How do I choose the right online water quality sensor?
The right sensor depends on the water body, monitoring goal and installation environment. For basic water quality, pH, dissolved oxygen, conductivity and turbidity are commonly selected. For pollution tracking, COD and ammonium nitrogen are often used. For lake and reservoir algae warning, chlorophyll and blue-green algae sensors are more suitable. Before selecting a sensor, it is helpful to confirm the water type, expected measuring range, output signal, cable length, installation method and whether the sensor will connect to a PLC, data logger or IoT gateway.
Which water quality parameters can YexSensor measure?
YexSensor can provide online sensors for pH, ORP, dissolved oxygen, conductivity, turbidity, COD, ammonium nitrogen, suspended solids, chlorophyll, blue-green algae, salinity and other common water quality parameters. Different projects may require different sensor combinations. For example, aquaculture monitoring often focuses on DO, pH and ammonium nitrogen, while river monitoring may focus on turbidity, COD, conductivity and dissolved oxygen. The final configuration should match the real monitoring objective instead of simply using the same sensor list for every project.
What is the difference between COD, BOD, TOC and turbidity sensors?
COD, BOD, TOC and turbidity are related to water pollution, but they do not measure the same thing. COD reflects the oxygen demand of oxidizable substances and is commonly used for organic pollution screening. BOD is associated with biodegradable organic matter, usually measured in laboratory or estimated by specific instruments. TOC focuses on total organic carbon. Turbidity measures light scattering caused by suspended particles. In online monitoring projects, COD and turbidity are often used together because one helps track organic pollution and the other shows suspended matter changes.
Can one sensor measure multiple water quality parameters?
Yes, a multi-parameter water quality sensor can integrate several parameters in one device, such as pH, dissolved oxygen, conductivity, turbidity and temperature. This is useful for river, lake, reservoir and environmental monitoring projects where installation space is limited. However, a multi-parameter sensor does not replace every specialized sensor. If the project needs COD, ammonium nitrogen, chlorophyll or blue-green algae monitoring, dedicated sensors may still be required. YexSensor can recommend either single-parameter sensors or an integrated configuration according to the project requirements.
What information should I provide before requesting a quotation?
To receive an accurate recommendation, please provide the water type, monitoring parameters, measuring range, output signal, cable length, installation depth, power supply, communication method and application scenario. Photos of the installation site are also helpful. For example, a river monitoring station, wastewater outlet, aquaculture pond and drinking water reservoir may require different sensor materials, protection methods and cleaning plans. Clear project information helps YexSensor recommend the correct sensor model and avoid unnecessary cost.
