The PRE8300-TUR Turbidity Sensor represents a significant advancement in online monitoring for drinking water quality, utilizing patented technology with independent intellectual property rights. Based on the 90° light scattering detection principle, it features a unique photoelectric receiving structure and an automatic temperature and light compensation method, greatly enhancing detection precision and accuracy.
The PRE8300-TUR turbidity sensor is a cutting-edge device tailored for online water quality monitoring in both municipal and industrial applications. It excels in turbidity measurement through high-resolution laser detection, delivering reliable performance across a wide measurement range. This sensor is engineered to operate continuously with minimal maintenance, offering digital output via Modbus for seamless integration.

Utilizing a 660nm laser, the PRE8300-TUR ensures high-precision turbidity measurement, especially in low-NTU environments. This laser-based design minimizes measurement drift and enhances repeatability.
The unique waterway structure prevents sediment buildup, supporting consistent performance and reduced maintenance requirements. It also incorporates integrated defoaming for air bubble management.
The sensor communicates via RS485 using the Modbus-RTU protocol, and an optional 4–20mA output is also available, supporting various SCADA or PLC systems.
| Item | Specification |
|---|---|
| Power Supply | DC 24V |
| Power Consumption | 5W |
| Detection Method | 90° laser light scattering |
| Light Source | 660nm laser |
| Measuring Range | 0–1 NTU / 0–20 NTU / 0–100 NTU |
| Resolution | 0.0001 NTU (<1 NTU), 0.001 NTU (≥1 NTU) |
| Minimum Detection Limit | 0.005 NTU |
| Zero Drift | ≤ 1.5% |
| Stability of Reading | ≤ 1.5% |
| Accuracy | ±2% or ±0.02 NTU (whichever is greater) |
| Repeatability | 1% or 0.006 NTU (whichever is greater) |
| Response Time | ≤120 seconds |
| Operating Temperature | -5°C ~ 45°C (with built-in temperature sensor) |
| Protection Level | IP65 |
| Dimensions | 174mm × 269mm × 99mm (W × H × D) |
| Material | Anti-corrosion composite materials |
| Waterway Interface | Inlet: 6mm hose, Outlet/Sewage: 10mm hose |
| Recommended Inlet Flow Rate | 500 mL/min (Range: 100–1000 mL/min) |
| Communication Interface | RS485 Modbus-RTU, Optional 4–20mA |
Designed for continuous online water quality monitoring of tap water, secondary supply systems, and terminal pipes. Its low detection threshold is ideal for drinking water safety.
Applicable in turbidity measurement of process water, beverage production, swimming pools, and membrane-filtered water systems where accuracy is critical.
Laser Precision: Guarantees consistent readings down to 0.005 NTU.
Maintenance-Free Operation: Dirt-resistant design with long intervals between cleanings.
Flexible Calibration Options: Supports single-point, two-point, and three-point calibration via Modbus registers.
Easy Integration: Standard RS485 Modbus interface plus analog output.
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