The LISST-SL (for StreamLined) is a multi-parameter river profiling instrument, measuring sediment size distribution and concentration, velocity, depth and temperature. For use in freshwater.
The streamlined body is a minimum drag shape. Twin fins below the body orient the LISST-SL facing upstream just before immersion. A pitot static tube on top of the body measures river velocity.
The system employs active control of the intake pump that matches river velocity to intake velocity making the sample acquisition isokinetic. Diffracted light is measured in an included electro-optics section.
Please note: Sequoia is accepting orders for the next generation version. Projected delivery date is late September 2017.