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The Series channels are 300 mm in width, 450 mm in height,and are available in 2.5 metre, 5 metre, 7.5 metre, 10 metre, 12.5 metre and 15metre lengths. The flumes have various models available, giving students a widechoice of experimentation in open channel flow. The flumes have a built-inre-circulating water supply connected to a digital flow metre for accuratemeasurements during experimentation. The flumes have pressure measurement tappingsat 0.25 metre intervals along the working section. These tappings can connecteither to a multi-tube manometer or to a 32-way pressure display. The 32-waypressure display connects for real-time data acquisition. Each is supplied withtwo level gauges and a Pitot tube, all of which mount onto and run along theinstrument rails at the top of the flume. Measurements from these instrumentscombined with the digital flow meter provide the potential for extensive analysisof open channel flow for research or advanced study. Bed-load transport can beinvestigated using the optional Sediment Loop. This ancillary provides a closedsediment circuit consisting of a sediment trap and feed mechanism which allowssand to be pumped from the trap to a feeder located above the working sectionbetween experiments. The flume is made of transparent glass, precision-built toensure parallel walls and a consistently accurate cross section along itslength. A sturdy steel square-section firmly supports the channel throughoutits length. It has a floor-standing frame that supports the working section ata convenient eye-level position for students. Screw jacks raise and lower thesupports inclining the channel as required. The digital inclinometer gives anaccurate display of the channel angle. A pump with a speed controller, forceswater up to the flow settling chamber at the upstream end of the channel. Thisgives smooth, uniform flow, free from entry effects.