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Upstream conditions: Upstream conditions should promote laminar flow conditions at the flume inlet. Channel turns splits elevation drops or other obstructions within five times the height of the flume should be avoided. The width of the channel should ...
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width or a combination of floor and sidewall contractions. Flumes that are solely width-contracted are especially suitable for sites ... particular advantages compared to more traditional devices such as Parshall flumes. These older devices are laboratory-calibrated because the flow ...
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flumes to measure the rate of flow in the system. The Parshall flume has a special shape that is designed ... Flumes " PAP-523 April 1988 the measured flow rate in the one foot Parshall flume located at the Bureau is ...
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flumes to be subsequently discussed. Some states specify the use of Parshall flumes by law for certain situations. ... other modified Parshall flumes because they do not include the part of the full Parshall flume where the submergence head ...
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John Replogle for over 20 years. Replogle flumes are particularly well suited for use in irrigation canals and have major advantages over all other known weirs and flumes (e.g. Parshall flumes sharp-crested weirs cutthroat flumes). ...
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It is usually recommended by State engineers and hydrologists to use a flume when monitoring flows in irrigation and other open channel applications. ... the downward sloping floor in the throat gives the Parshall flume its ability to withstand relatively high degrees of submergence ...
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flumes constrict primarily horizontally and are design for rectangular or trapezoidal channels. Click HERE for Diagrams and Parshall flume table ... Used to monitor free fall outflow from pipes or channels when a Palmer-Bowlus or Parshall Flume will not work. ...
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Free Flow Nested Construction Parshall Flumes are designed for applications where initial flow rates are expected to be significantly less than ... Free Flow Parshall flumes can be ordered with special modifications or non-standard dimensions for specific applications. Typical custom fabrications include: ...
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For the past 20 years Plasti-Fab H flumes have been successfully used in the sanitary field to measure ... Because of the unique throat which resembles a weir in some respects the H flumes provide excellent resolution at low flows and still have capacity ...
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Used in monitoring sewage plant effluent storm water and irrigation water the Parshall flume is still the best known and most widely used for permanent installations. It is available in throat sizes from 1 inch to 12 feet. Parshall flumes are available with numerous accessories and adaptations to match ...
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BROADER TERMS;toggleImage('NtImage','images/icons/minus-icon.gif','images/icons/plus-icon.gif');){kind=icon}
NARROWER TERMS