Instrument: Sea Tech Transmissometer

Dataset: 
bio_optics
Instrument: 
Sea Tech Transmissometer
Instrument Short Name: Sea Tech Transmissometer
Community Standard Description
(http://vocab.nerc.ac.uk/collection/L22/current/TOOL0003/)
Instrument Description:

The Sea Tech Transmissometer can be deployed in either moored or profiling mode to estimate the concentration of suspended or particulate matter in seawater. The transmissometer measures the beam attenuation coefficient in the red spectral band (660 nm) of the laser lightsource over the instrument's path-length (e.g. 20 or 25 cm). This instrument designation is used when specific make and model are not known. The Sea Tech Transmissometer was manufactured by Sea Tech, Inc. (Corvalis, OR, USA).

PI supplied instrument name: SeaTech Transmissometer
Dataset-specific description

A Sea Tech transmissometer (660 nm) was used to measure the extinction coefficient of the atmosphere, and for the determination of visual range. The windows on the Sea Tech transmissometers will be cleaned with lens cleaner and a tissue, then rinsed with distilled water, and finally rinsed with isopropyl alcohol and wiped dry. Cleaning of the windows and reading of these ``on-deck air calibrations' will be performed before each cast to verify that the windows are clean.