B.2.3 DERIVED PARAMETERS
Derived parameters like: Salinity, Sound Speed, Pressure to Depth Conversion, Theta, Sigma T, etc. are
obtained using the algorithms described in the UNESCO technical papers in marine science no. 44
"Algorithms for computation of fundamental properties of sea water".
B.4 SENSOR LOGICAL CODE TABLE
The following logical code table shows the most common sensors and derived parameters. A complete
list of the sensor logical codes can be found in the “Ocean Seven 3xx Data Transmission Protocol”
document.
Description Logical code
Pressure 0
Temperature 1
Conductivity salt waters 2
Conductivity fresh waters @20°C 3
Salinity (UNESCO FORMULA) 4
Dissolved Oxygen ppm 5
Dissolved Oxygen % 6
pH 7
Redox 8
Dissolved Oxygen ppm (UNESCO FORMULA) 9
Fluorometer 11
Transmissometer CSTAR 12
Sound Velocity (UNESCO FORMULA) 16
Depth (UNESCO FORMULA) 20
Sigma T (Density UNESCO FORMULA) 22
Turbidity Meter 24
PAR – generic 25
Potential Temperature (THETA) 44
Conductivity fresh water @25° 80
Conductivity fresh water 89
PAR – QSP200L 99
Rhodamine 112
Sea bed contact 113
ECO FLRT Chl-a 114
ECO FLRT CDOM 115
ECO FLRT SCATTER 116
ECO FLRT Phycocyanin 117
ECO FLRT PycoErithrin 118
ECO FLRT RHODAMINE 119
ECO FLRT URANIN 120
OBS 3LR 121
OBS 3HR 122
EH –Standard Horiba 124
Cyclops #1 201
Cyclops #2 202
TRILUX/UNILUX PHYCOERITHRIN 212
TRILUX/UNILUX PHYCOCYANIN 213
TRILUX/UNILUX FLUOROSCEIN 214
TRILUX/UNILUX CHL-a 215
TRILUX/UNILUX TURB 216
TRILUX/UNILUX CDOM 217
High Precision pressure transducer 252
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