Sequoia LISST-AOBS Super-Turbidity Sensor
Features
- Paired acoustic and optical technologies
- Near-constant calibration within a factor of two for grain-sizes from 1–500 µm
- Includes Y-cable providing power and integrated SDI-12 communication to and from both sensors
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The Sequoia LISST-AOBS is a simple, low-cost Super-Turbidity sensor that measures suspended sediment concentration (SSC; mg/l) and turbidity (V). The Sequoia Super-Turbidity sensor involves pairing a LISST-ABS with a turbidity sensor using a weight factor, which results in a single, combined output from the two sensors. Once paired, the LISST-AOBS retains near-constant calibration for SSC over a wide grain-size range.
Connectivity
The LISST-AOBS Super-Turbidity sensor is supplied by Sequoia as an integrated and paired turbidity and acoustic sensor with a variety of cabling and data logger options including the X3 data loggers and telemetry systems. The X3 is available for pole-mount deployments with solar charging or connected to the SBP500 submersible alkaline battery pack for subsurface deployments.
Parameters measured
- Suspended Sediment Concentration (SSC; mg/l)
Concentration range
- 1 – 30,000 mg/l (LISST-ABS)
Technology
- Combined optical and 8MHz acoustic backscatter technology
- Optics per ISO 7027 Turbidity Technique
- Mechanical wiper for optical backscatter
- SDI-12 output
- Sample volume (acoustic): 10mmØ x 15mmL @ 55mm from transducer
Mechanical and electrical
- 5.72 cm (2.25″) H x 10.16 cm (4″) W x 33.65 cm (13.25”) L
- Weight 0.7 kg (1.54 lb) in air
- Transducer: 8 mmØ ceramic
- Wavelength: 850 nm
- Power supply: 9-15 VDC (12VDC nominal); 75 mA
- Depth rating: 100 m
- Material: ABS plastic and Delrin
- (1) LISST-ABS acoustic sediment sensor
- (1) Turbidity Plus turbidity sensor
- (1) LISST-AOBS Y-cable
- (1) LISST-AOBS connecting bracket
Select Options
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