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Blog - 6
Turbidity & suspended solids instrumentation, historically based in Port Townsend, WA Product line now supported through Campbell Scientific, Inc.
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D & A Instruments
Turbidity monitors & water-quality instrumentation

Blog

  1. Tracking flocculation dynamics in estuarine turbidity maximaEstuarine turbidity maxima are zones where suspended sediment concentrations remain unusually high because river discharge, tidal pumping, salinity-driven…
  2. Groundwater profiler applications for assessing hyporheic exchangeThe hyporheic zone is the active boundary beneath and beside a river where surface water and groundwater mix through sediment. Water may enter the riverbed,…
  3. Integrating Optical Backscatter Sensors Into Watershed TelemetryWatershed monitoring in Australia often depends on instruments installed far from laboratories, mains power and reliable mobile coverage. An optical…
  4. Choosing the right turbidity or suspended-solids sensorWater-quality monitoring often begins with a simple decision: should the project measure turbidity, suspended solids, or both? The answer depends on what the…
  5. Optical sensor drift detection in water quality monitoringOptical instruments used for turbidity and suspended-solids monitoring can deliver stable data for months, then gradually begin to report a biased result. The…
  6. How Suspended-Solids Sensors Guide Dredged Material PlacementDredging creates a moving water-quality problem. Excavation loosens sediment, transport carries it away from the work face, and placement can release a plume…
  7. Designing a Mooring System for Turbidity Monitoring in Strong Tidal CurrentsLong-term turbidity monitoring in a tidal estuary, dredging corridor or coastal inlet is a mechanical design problem as much as an instrumentation problem. A…
  8. Field validation of turbidity sensors with bottle samplingTurbidity sensors provide a continuous view of changing water conditions, while traditional depth-integrated bottle samples offer a physical sample that can be…
  9. Estimating suspended-sediment particle size with optical sensorsSuspended sediment is rarely uniform. A river plume may contain fine clay, mineral silt, organic fragments and coarse sand, with the mixture changing as flow,…
  10. How Air Bubbles Distort Optical Suspended-Solids ReadingsOptical suspended-solids sensors estimate the concentration of particles in water by measuring how light is scattered or absorbed within a sensing volume. This…