{"title":"DFRobot SEN0713 RS485 Chlorophyll Water Quality Sensor","handle":"factory-calibrated-rs485-water-quality-chlorophyll-sensor-for-real-time-algae-monitoring","url":"/products/factory-calibrated-rs485-water-quality-chlorophyll-sensor-for-real-time-algae-monitoring","description":"This industrial-grade chlorophyll sensor measures chlorophyll concentration in water using the fluorescence principle, making it useful for algae monitoring in rivers, lakes, ponds, aquaculture systems and field research sites.The probe and housing are integrated into a single waterproof unit, with fibre optic light transmission and internal filtering algorithms to help resist external light interference. It outputs both chlorophyll and relative fluorescence intensity data, so readings can be analysed against real-world water conditions.Communication is via RS485 using the standard ModBus-RTU protocol, with tutorials provided for connecting to Arduino development boards and DFRobot LoRaWAN systems. A built-in temperature sensor provides automatic temperature compensation, and the sensor is factory calibrated so it is ready to use without further calibration.Included in the box is the RS485 Water Quality Chlorophyll Sensor x1 and 5m sensor cable x1.Features:Measurement range: 0~400 μg/LResolution: 0.1 μg/LAccuracy: ±5% FSIntegrated design: Integrated probe housing designWaterproof rating: up to IP68Measurement principle: Fluorescence principle with filtering algorithmLight interference resistance: Strong resistance to external light interferenceBuilt-in temperature sensor: Built-in temperature sensorTemperature compensation: Automatic temperature compensation to ensure measurement accuracyCommunication interface: RS485 communication interfaceProtocol support: supports ModBus-RTU protocolSpecifications:Power Supply Voltage: 10~30V DCPower Consumption: 0.4WCommunication Interface: RS485 (Standard ModBus-RTU protocol)Measurement Range - Chlorophyll: 0~400 μg/LMeasurement Range - Fluorescence Intensity: 0~100 RFUMeasurement Range - Temperature: 0°C~+60°CMeasurement Accuracy - Chlorophyll: ±5%FS (25℃)Measurement Accuracy - Fluorescence Intensity: ±5%FS (25℃)Measurement Accuracy - Temperature: ±0.5°CResolution - Chlorophyll: 0.1 μg/LResolution - Fluorescence Intensity: 0.1 RFUResolution - Temperature: 0.1°CTemperature Compensation Range: 0°C~+60°CResponse Time: ≤30SOperating Temperature: 0°C~+40°CMeasurement Principle: Fluorescence methodWaterproof Rating: IP68Pressure Resistance: 0.6MPaCable Length: 5mHousing Material: Corrosion-resistant plasticSuitable for algae bloom early warning, aquaculture pond monitoring, university field labs and long-term watershed research where RS485 data collection is required.","vendor":"DFRobot","product_type":"Water Quality Sensor","in_stock":true,"options":[],"variants":[{"id":15660,"title":"Default Title","sku":"DF-SEN0713","mpn":"SEN0713","price":1312.85,"on_sale":false,"in_stock":true,"available_quantity":5}]}