Click on “Download PDF” for the PDF version or on the title for the HTML version. If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options. A Low-Cost Composite Water Sampler for Drip and Stream FlowPublished by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org Citation: Paper number 022148, 2002 ASAE Annual Meeting . (doi: 10.13031/2013.10407) @2002Authors: R. W. Malone, J. V. Bonta, D. Lightell Keywords: Hydrologic instrumentation, water quality, flow-weighted, flow-proportional The collection of flow-proportional samples when flow rates range from slow drip flow to slow stream flow is important in hydrology. A rotating slot sampler was modified for this purpose and its field and lab performance were monitored. The major design criteria include: function for flow rates between 0.5 and 200 mL/min; minimize sampler-fraction variance between trials; allow total flow volume estimate from sampler-fraction volume; compact in size; useful in remote conditions; low-cost; low-maintenance; and easily constructed from readily obtainable materials. The designed sampler collected approximately 2.0% of total flow (sampler-fraction) with a sampler-fraction coefficient of variation between trials of less than 5%. This allows total flow to be estimated and flowproportional samples for water quality analysis to be collected. (Download PDF) (Export to EndNotes)
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