Water Pressure Measurement with Time Domain Reflectometry Cables

Water Pressure Measurement with Time Domain Reflectometry Cables

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 i...

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Veröffentlicht in:Geotechnical testing journal 1996-03, Vol.19 (1), p.58-64
Hauptverfasser: Dowding, CH, Huang, F, McComb, PS
Format: Artikel
Sprache:eng
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Applied sciences
Buildings. Public works
Exact sciences and technology
Geotechnics
Water effect, drainage, ground water lowering, filtration
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container_title Geotechnical testing journal
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creator Dowding, CH
Huang, F
McComb, PS
description 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.
doi_str_mv 10.1520/GTJ11408J
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ispartof Geotechnical testing journal, 1996-03, Vol.19 (1), p.58-64
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1945-7545
language eng
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source ASTM Journals
subjects Applied sciences
Buildings. Public works
Exact sciences and technology
Geotechnics
Water effect, drainage, ground water lowering, filtration
title Water Pressure Measurement with Time Domain Reflectometry Cables
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