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RS485 Output Online Chlorophyll Water Quality Sensor Fluorescence Method Digital Monitoring Probe

The RS485 fluorescence chlorophyll sensor adopts advanced fluorescence technology and is designed specifically for online water quality monitoring. Built in self-cleaning brush head, effectively preventing biological attachment and achieving maintenance free long-term operation. Supports MODBUS-RTU protocol and can directly output chlorophyll-a concentration data. The IP68 protection level is suitable for freshwater, marine aquaculture, eutrophication monitoring of lakes and rivers, and water source warning. High precision 0-400ug/L range, plug and play, is an ideal choice for in-situ monitoring and environmental protection projects.


  • Model No.:

    ZW-CHL-PR(RS485)
  • Use:

    Monitor Chlorophyll
  • Power Supply:

    DC12/24V
  • Measuring Accuracy:

    ±3% of the reading
  • Certificates:

    CE,ROHS,FCC,ISO and 11 patents certifications
  • Customized Support:

    OEM, ODM
  • Warranty:

    1 Year
  • Product Detail
RS485 Output Online Chlorophyll Water Quality Sensor Fluorescence Method Digital Monitoring Probe


Introduction to ZONEWU RS485 Water Quality Chlorophyll Sensor:

This product is an online intelligent chlorophyll sensor designed for in-situ monitoring of chlorophyll-a concentration in surface water, water sources, aquaculture, and marine environments, using advanced fluorescence principles. It integrates high-precision measurement, self-cleaning maintenance, digital output, and robust protection, making it an ideal sensing unit for building a smart water and environmental monitoring system. Its core features are as follows:


  • High precision fluorescence detection
Built in high-sensitivity optical components can achieve precise measurement with a wide range of 0-500 µ g/L and a high resolution of 0.01 µ g/L by detecting the fluorescence intensity of chlorophyll molecules after excitation. No need for reagents or sampling, fast response, effectively avoiding environmental light interference, and reliable data.
  • Electric self-cleaning and anti fouling
In response to common biological attachment issues in long-term online monitoring, the probe is equipped with an electric self-cleaning brush that can automatically rotate at regular intervals and gently scrape the optical window, effectively preventing algae and sludge from adhering, greatly extending maintenance cycles, and reducing manual operation and maintenance costs. It is particularly suitable for high biological activity environments such as eutrophic water bodies.
  • Digital output plug and play
Adopting industrial grade RS485 interface and standard MODBUS-RTU protocol, it can directly output real-time chlorophyll concentration values (µ g/L or ppb), which is convenient for rapid integration with PLC, DTU, touch screen and various IoT acquisition terminals. Built in temperature compensation algorithm, automatically eliminates the influence of environmental temperature, ensuring long-term stability.
  • Durable and sturdy with IP68 protection
The whole machine adopts a stainless steel shell with a protection level of IP68, which can work stably for a long time in underwater environments of 10 meters or even deeper. Corrosion resistance, anti-aging, suitable for fresh water, sea water and other complex water bodies.
  • Widely applicable scenarios
Widely used in intelligent feeding and water quality warning in aquaculture, eutrophication investigation in rivers and lakes, algae monitoring in drinking water sources, marine ecological observation, and optimization of sewage/reclaimed water treatment processes, providing reliable data support for precise environmental management.




RS485/4-20 mA parameters:

Model

ZW-CHL-PR

Measuring Principle

Fluorescence Method

Measuring Range & Resolution

0~400.0 ug/L

0.1 ug/L

Accuracy

±3% of reading, ±0.3℃, linearity: 0.999 R²

Response Time (T90)

<30s

Minimum Detection Limit

1ug/L

Calibration Method

Two-point Calibration

Cleaning Method

None

Temperature Compensation

Automatic Temperature Compensation (Pt1000)

Output Signal

RS-485 (Modbus RTU), 4-20 mA (optional)

Storage Temperature

-5~65℃

Operating Conditions

0~50℃,<0.2 MPa

Housing Material

316L

Installation Method

Submerged Installation, 3/4 NPT

Power Consumption

0.2W@12V

Power Supply

12~24V DC

Protection Class

IP68






Packaging:

Single gross weight: 1.200 KG

Single package size: 37X26X5 cm

 

Product Description: 





Customer on-site examples: 




Application: 



  • Aquaculture: Monitor algae dynamics, warn of blue-green algae risks, and ensure the health of aquatic products.
  • Surface water monitoring: tracking eutrophication of rivers and lakes, supporting in-situ online environmental investigations.
  • Drinking water source: Real time control of algal biomass to ensure water supply safety.
  • Marine survey: Adapting seawater to assess the risk of red tide and primary productivity.


Certifications:


We are best water quality sensor manufacturer and exporter in China with more than 10 years. Our water quality sensor products are certified  with of CE, ROHS.

 

 

 

Why RS485 for Water Oxidation-Reduction Potential Monitoring?


Industrial-Grade & Stable Data Transmission: RS485 delivers robust anti-interference performance for real-time, reliable hardness data transmission in harsh environments (e.g., industrial boilers, municipal water supply), ensuring accurate monitoring.
Easy Integration & Scalability:
Supports multi-node networking, seamlessly integrates with mainstream PLC/RTU systems, enabling flexible deployment and reducing system integration costs and maintenance complexity.

 

 

Production Process:




Why choose us:


1. Strong R & D: 30+ Senior experts and highly educated personnel formed a R & D team, heavy investment, master a number of core technologies and patents.
2. Professional and effective solutions: for smart environmental protection, agriculture and other fields, to provide customized compound networking solutions.
3. Full range of products: covering the whole industry chain products from data collection to platform services to meet diverse needs.
4. Excellent quality: we have perfect quality control system, strictly quality control each production link, low defective rate. 
5. Good service: 7×24 hours fast response, Professional pre-sale, sale, after-sales team support.



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