{"product_id":"factory-calibrated-rs485-water-quality-chlorophyll-sensor-for-real-time-algae-monitoring-df-sen0713","title":"Factory-Calibrated RS485 Water Quality Chlorophyll Sensor for Real-Time Algae Monitoring","description":"\u003cp\u003eThis industrial-grade chlorophyll sensor based on the fluorescence principle. The probe and housing are integrated into a single unit, resulting in a simple and convenient design. It is used for accurately \u003cb\u003emeasuring chlorophyll concentration in water\u003c\/b\u003e, with a \u003cb\u003emeasurement range of 0-400 μg\/L, a resolution of 0.1 μg\/L, and an accuracy of ±5% FS. \u003c\/b\u003eThe sensor outputs relative fluorescence intensity data, facilitating analysis of the relationship between fluorescence intensity and chlorophyll concentration based on actual conditions.  It utilizes a fiber optic light transmission design and incorporates internal filtering algorithms, providing strong resistance to external light interference.\u003c\/p\u003e\u003cp style=\"text-align: center; \"\u003e\u003cimg src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0713\/1.png\" alt=\"Overview of Factory-Calibrated RS485 Water Quality Chlorophyll Sensor\" title=\"Overview of Factory-Calibrated RS485 Water Quality Chlorophyll Sensor\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe chlorophyll sensor is equipped with an RS485 communication interface, supporting the standard ModBus-RTU protocol.  Tutorials are provided for connecting the sensor to Arduino development boards and DFRobot LoRaWAN, allowing for quick setup of a test environment and real-time data monitoring. A built-in temperature sensor provides automatic temperature compensation, ensuring accurate and reliable data output under varying environmental conditions.\u003c\/p\u003e\u003cp style=\"text-align: center; \"\u003e\u003cimg src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0713\/2.png\" alt=\"Measurement data of Factory-Calibrated RS485 Water Quality Chlorophyll Sensor for Real-Time Algae Monitoring\" title=\"Measurement data of Factory-Calibrated RS485 Water Quality Chlorophyll Sensor for Real-Time Algae Monitoring\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe chlorophyll sensor undergoes rigorous calibration before leaving the factory and is ready for use upon arrival, requiring no further calibration. With an overall waterproof rating of IP68, it can be submerged in water for extended periods, making it suitable for algal research and monitoring in rivers, lakes, and ponds.\u003c\/p\u003e\u003cp style=\"text-align: center; \"\u003e\u003cimg src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0713\/3.png\" alt=\"Detail of Factory-Calibrated RS485 Water Quality Chlorophyll Sensor for Real-Time Algae Monitoring\" title=\"Detail of Factory-Calibrated RS485 Water Quality Chlorophyll Sensor for Real-Time Algae Monitoring\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003ch2\u003eFeatures:\u003c\/h2\u003e\u003cli\u003eMeasurement range: 0~400 μg\/L, resolution: 0.1 μg\/L, accuracy: ±5% FS\u003c\/li\u003e\u003cli\u003eIntegrated probe housing design, waterproof rating up to IP68\u003c\/li\u003e\u003cli\u003eFluorescence principle with filtering algorithm, strong resistance to external light interference\u003c\/li\u003e\u003cli\u003eBuilt-in temperature sensor, automatic temperature compensation to ensure measurement accuracy\u003c\/li\u003e\u003cli\u003eRS485 communication interface, supports ModBus-RTU protocol  \u003c\/li\u003e\u003ch2\u003eApplications:\u003c\/h2\u003e\u003cli\u003e\n\u003cb\u003eFreshwater Algal Bloom Early Warning System: \u003c\/b\u003eDeploy the sensor in a lake or reservoir connected via RS485 to a shore-side data logger. Continuous chlorophyll tracking enables early detection of cyanobacteria blooms before they become visible — critical for drinking-water utilities and environmental agencies.\u003c\/li\u003e\u003cli\u003e\n\u003cb\u003eAquaculture Pond Health Monitoring: \u003c\/b\u003eIn shrimp or fish farming operations, chlorophyll spikes correlate with phytoplankton overgrowth that depletes dissolved oxygen overnight. Pairing this sensor with a DFRobot LoRaWAN gateway enables remote, real-time alerts — reducing fish mortality without manual sampling runs.\u003c\/li\u003e\u003cli\u003e\n\u003cb\u003eUniversity \u0026amp; STEM Field Lab: \u003c\/b\u003eEnvironmental science courses require students to collect real water-quality data. The sensor's plug-and-read design (no calibration needed) and Arduino-compatible RS485 interface allow students to focus on data analysis rather than instrument setup. A single afternoon is enough to build a working field station.\u003c\/li\u003e\u003cli\u003e\n\u003cb\u003eRiver \u0026amp; Watershed Long-Term Research: \u003c\/b\u003eMulti-site longitudinal studies demand sensors that survive months of continuous submersion. The IP68 \/ 0.6 MPa-rated corrosion-resistant housing and automatic temperature compensation ensure data consistency across wet and dry seasons without site visits for recalibration.\u003c\/li\u003e\u003ch2\u003eSpecification:\u003c\/h2\u003e\u003cli\u003ePower Supply Voltage: 10~30V DC\u003c\/li\u003e\u003cli\u003ePower Consumption: 0.4W\u003c\/li\u003e\u003cli\u003eCommunication Interface: RS485 (Standard ModBus-RTU protocol)\u003c\/li\u003e\u003cli\u003eMeasurement Range:\u003cbr\u003e       Chlorophyll: 0~400 μg\/L\u003cbr\u003e       Fluorescence Intensity: 0~100 RFU\u003cbr\u003e       Temperature: 0°C~+60°C\u003c\/li\u003e\u003cli\u003eMeasurement Accuracy:\u003cbr\u003e       Chlorophyll: ±5%FS (25)\u003cbr\u003e       Fluorescence Intensity: ±5%FS (25)\u003cbr\u003e       Temperature: ±0.5°C\u003c\/li\u003e\u003cli\u003eResolution:\u003cbr\u003e       Chlorophyll: 0.1 μg\/L\u003cbr\u003e       Fluorescence Intensity: 0.1 RFU\u003cbr\u003e       Temperature: 0.1°C\u003c\/li\u003e\u003cli\u003eTemperature Compensation Range: 0°C~+60°C\u003c\/li\u003e\u003cli\u003eResponse Time: ≤30S\u003c\/li\u003e\u003cli\u003eOperating Temperature: 0°C~+40°C\u003c\/li\u003e\u003cli\u003eMeasurement Principle: Fluorescence method\u003c\/li\u003e\u003cli\u003eWaterproof Rating: IP68\u003c\/li\u003e\u003cli\u003ePressure Resistance: 0.6MPa\u003c\/li\u003e\u003cli\u003eCable Length: 5m\u003c\/li\u003e\u003cli\u003eHousing Material: Corrosion-resistant plastic\u003c\/li\u003e\u003ch2\u003eProduct Includes:\u003c\/h2\u003e\u003cli\u003eRS485 Water Quality Chlorophyll Sensor  x1\u003c\/li\u003e\u003cli\u003e5m sensor cable                         x1\u003c\/li\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":42388493008978,"sku":"DF-SEN0713","price":1409.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/0383\/files\/SEN0713_Main_01.jpg?v=1777691632","url":"https:\/\/www.pakronics.co.nz\/products\/factory-calibrated-rs485-water-quality-chlorophyll-sensor-for-real-time-algae-monitoring-df-sen0713","provider":"Pakronics®","version":"1.0","type":"link"}