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The OBS-3+ and OBS300 Turbidity Sensors are fully submersible and use the optical backscatter method to measure light transmission in the sampled water to provide measurement of suspended solids and turbidity for up to 4000 NTUs.
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This multi-parameter system measures sediment to 5000 mg/l, turbidity to 4000 NTUs and also measures and logs wave height & period, depth, temperature and salinity.
This probe is used for high sediment concentrations and uses a laser and dual photo detector system to measure concentrations of up to 50,000 mg/l, the system also records the probes depth. Stores up to 200,000 measurements on internal flash memory and can run for up to 6 months on 3 alkaline C cells
The OBS500 combines a backscatter sensor (better at measuring high turbidity) with a second sidescatter sensor (better at measuring lower turbidity). This SDI-12 probe uses digital processing
All of our marine instruments and systems, meteorological instruments, calibration standards and rental equipment can also be found in our new product catalogue
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OBS500 Turbidity Probe with Antifouling
OBS-3A Multi-Parameter Turbidity System
OBS- 5+ Sediment & Pressure Measurement System
OBS-3+ and OBS300 Turbidity Sensors