LISST-HAB

HARMFUL ALGAE BLOOM (HAB) INSTRUMENT

The LISST-HAB is a self-contained, stand-alone instrument system for use on profiling packages, towed and remote vehicle applications, for deployment during a HAB event. The system will continuously measure particle size distribution and concentration, along with the fluorescence of Phycocyanin, Phycoerythrin, Chlorophyll, and Beam Attenuation.

• Particle Size Distribution

• Volume Concentration

• Phycocyanin

• Phycoerythrin

• Chlorophyll

• Beam Attenuation

Specifications

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°C resolution; Response time: 2.5 s.

Optical transmission @ 0.1% resolution

Volume Concentration @ 0.1μl/l resolution

Beam transmission from 0.3-0.99 (30-99%)

Phycocyanin (freshwater HAB’s)

Phycoerythrin (marine HAB’s)

Chlorophyll

Operating Concentration range

Optical transmission from 0.3-0.99 (30-99%)

Concentration from ~ 0.5-700 mg/l (particle-size dependent)

Fluorometer ranges

Minimum

Detection Linear

Range

Phycocyanin

Phycoerythrin

Chlorophyll 0.03 ug/l 0-500 ug/l

Technology (laser diffraction)

Small-angle forward scattering

32-ring custom photodiode Ring Detector + 4 large angle detectors

25 mm optical path

Mechanical and Electrical

Dimensions: 63.9 cm (25.2”) L x 10.03 cm (3.95”) Ø

Weight: 6 kg (13.2 lbs) in air; 2.5 kg (5.5 lbs) in water

600 m depth rating

External power input: 12VDC nominal, 8-24 VDC

Sampling rate: Up to 1 Hz

Current drain at 12 V: 100 mA sampling, 8 mA between samples.

Data storage: 1GB (~12,500,000 measurements)

Connectors: S/S Impulse MCBH(WB)-3-MP, MCBH(WB)-5-MP, MCBH(WB)-6-MP

Laser: 670 nm solid state diode laser

Chlorophyll – EX 465 nm, EM 496 nm

Phycocyanin – EX , EM

Phycoerythrin – EX , EM

Features

Complete package based on Small Angle Forward Scattering Laser Diffraction Technology

Measures Particle Size and Concentration in 36 Size Classes

Integrated with Turner Designs Cyclops-7F fluorometers engineered to detect Phycocyanin (freshwater HAB’s), Phycoerythrin (marine HAB’s), and Chlorophyll

Internal programmable datalogger

Small and Extended Battery Packs available for self-contained operation

USB connection to PC for programming, offloading and real-time size distribution displays

Programmable, autonomous data collection

Integrated Depth and Fast Response Temperature Sensors

Towable or integrated on profiling package or vehicle

Fluorometer Performance

The Turner Designs submersible instrumentation modules used in the LISST-HAB includes single-channel fluorometers for detection of chlorophyll, freshwater and marine HAB’s. Together with particle information from the LISST, this package solution provides a comprehensive picture of a HAB and its development.