Introduction
This industrial-grade water quality Blue Green Algae 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 measuring cyanobacteria concentration in water, with a measurement range of 0-300,000 cells/ml, a resolution of 1 cell/ml, and an accuracy of ±5% FS. The sensor utilizes a fiber optic light path design and incorporates a filtering algorithm, providing strong resistance to external light interference.

The Blue Green Algae sensor is equipped with an RS485 communication interface and supports 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 testing environment and real-time data monitoring. It features a built-in temperature sensor with automatic temperature compensation, ensuring accurate and reliable data output under varying environmental conditions.

The Blue Green Algae sensor is rigorously calibrated before leaving the factory and is ready for use upon arrival, requiring no further calibration. It has an overall waterproof rating of IP68, allowing for long-term submersion in water, making it suitable for algae research and monitoring in rivers, lakes, and ponds.

Features
Measurement range: 0~400 μg/L, resolution: 0.1 μg/L, accuracy: ±5% FS
Integrated probe housing design, waterproof rating up to IP68
Fluorescence principle with filtering algorithm, strong resistance to external light interference
Built-in temperature sensor, automatic temperature compensation to ensure measurement accuracy
RS485 communication interface, supports ModBus-RTU protocol
Applications
Harmful Algal Bloom (HAB) Early Warning: Deployment in municipal reservoirs to detect dangerous cyanobacteria spikes before they impact water treatment facilities.
Aquaculture Management: Continuous monitoring of commercial fish ponds and shrimp farms to optimize water oxygenation and filtration systems.
IoT Ecological Research: Integration with LoRaWAN nodes for remote, long-term hydrological data logging in rivers, lakes, and estuaries.
Specification
Power Supply Voltage: 10~30V DC
Power Consumption: 0.4W
Communication Interface: RS485 (Standard ModBus-RTU protocol)
Measurement Range:
Cyanobacteria: 0~300,000 cells/ml
Temperature: 0°C~+60°C
Measurement Accuracy:
Cyanobacteria: ±5%FS (25℃)
Temperature: ±0.5°C
Resolution:
Cyanobacteria: 1 cell/ml
Temperature: 0.1°C
Linearity: R²>0.999
Temperature Compensation Range: 0°C~+60°C
Response Time: ≤30S
Operating Temperature: 0°C~+40°C
Measurement Principle: Fluorescence method
Waterproof Rating: IP68
Pressure Resistance: 0.6MPa
Cable Length: 5m
Housing Material: Corrosion-resistant plastic
Shipping List
RS485 Water Quality Blue-Green Algae Sensor x1
5m Sensor Cable x1