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Sequoia LISST-Tau Transmissometer
LISST-Tau is a high-precision transmissometer for underwater vehicles, profiling packages, CTDs, and remote monitoring systems.
Features
- Measures optical transmission and beam attenuation
- RS-232 and analog real-time outputs
- Integrated temperature compensation & ambient light rejection
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Fondriest Exclusives
- Expedited repair and warranty service
- Lifetime technical support
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Overview
LISST-Tau is a high-precision transmissometer for underwater vehicles, profiling packages, CTDs, and other systems. With high-quality optics and a carefully selected LED source, it transmits a collimated beam through the water, and precisely measures the light transmitted through its 15 cm path. Light modulation with synchronous detection rejects ambient light, while oversampling and averaging yield better than 16-bit resolution. LISST-Tau’s digital controller applies calibration coefficients, corrects for temperature effects, and transmits data from both digital and analog outputs. Included software provides real-time display of data, and functions for checking and updating pure-water calibrations. An optional flow-through chamber simplifies calibrations and experiments. LISST-Tau advances the state of the art for in-situ transmissometers.
Remote Monitoring
The LISST-Tau transmissometer offers a plug-and-play interface to the NexSens X3 data loggers and telemetry systems. The X3 is available for pole-mount/buoy-based deployments with solar charging or connected to the X3-SUB submersible data logger with alkaline battery pack for subsurface deployments.
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SEQ-FP-LTAU-532NM
LISST-Tau high-precision transmissometer, 532 nm (green) LED source
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SEQ-FP-LTAU-650NM
LISST-Tau high-precision transmissometer, 650 nm (red) LED source
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