LISST-200X User’s Manual LISST-200X Introduction and Tutorial Page 6
The LISST-200X does not contain internal batteries (except a small
battery to maintain the real-time clock), but can be powered from
multiple sources including a USB computer cable, Small or Large
Battery Packs (provided with the instrument) or an external instrument
such as a CTD.
The standard Small Battery Pack supplied with the LISST-200X uses
two NiMH rechargeable D-cell batteries and will provide about 12 hours
of continuous sampling.
The Large Battery Pack contains 16 standard alkaline D-cells. For
profiling applications, where the instrument is sampling continuously,
the Large Battery Pack has about 200 hours of sampling time or 200
days of stand-by. Powering down the instrument between samples can
greatly extend the deployment times. An Excel spreadsheet that can
estimate the battery consumption is included with the software on the
Ship Disk you received with your instrument. The spreadsheet can also
be downloaded from www.sequoiasci.com/product/lisst-200x, click
Library, then Downloads, then LISST-200X.
For laboratory or tethered usage, power can be supplied through the
communications connector on the endcap. A 2-meter USB cable is
provided that will power the instrument from the computers USB port.
No additional power is required to operate the instrument.
Cables up to 50 meters can be provided to supply external power and
communication with the instrument. This can allow real-time
observation of the size distributions.
The instrument is shipped pre-aligned and tested. A small chamber is
provided for obtaining measurements of background scattered light
from optical surfaces. This background is subtracted from actual
particle scattering measurements to obtain the true particulate
scattering. Additionally, small tools used to open endcaps, spare
batteries, and communication cable is supplied so that a user need only
provide a PC running Windows.
For extended laboratory applications various chambers are available
from Sequoia.
Software is provided to communicate with the instrument, schedule an
experiment, offload the data, and invert the measurements to obtain
particle size distribution and volume concentration. For laboratory use
or for monitoring the progress of an experiment, the software can be
used for real-time processing.
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