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Monitoring Groundwater Levels Using a Time-domain Reflectometry (TDR) Pulser
Glenn A. Nicholson
Jeff F. Powell
Kevin M. O'Connor
出版
U.S. Army Engineer Waterways Experiment Station
, 1997
URL
http://books.google.com.hk/books?id=TAc6AQAAMAAJ&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN
註釋
A rugged, self-calibrating, time-domain reflectometer (TDR) device for monitoring groundwater elevations in piezometers was developed and demonstrated. The primary advantage of the TDR device over conventional downhole transducer technology is that the electronics are fixed at the surface where they are accessible and easy to maintain. The TDR instrumentation is also simple to install and does not require field calibration.
