Water Pressure Measurement with Time Domain Reflectometry Cables

    Volume 19, Issue 1 (March 1996)

    ISSN: 0149-6115

    CODEN: GTJOAD

    Page Count: 7


    Dowding, CH
    Professor, Northwestern University, Evanston, IL

    Huang, F
    Geotechnical engineer, American Technical, Anaheim, CA

    McComb, PS
    Commanding officer, U.S. Naval Mobile Construction Battalion Forty,

    Abstract

    Attributes of the remote measurement of piezometric water pressure and water level with time domain reflectometry (TDR) techniques are investigated. The evaluation includes a two-wire system for unusually small riser tubes as well as parallel wire and air-filled or hollow coaxial cable for typical installations. Comparison of TDR cable and commercial pressure transducer technology shows coaxial cable TDR systems with distance crimps capable of equaling and exceeding the resolution of pressure transducers. Crimps provide permanent distance markers that allow the TDR system to be self-calibrating.


    Paper ID: GTJ11408J

    DOI: 10.1520/GTJ11408J

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    Author
    Title Water Pressure Measurement with Time Domain Reflectometry Cables
    Symposium , 0000-00-00
    Committee D18