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Sequoia Scientific

LISST-200X

Measures Particle Size Distribution and Concentration; and Optical VSF

Sediment sensor holding calibration FOR LIFE!

Our workhorse LISST-200X marks a major advance in technology over our discontinued LISST-100X submersible laser-diffraction instrument. The LISST-200X is used in rivers, streams, ports, harbors, coasts and oceans. It also measures the small-angle optical volume scattering function (VSF).

The LISST-200X holds calibration for life.

  • Measures Particle Size and Concentration
  • Particle Size Range:  1.0 to 500 microns
  • Small angle VSF: 0.039 to 13.8 degrees.
  • Extended Depth Rating: 600 meters
  • Automated Pass/Fail report on Backgrounds
  • Half the physical size of the discontinued LISST-100X
  • Smarter data file structure
  • Analog output of size and concentration
  • Plug and Play Compatible with most CTDs

Download the LISST-200X vs. LISST-100X comparison

Why the LISST-200X is Smarter and not just Smaller

Features

The LISST-200X is a submersible laser-diffraction based particle size analyzer designed to measure particle size and concentration in rivers, streams, ports, harbors, coasts and oceans, whether for biological, sediment transport, or environmental monitoring needs.

Applications include sediment transport studies, harmful algae blooms, oil spill dispersion effectiveness, dredge plume monitoring, etc.  For marine optics applications the LISST-200X provides the small-angle Volume Scattering Function.

20 years of LISST-100X experience combined with feedback from users has led us to create this Smaller, Deeper, and Smarter Particle Size Analyzer.

LISST-200X LISST-100X Comparison

The LISST-200X is significantly smaller than the LISST-100X was. It has also been made stronger and is able to make measurements at twice the depth: up to 600 meters. Improved optics cover the size range 1- 500 microns in 36 size classes. The optics are also more robust and have improved rejection of ambient light. A superior depth sensor and a faster temperature sensor improve profiling data. The 25 mm optical path allows a wider working range of particle concentrations. Auxiliary information, such as calibrations and background files, are stored in the saved data file. All information needed to process the data are included in this single file, therefore alleviating the need for tracking multiple files.

The LISST-200X also outputs the Mean Size and Total Concentration as analog voltages while simultaneously storing the full size distribution internally for later downloading. This allows real-time monitoring of summary data during profiles via existing CTD interfaces.

LISST-200X Connector Endcap

A full range of accessories are available for the LISST-200X, see Accessories tab above.

This next generation particle sizer is simply smaller, deeper and smarter, whether for lab or field use.

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Specifications

Technology

  • Small-angle forward scattering
  • 32-ring custom photodiode Ring Detector + 4 large angle detectors
  • 25 mm optical path

Parameters measured

  • Particle Size Distribution from 1.0-500 µm in 36 size ranges
  • Depth (600 m max depth @ 0.01 m resolution)
  • Temperature @ 0.01 deg C resolution
  • Optical transmission @ 0.1% resolution
  • Volume Concentration @ 0.1 µl/l resolution
  • Volume Scattering Function from 0.039 to 13.8 degrees in water
  • Analog output of Mean Size and Volume Concentration

Operating Concentration range

  • Optical transmission from 0.3-0.99 (30-99%)
  • Concentration from ~ 0.5-700 mg/l (grain-size dependent)

Mechanical and electrical

  • Dimensions 10.03 cm (3.95”) Ø x 63.9 cm (25.2”) L
  • Weight: 5.4 kg (11.9 lbs) in air, 1.7 kg (3.8 lbs) in water
  • 600 meter depth rating
  • External power input: 12 VDC nominal, 8-24 VDC
  • Sampling rate: Up to 1 Hz
  • Current drain at 12 V: 100 mA Sampling, 8 mA between samples
  • Data storage: 1 GB (~12,500,000 size distributions)

LISST-200x dimensions

 

Large external battery housing 

  • Dimensions 10.03 cm (3.95”) Ø x 53.4 cm (21.0”) L
  • Weight (including 16 Alkaline D cells): 5.2 kg (11.9 lbs) in air, 1.5 kg (3.3 lbs) in water
  • Small external battery housing
  • Dimensions 6.35 cm (2.5″) Ø x 30.2 cm (11.9″) L
    Weight
  • LISST-200X Battery Dimensions

 

Accessories

LISST-200X Item # and Description

Item #DescriptionThumbnail
SEQ-FP-L200XLISST-200X Sediment Size Distribution Sensor
1.00-500 μm size range
600 m depth rating
1 GB of memory
Integrated depth and temperature sensor

