure. Therefore, disagreements in results calculated using different cells and operating conditions can be explained. The exact solution of the equation is presented together with an approximation; the latter facilitates calculations and results in an error of less than one percent.


    Paper ID: JTE11687J

    DOI: 10.1520/JTE11687J

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    Author
    Title The Calculation of Gas Transmission Rates Measured by Manometric Methods
    Symposium , 0000-00-00
    Committee D02