Blog
- Adapting Optical Backscatter Sensors for Mining Tailings SlurriesMining tailings streams are among the most demanding environments for optical water-quality instrumentation. The fluid may contain a dense mixture of finely…
- Selecting Turbidity Sensors for Deep Ocean ExplorationDeep-ocean exploration places unusual demands on water-quality instrumentation. A turbidity sensor must measure suspended particles in darkness, tolerate high…
- Groundwater Profiling for Detecting Landfill Leachate PlumesLandfill leachate forms when rainwater and groundwater move through waste and dissolve or carry contaminants into the surrounding subsurface. The resulting…
- Accounting for Nonlinear Response in High-Range Turbidity MeasurementsTurbidity instruments are often easiest to understand near the middle of their working range. At low concentrations, a small increase in suspended material can…
- Using Suspended-Solids Sensors to Measure Hydrocyclone EfficiencyHydrocyclones separate particles from water by using centrifugal force. Feed slurry enters tangentially, creating a vortex that drives denser or coarser solids…
- Optical Sensor Cleaning Regimes for Biofouling Control in Nutrient-Rich WatersNutrient-rich rivers, estuaries, reservoirs, and coastal waters can produce excellent conditions for algae, bacteria, fungi, and organic deposits. Those…
- Reliable turbidity telemetry from remote Arctic catchmentsRemote Arctic catchments are difficult places to observe water quality. Streams may be separated by hundreds of kilometres of roadless terrain, access windows…
- Groundwater Profilers for Long-Term Lake Sediment ResearchLake sediments are active parts of freshwater ecosystems rather than passive storage layers. Oxygen, nutrients, dissolved metals, organic carbon, and…
- Building Reliable Sediment Calibration CurvesSuspended-solids sensors estimate the concentration of particles in water by measuring how those particles interact with light. The instrument may report…
- Mounting Turbidity Sensors on Autonomous Underwater VehiclesAn autonomous underwater vehicle (AUV) can transform turbidity monitoring from a series of isolated samples into a detailed three-dimensional view of suspended…