6.3 Seapoint OBS Information The following Seapoint OBS sensors were utilised for this work:‐


11161 13364


A sensor was used with only one AWAC for multiple deployments, thus maintaining “matched pairs”. The AWAC‐to‐OBS cable was wired to use the 20x gain setting of the OBS sensor, which gave a nominal range of 0 to 125 FTU.


The OBS sensors were fitted to the MiniLander in a plastic clamp ensuring that the sensor window had an unobscured view into the water column. In addition, they were fitted with Zebra‐Tech Hydro‐ Wipers to help minimise biofouling of the optical windows.


The specification sheet is shown below. It should be noted that because the OBS sensors were calibrated using the flume tank, the calibrations provided here to convert voltage to FTU were not used to provide the final outputs of suspended sediment concentrations in milligrams per litre.


EAST ANGLIA THREE – CEFAS FINAL TECHNICAL REPORT


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