Microloggers
These marine environmental data loggers
are designed to monitor the suspended sediment climate for
long durations. It uses high sampling frequency with long
sample bursts.
Complimentary pressure (tides and waves), temperature and
conductivity sensors enable a full interpretation of the suspended
sediment time series. Other auxiliary sensors, for
example oxygen or a fluorometer, can be added.
Specification
| Sensor |
Time constant |
Range |
Accuracy |
Resolution |
| Seapoint OBS |
0.1 s |
0 - 25FTU |
2% (Linearity) |
0.005 FTU |
| |
0.1 s |
0 - 125 |
|
0.025 FTU |
| |
0.1 s |
0 - 500 |
|
0.1 FTU |
| |
0.1 s |
0 - 750 |
|
0.5 FTU |
| Conductivity |
10 ms |
0 - 64 mmho/cm |
± 0.025 mmho/cm |
0.02 mmho/cm |
| Temperature |
1 s |
0 to 30 °C |
± 0.05 °C |
0.01 °C |
| Pressure |
100 ms |
90 m |
± 0.2 m |
10 mm |
| Roll and pitch |
200 ms |
± 90° |
± 2° |
0.05° |
| Duration |
up to two months |
| Memory |
30 Mbytes (upgradeable to 48
Mbytes) |
| Typical sampling regime |
Four sensors at 1 Hz for 15
minutes each half hour; burst interval can be controlled by the
user |