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LISST-ABS for Protecting Hydro Turbines from Abrasion

October 23, 2015

Sequoia manufactures two instruments based on laser diffraction for monitoring sediments entering hydro turbines. These are the LISST-Hydro and LISST-Infinite. These two produce data on sediment concentration sorted into 3 size classes – fine (<75μm),...

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LISST-ABS and Optical Turbidity Views of a River Column

August 27, 2015

The LISST-ABS would reveal rich sediment structure that turbidity misses. For measuring suspended sediments, the use of optical backscatter sensors or other turdibity sensors is widespread. At the same time, it is understood that these sensors respond...

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How The LISST-ABS Works

May 1, 2015

Updated: 4 March 2016. INTRODUCTION: Sequoia’s Acoustic Backscatter Sensor, LISST-ABS is designed to measure suspended sediment concentration at a point. Unlike ADCP’s which may record similar backscatter strength at multiple points (‘ranges’)...

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