Capacitance based mass metering for cryogenic fluids

    Authors

    M. A. Nurge; R. Youngquist;D. Walters

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Cryogenics

    Keywords

    hydrogen; nitrogen; oxygen; dielectric properties; instrumentation; Thermodynamics; Physics, Applied

    Abstract

    This paper describes a method for measuring the mass of cryogenic fluids in on-board rocket propellant tanks or ground storage tanks. Linear approximations to the Clausius-Mossotti relationship serve as the foundation for a capacitance based mass sensor, regardless of fluid density stratification or tank shape. Sensor design considerations are presented along with the experimental results for a capacitance based mass gage tested in liquid nitrogen. This test data is shown to be consistent with theory resulting in a demonstrated mass measurement accuracy of +/-0.75% and a deviation from linearity of less than +/-0.30% of full scale mass. Theoretical accuracies are also shown to be +/-0.73% for hydrogen and +/-1.39% for oxygen for a select range of pressures and temperatures. Published by Elsevier Ltd.

    Journal Title

    Cryogenics

    Volume

    43

    Issue/Number

    9

    Publication Date

    1-1-2003

    Document Type

    Article

    Language

    English

    First Page

    501

    Last Page

    506

    WOS Identifier

    WOS:000184980300002

    ISSN

    0011-2275

    Share

    COinS