Includes:
Large and Small Submersible External Battery Housings with short cable
Charger and rechargeable batteries for Small Submersible External Battery Housing
2 m communications cable with built-in USB
Small Volume Test Chamber
Pelican shipping container with custom foam cushioning
Windows software for programming, data offload and data analysis

LISST-200X Upgrade Options

Item #DescriptionThumbnail
SEQ-AC-L200X-UPGElectronics upgrade and testing of existing 200X to support -HAB and -Black sensors.
SEQ-AC-SNR-MNTBlack/HAB mounting and cable hardware (w/o sensors)
Mounting and cable hardware but no sensors (requires an upgraded LISST- 200X and the correct Turner Designs sensors).
SEQ-AC-BLK-PKGLISST-Black sensor package
Black complete sensor package (includes mounting hardware/cables and Turner Designs hydrocarbon sensors but NOT upgraded LISST-200X).
SEQ-AC-HAB-PKGLISST-HAB sensor package
HAB complete sensor package (includes mounting hardware/cables and Turner Designs HAB sensors but NOT upgraded LISST-200X).

LISST-200X Accessories *NOT INCLUDED* with LISST-200X

Item #DescriptionThumbnail
SEQ-AC-L200X-PRMOptical Path Reduction Module for LISST-200X
Extends concentration range by factor of five by reducing the optical path from 25mm to 5mm. Included fused quartz cylinder and mounting hardware.
NOTE: The standard Background Test Chamber for LISST-200X will not work with the PRM in place. It is highly recommended to use the Large Volume Test Chamber for obtaining a background with the PRM installed.
SEQ-AC-L200X-CHLGLarge Volume Test Chamber for LISST-200X
Clear acrylic chamber with O-ring seal and drain. Used for obtaining clean water backgrounds with Path Reduction module installed.
SEQ-AC-L200X-SCOOPScoop for LISST-200X optics
For applications in rivers and other regions where the LISST-200X is pointed into the flow. Ensures a diverted flow of water through the optical path of the LISST-200X. Includes s/s bolts and nuts.
SEQ-AC-L200X-FRMMounting Frame for LISST-200X & Small Battery
316 s/s frame. Includes:
Frame
Bridle
Small battery housing clamps (set of two clamps)
SEQ-AC-L200X-FRM-CLPSmall battery housing clamp (set of two clamps)
NOTE: Clamps are included with the LISST-200X frame.
SEQ-AC-L200X-SCBL-MMLISST-200X to SBE-9 CTD cable
2 m cable with Impulse 6-pin MCIL-6-FS connectors on each end, wired pin to pin
Allows connection of LISST-200X to Sea Bird CTD with Impulse MCBH connectors.
SEQ-AC-L200X-SCBLB-AMLISST-200X to SBE-9 CTD cable
2 m cable with Impulse 6-pin MCIL-6-FS connector on one end, and Impulse AG206-FS connector on opposite end, wired pin to pin.
Allows connection of LISST-200X to Sea Bird CTD with Impulse AG connectors.
SEQ-AC-L200X-CHFPFull Path Flow Through Chamber for LISST-200X
Flow through chamber that allow pumped water to pass through the optics of the LISST-200X. Simple to install. Includes barb fittings for 1/2” ID tubing. Compatible with standard 1/2” NPT fittings.
SEQ-AC-L200X-CBLBConnector Base – Custom length integrated Communication and external power cable for LISST-200X/-100X/-STX/-Deep
Includes built-in USB adapter that allows the instruments to be powered from PC USB port.
Note: must specify length of cable required by ordering item below
SEQ-AC-L200X-CBLCustom length integrated Communication and external power cable for LISST-200X/-100X/-STX/-Deep
Customer to specify cable length. Must order with SEQ-AC-L200X-CBLB. E.g. to order a 35 m cable:
1 x SEQ-AC-L200X-CBLB
35 x SEQ-AC-L200X-CBL
SEQ-AC-L200X-DPSRTowed Underwater Depressor
Designed to secure the LISST-200X instrument into a tow-body configuration, allowing the ability to be deployed from all types of watercraft working at speed. Includes tow-body and installation brackets for securing. Weight in air 25 lbs.

