The C-Star incorporates a novel monolithic housing
with a highly integrated opto-electronic design to
provide a low cost, compact solution for
underwater measurements of beam transmittance.
The instrument is designed to operate by
submersion or with an optional flow tube for
pumped applications. It can be used in profiling,
moored, or underway applications. The C-Star’s
analog output allows easy interfacing to a wide
variety of small battery-powered CTDs and
loggers. A digital model is also available. The 25-
cm pathlength C-Star can be built in aluminum or
co-polymer plastic. The 10-cm pathlength C-Star is
available in plastic only.
| Specifications |
| Length |
25cm path |
47 x 6.4 x 9.3 cm |
Power input |
7~15 VDC |
| 10cm path |
29.2 x 6.4 x 9.3 cm |
Current draw |
<40mA(analog) <80mA(digital) |
| Weight |
Plastic |
2.2kg in air, 0.9kg in water |
Data output |
0~5 volts (analog), 0~4095 count (digital) |
| Aluminum |
3.6kg in air, 2.7kg in water |
Time constant |
0.167 sec |
| Pathlength |
25 or 10 cm |
Temperature error |
0.02 % F.S./°C |
| Wavelengths |
370, 470, 530, 660 nm |
Rated depth |
600m (plastic), 6000m (aluminum) |
| Bandwidth |
470, 530, 660 nm |
~ 20nm |
Temperature |
0~30 °C |
| 370 nm |
~ 10~12nm |
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