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Accurate, Rugged
For high sediment concentrations
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The OBS-5+ monitors high sediment concentrations using an infrared laser and a proprietary dual photo-detection system (U.S. Patent No. 5,796,481). The probe transmits sediment concentration and depth to a PC via an RS-232 or RS-485 link. Data are also stored internally.

The OBS-5+ is ideal for monitoring dredging and site-remediation operations, determining dredge efficiency, providing data for sediment transport research, and supporting undersea mining and trenching.

Benefits and Features

  • Connects directly to a PC—no datalogger needed
  • Operates up to six months on three C-cell batteries
  • Monitors high sediment concentrations (up to 200g/l)
  • Records 200,000 scans of data in the OBS-5+ flash memory