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EER Senior Project Continued Development of Prof. Hedrick’s Water Sampler

EER Senior Project Continued Development of Prof. Hedrick’s Water Sampler. Project Advisor: Prof. Hedrick Advisee: Nathan Perrin. Goals of Project. Integration of temperature and conductivity sensor with existing hardware. Development of data storage and retrieval.

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EER Senior Project Continued Development of Prof. Hedrick’s Water Sampler

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  1. EER Senior ProjectContinued Development of Prof. Hedrick’s Water Sampler Project Advisor: Prof. HedrickAdvisee: Nathan Perrin

  2. Goals of Project • Integration of temperature and conductivity sensor with existing hardware. • Development of data storage and retrieval. http://pinker.wjh.harvard.edu/

  3. Diagram of Project

  4. Background • The water sampler is currently used to collect water samples at a user specified time interval. • The water sampler is used in determining stream flow characteristics. http://www.epa.gov/safewater/kids/wsb/pdfs/354.pdf

  5. Purpose of Measuring Conductivity. www.epa.gov “Conductivity in water is affected by the presence of inorganic dissolved solids such as chloride, nitrate, sulfate, and phosphate anions (ions that carry a negative charge) or sodium, magnesium, calcium, iron, and aluminum cations (ions that carry a positive charge). Organic compounds like oil, phenol, alcohol, and sugar do not conduct electrical current very well and therefore have a low conductivity when in water.”

  6. Karst http://web.mala.bc.ca/geoscape/Karst.htm

  7. Application of Conductivity Specific Conductance (Measurement taken at 25 °C of Barton Spgs at Austin, TX waterdata.usgs.gov USGS Site 08155500 Barton Spgs at Austin, TX

  8. Conductivity Meter Specifications of Conductivity Measurements 2 mS: 0.2 to 2.0 mS/0.001 mS/±(3%FS +1d) 20 mS: 2 to 20.0 mS/0.01 mS/±(3%FS +1d) www.omega.com

  9. Specific Conductivities Different Water Samples http://www.thermorussell.com/techcond.htm

  10. Data Storage and Collection • Readings from sensor will be stored for each water sample taken. • Formatting of readings will allow user to quickly find tubes containing sample with conductivity levels of interest. • Use of removable media would allow easy access to collected data.

  11. Acknowledgments • Prof. Hedrick (Union College) • Gene Davison • Prof. Shaw (Union College)

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