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Sequoia Scientific

Hyper-a Hyperspectral absorption instrument

LISST-Deep

Deep Submersible Particle Size Analyzer

Features

Features

  • 4,000 meter depth rating (prior to 2020, rating was 3,000)
  • Small angle forward scattering laser diffraction technology
  • Measures particle size, concentration, beam attenuation, VSF, depth, temperature
  • Self contained with internal programmable datalogger for autonomous data collection
  • Externally powered
  • Optional external battery pack, rated to 4,000 m depth
  • USB connection to PC for programming, offloading and real-time size distribution displays
  • Integrated depth and temperature sensor
  • Power and integrate up to three external analog sensors
  • 36 size classes
  • Analog output of mean particle size and total volume concentration for CTD integration
  • Real-time output of complete Particle Size Distribution

 

Specifications

Parameters measured

  • Particle size distribution from 1 µm to 500 µm
  • Depth (4,000 m max depth @ 0.1 m (10 cm) resolution)
  • Optical transmission @ 0.1 % resolution
  • Volume concentration @ 0.1 µl/l resolution
  • Volume scattering function (VSF)

Operating concentration range

  • Optical transmission from 0.3 to 0.985 (30 % to 98.5%)
  • Concentration range 1 mg/l to 800 mg/l (very strongly grain-size dependent)

Technology

  • Small-angle forward scattering
  • 32-ring custom photodiode ring detector for small-angle VSF + 4 large angle detectors
  • 50 mm optical path

Electrical

  • Power input: 9 to 24 VDC
  • Sampling rate: Up to 1 Hz
  • Power drain: 120 mA / <50 mA / < 3 mA (measuring / waiting / sleeping)
  • Data storage: 1 GB (~12,500,000 size distributions)

Mechanical

  • Dimensions 12.6 cm (4.95”) dia. by 96.3 cm (37.9”) L
  • Weight in air / water: 18.6 kg / 9.5 kg (41 lbs / 21 lbs)
  • Weight of optional battery housing & pack in air / water: 9.9 kg / 5.4 kg (22 lbs / 11.6 lbs)
  • Maximum depth: 4,000 m (for serial numbers 4050 and higher)

LISST-Deep drawing with dimensions

Accessories

LISST-Deep Item # and Description

Item #DescriptionThumbnail
SEQ-FP-LDPLISST-Deep 4000 m Sediment Size Distribution Sensor
1 um to 500 um size range
4000 m depth rating.
Includes:
-1 GB of memory
-2 m communications cable
-Laser cable
-Pelicase with custom foam cushioning.
-Includes Windows software for programming, data offload and data analysis.
NOTE: The LISST-Deep is designed for external power only. It has no internal batteries.
External Battery Housing for LISST-Deep available separately.
*Must order power cable separately.		LISST-Deep promo photo
SEQ-AC-LDP-EW1-YEAR EXTENSION OF LIMITED WARRANTY AND LIABILITY
Must be purchased together with new instrument.		No picture
SEQ-AC-LDP-SERV3-YEAR SERVICE PLAN
One-time service of instrument within 36 months after delivery.
Includes one-way return shipping from Sequoia, all evaluation, diagnosis, testing and calibration.
Parts and labor for repairs not included.
Must be purchased together with new instrument.
NOTE: End-user responsible for return shipment DDP to Sequoia.		No picture

LISST-Deep Accessories *NOT INCLUDED* with LISST-Deep

Item #DescriptionThumbnail
SEQ-AC-LDP-EBPExternal battery housing for LISST-Deep
Depth rating 4000 m. One installed and one spare LISST-Deep battery (SEQ-AC-LDP-BAT). Includes stands, clamps and cables for connecting to LISST-Deep.
Ships in Pelican case with custom foam cushioning.		LISST-DEEP External Battery Pack and Shipcase
SEQ-AC-LDP-SCBL-AALISST-Deep to CTD cable
Replacement 2 m cable with Impulse AG206-FS on each end wired pin to pin. Used to connect LISST-Deep to SeaBird CTD Auxiliary input with Impulse AG-306-HP-SS bulkhead connectors.
SEQ-AC-LDP-BATReplacement alkaline battery for LISST-Deep
12 V. Non-rechargeable.		LISST-Deep Battery
SEQ-AC-LDP-FRMLISST-Deep frame for easy integration into CTD frame.COMING!

LISST-Deep Accessories *INCLUDED* with LISST-Deep

Item #DescriptionThumbnail
SEQ-AC-LDP-BCS50 cm cable to external battery housing.
SEQ-AC-LDP-LCBLReplacement LISST-Deep Laser Cable
Replacement 0.65 m cable with Impulse MCIL-6-FS on each end wired pin to pin with locking sleeves. Used to connect laser end of LISST-Deep to electronics end of LISST-Deep.

FAQ

Can I rent the LISST-Deep?

Sequoia has a LISST-Deep v4 available for rent. This is rated to 3,000 m and functions like a LISST-100X type C (2.5 um to 500 um size range) using the LISST-100X software.

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

Apart from the obvious differences in the mechanical design, the LISST-Deep differs from the LISST-200X mainly with respect to available accessories. For the LISST-Deep, only a frame and an optional external battery housing are available.

Is there a BioBlock option for the LISST-Deep?

No. Sequoia does not offer a BioBlock option for the LISST-Deep.