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New hydrologic instrumentation in the U.S. Geological Survey

By:  and 
Edited by: Sodhi Devinder S.

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Abstract

New water-level sensing and recording instrumentation is being used by the U.S. Geological Survey for monitoring water levels, stream velocities, and water-quality characteristics. Several of these instruments are briefly described. The Basic Data Recorder (BDR) is an electronic data logger, that interfaces to sensor systems through a serial-digital interface standard (SDI-12), which was proposed by the data-logger industry; the Incremental Shaft Encoder is an intelligent water-level sensor, which interfaces to the BDR through the SDI-12; the Pressure Sensor is an intelligent, nonsubmersible pressure sensor, which interfaces to the BDR through the SDI-12 and monitors water levels from 0 to 50 feet; the Ultrasonic Velocity Meter is an intelligent, water-velocity sensor, which interfaces to the BDR through the SDI-12 and measures the velocity across a stream up to 500 feet in width; the Collapsible Hand Sampler can be collapsed for insertion through holes in the ice and opened under the ice to collect a water sample; the Lighweight Ice Auger, weighing only 32 pounds, can auger 6- and 8-inch holes through approximately 3.5 feet of ice; and the Ice Chisel has a specially hardened steel blade and 6-foot long, hickory D-handle.
Publication type Conference Paper
Publication Subtype Conference Paper
Title New hydrologic instrumentation in the U.S. Geological Survey
ISBN 0872627985
Year Published 1991
Language English
Publisher Publ by ASCE
Publisher location New York, NY, United States
Larger Work Title Cold Regions Engineering
First page 739
Last page 747
Conference Title Sixth International Cold Regions Engineering Conference
Conference Location West Lebanon, NH, USA
Conference Date 26 February 1991 through 28 February 1991
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