LISST-200X Accessories *INCLUDED* w/ LISST-200X

Item #DescriptionThumbnail
SEQ-AC-L200X-LEBLarge External Battery Housing for LISST-200X
Anodized aluminum housing for external battery pack with underwater connectors for mating with LISST-200X. Includes 16 non-rechargeable alkaline D cells installed. Suitable for longer deployments. 600 m depth rating.
*Included as part of LISST-200X standard package.* Does not include cable SEQ-AC-L200X-BCS to connect to LISST-200X.
NOTE: Ships in a corrugated cardboard box.
The price does *NOT* include shipping container (e.g. SEQ-AC-L200X-SC).
SEQ-AC-L200X-SEBSmall External Battery Housing for LISST-200X
Plastic housing for external battery pack containing 2 rechargeable NiMH D cells with underwater connectors for mating with LISST-200X. Includes 4 rechargeable NiMH D cells and Battery Charger. 600 m depth rating.
*Included as part of LISST-200X standard package.* Does not include cable SEQ-AC-L200X-BCS to connect to LISST-200X
NOTE: Ships in a corrugated cardboard box.
The price does *NOT* include shipping container (e.g. SEQ-AC-L200X-SC).
SEQ-AC-L200X-SBATLISST-200X Rechargeable Batteries for Small Battery Pack
NiMH D cells, Qty. 4
*Included as part of LISST-200X standard package*
SEQ-AC-L200X-SCHGRLISST-200X Battery Charger for NiMH D Batteries
*Included as part of LISST-200X standard package*
SEQ-AC-L200X-BCSShort Cable for connecting Small or Large LISST-200X battery housing to LISST-200X
0.5 m long, 5-pin Male to 5-pin Female
*Included as part of LISST-200X standard package*
SEQ-AC-L200X-CHZSBackground Test Chamber for LISST-200X
Test chamber which holds small volume of water around optics while clean water background is obtained.
*Included as part of LISST-200X standard package*
SEQ-AC-L200X-CBL02Integrated Communication and external power cables for LISST-200X/-100X/-STX/-Deep
2 m length. Includes black-jacketed cable spliced to the single communications/power connector. Includes built-in USB adapter that allows the instruments to be powered from PC USB port.
*Included as part of LISST-200X standard package.*
SEQ-AC-L200X-SCShipping Case for LISST-200X
Plastic shipping case with custom cut foam for LISST-200X. Also has cut outs for Small and Large Batteries, spare batteries, Battery Charger, and short cables.
*Included as part of LISST-200X standard package.*

FAQ

What does the LISST-200X measure?

The LISST-200X measures the size and concentration of particles suspended in water.  It can measure particles from 1 to 500 microns.

It also measures the water temperature, depth, and optical transmission.

How does the LISST-200X differ from the LISST-100X?

The LISST-200X is very similar to the LISST-100X, but improved in almost every way.  It makes the same particle size and concentration measurements.  However, it is smaller, measures a wider range of sizes and can measure higher concentrations.  It also can output Mean Size and Total Concentration as analog voltages that can be monitored in real time, such as through a CTD, while the detailed size distribution and concentration information is stored on-board the instrument. For full details see the Feature Comparison: LISST-200X vs. LISST-100x

 

How deep can the LISST-200X operate?

The LISST-200X has a maximum depth rating of 600 meters which is twice the depth of the LISST-100X.  For deeper applications you can use the LISST-Deep instrument which is rated to 3000 meters.

Can I add the LISST-200X to my CTD?

The LISST-200X has been designed to plug right into existing CTD systems.  It has a dedicated 6-pin connector that is pin-to-pin compatible with SeaBird CTDs.  The LISST-200X will receive power from the CTD and output the Mean Size and Total Volume Concentration as analog voltages that can be viewed in real-time through the CTD cable.  The detailed size distribution information is stored on-board the instrument for later downloading.

How fast can I tow or profile the LISST-200X?

The LISST-200X uses laser diffraction to measure the size and concentration of particles.  This scattering occurs at the speed of light.  The speed of the water and particles passing through the laser beam does not change measurement.  As long as bubbles not being generated or shear forces are breaking up particles of interest speed does not effect the measurement.

How long does the Small External Battery last?

The LISST-200X Small External battery uses two rechargeable NiMH D-cells.  The LISST-200X can sample continuously at 1 Hz for 6 to 8 hours before the batteries will need to be replaced or charged.  We provide 4 batteries with the LISST-200X so that two batteries can be charged while two are being used.  An Excel spreadsheet is available to estimate the life of the battery when using different sampling conditions such as a burst every 15 minutes.

Can I use the LISST-200X as a laboratory particle size analyzer?

The LISST-200X is designed to be used submerged in water as its primary function.  However, like with the LISST-100X, we offer small chambers with a built-in mixer or flow through capability that allows you to use the LISST-200X in the lab as a particle size analyzer.

If the primary function of the instrument is to be laboratory instrument you might consider the LISST-Portable|XR particle size analyzer which is specifically designed to be used for laboratory particle sizing.