HABs Detection System
Harmful algal blooms (HABs) are an issue associated with eutrophication, or presence of excess nutrients in a body of water. Rapid growth of organisms like cyanobacteria under such conditions can deplete oxygen levels, increase stratification, and produce toxins that in severe cases can cause fish kills, disrupt drinking water supplies and harm humans and animals. Automated monitoring can help track HABs and predict when potentially hazardous conditions are forming.
HABs Detection System
Since excess nutrients are a driving factor for the outbreak of harmful algal blooms, an effective HAB detection system should be able to accurately monitor relative nutrient loads. Other factors such as water temperature and oxygen levels can also help to predict when conditions are forming for an outbreak and to evaluate the effects and efficacy of mitigating measures.
NexSens HAB detection systems may include a wide range of sensors connected to a mast-mounted or buoy-mounted X2 data logger. The X2 supports the TriOS NICO UV nitrate sensor for long-term monitoring of nitrate concentrations with minimal maintenance. Blue-green algae sensors like those from YSI, Turner Designs, Eureka and In- Situ can directly measure algae concentrations in both freshwater and saltwater and can be incorporated into multisensor sondes that can additionally be equipped with pH, dissolved oxygen, turbidity and other sensors.
When deployed from a floating platform such as the NexSens CB-450 data buoy, a system may also include a T-Node FR or TS210 temperature profiling string for measuring temperature gradients in the water column. Weather conditions like air temperature, solar radiation and precipitation can optionally be reported with a topside weather station. Light conditions below the surface can be monitored using underwater PAR (photosynthetically active radiation) sensors as well.
Regardless of system configuration, the X2 transmits data wirelessly in real-time via radio, cellular or satellite communications to the WQData LIVE web datacenter for data viewing and management. In a basic configuration, this free service allows users to securely access and analyze data, as well as share data through auto-reports. Subscription-based tiers of WQData LIVE are also available for advanced reporting, alarming, and data sharing including automated export, API and public portal options.
Contact a NexSens Applications Engineer today to discuss your HABs detection application.
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