GENEQ > Environment > Suspended Solids

Field-proven monitor of suspended solids and turbidity
Model OBS-5

  
FEATURES
  • Microprocessor-controlled laser system
  • Measures concentrations up to 100g/l (specific gravity 1.06)
  • Auxiliary pressure, temperature, and conductivity sensors
  • Serial data transmission via RS-232 link
  • Compact 60 mm (2.4") by 482 mm (19") package
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    APPLICATIONS
  • Monitor dredging & site-remediation operations
  • Survey contaminated sediment
  • Determine dredge-head and bucket-wheel efficiencies
  • Evaluate containment systems
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    DESCRIPTION
    The OBS-5® system monitors high particle concentrations using an infrared laser and two detectors controlled by a microprocessor (U.S. Patent No. 5,796,481). It is uniquely suited for monitoring dredging operations and flood events when very high sediment loads are expected. The probe transmits sediment concentration, turbidity, depth, temperature, and salinity to a PC where data are displayed and recorded. The monitor is operated with software running under Windows® 98, 2000, and XP.
    OPERATIONS
    Users can test and calibrate sensors, make pressure and water-density corrections, and set up sampling schedules using the software provided with the system. During a survey the OBS-5 data and instrument depth are displayed on a PC while being recorded. After a survey, data can be processed and graphically displayed using EXCEL or LOTUS.

    RANGE
    Concentration 0–100 g/l (sp. gr. 1.06)*
    Pressure 0–200 dBar**
    Temperature 0–400 C
    Conductivity 0–65 mS/cm

    * Ranges depend on sediment type.
    ** 1 dBar is equivalent to about 1 meter of water.

    ACCURACY
    Concentration Mud 5.0 mg/l
    Sand 0.5 g/l
    Pressure 0.1 dBar
    Temperature 0.050 C
    Conductivity 0.07 mS/cm

    OTHER DATA
    PC interface RS-232 / 19.2 kbps
    Maximum data rate 7 Hz
    Laser wavelength 780 nm
    Supply voltage 9–16 Vdc
    Battery life (2-Ah gel cell) 12 hours
    Housing Materials 316 stainless steel, and Hydex