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7/14/2009 5:02:31 PM
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5/20/2009 10:53:53 AM
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UCREFRP
UCREFRP Catalog Number
7792
Author
Kolz, A. L.
Title
In-water Electrical Measurements for Evaluating Electrofishing Systems.
USFW Year
1993.
USFW - Doc Type
\
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Contents <br />Page <br />Abstract 1 <br />.............................................. <br />Measurement of Electrode Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 <br />Electrical Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 <br />Measurement Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 <br />Effects of Water Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 <br />Measured Resistance Values for Metal Cylinders . . . . . . . . . . . . . . . . . . . . . . 4 <br />Circuit Analysis Techniques for Electrode Arrays . . . . . . . . . . . . . . . . . . . . . . . . 4 <br />Resistance Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 <br />Voltage and Current Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 <br />Power Analysis 6 <br />. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <br />Comments on Power Supply Instrumentation . . . . . . . . . . . . . . . . . . . . . . . . 6 <br />Voltage Measurements in a Volume of Water . . . . . . . . . . . . . . . . . . . . . . . . . . 6 <br />Quasi-technical Concepts for Electric Fields in Water . . . . . . . . . . . . . . . . . . . . 7 <br />In-water Voltage Measurement Techniques . . . . . . . . . . . . . . . . . . . . . . . . . 8 <br />Test Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 <br />Description of the Test Electrodes . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . 11 <br />Measurement Site and Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 <br />Presentation of In-water Electrode Measurements . . . . . . . . . . . . . . . . . . . . . . . 12 <br />Values of Electrode Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 <br />Spatial Comparisons of Electric Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 <br />Voltage Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 <br />Voltage Gradient Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 <br />Discussion of the Voltage Gradient Vector . . . . . . . . . . . . . . . . . . . . . . . . . . 17 <br />Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 <br />Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 <br />References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 <br />Appendix. Glossary of Electrical Terms .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 <br />iii
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