Sequoia LISST-Hydro, User Manual

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Section 1: Introduction
Introduction
The LISST-Infinite is a suspended sediment sensor that uses laser
diffraction to measure the detailed size distribution and concentration of
particles suspended in water. It has an auto-dilution system that allows
a sample of water to be automatically diluted with clean water. This
automatic dilution enables for the accurate measurement of water with
concentration up to approximately 30,000 ppm (by mass).
Instrument
Overview
The LISST-Infinite system consists of a main optics and control unit, a
submersible pump (optional), associate power and control hardware, a
source of filtered water, and a Windows based PC running the data
collection software.
LISST-Infinite
Main optics and
control unit
details
The LISST-Infinite main optics and control unit system consists of the
following main components:
1) LISST-Infinite flow through cell and optics
2) Upper and lower 3-way pinch valves
3) Dilution Chamber and mixing pump
4) Valve controller and main electronics board.
Figure 1. LISST-Infinite Main components. Main components include a) LISST-Infinite flow
through cell and optics, b) Upper 3-way pinch valve, c) Set of Lower 3-way pinch valve d)
Dilution Chamber; e) Mixer Pump; f) Valve controller and elctronics boards, g) Clean water
tank level sensor.