Inline turbidity sensor is an in-line installed water quality monitoring device, directly mounted on pipeline to continuously and real-time measure water turbidity, reflecting suspended solids, sediment, algae and particulate matter content in liquid.

MTW-TU5000 Inline Turbidity Sensor is a professional pipe-installed water quality probe for real-time continuous turbidity measurement.Based on infrared scattering optical principle, it delivers stable and accurate NTU data, effectively avoiding light interference.

This inline sensor features compact inline structure, easy pipeline threading and installation.It supports automatic temperature compensation, standard RS485 MODBUS-RTU digital output and optional 4-20mA analog signal, compatible with controllers, PLC and upper monitoring system.

With anti-fouling optical window and corrosion-resistant housing, it realizes long-term stable operation in water supply pipelines, filtration systems and industrial process pipelines.

Working Principle

Main adopt infrared 90° scattered light method / 75° scattered light principle
Comply with ISO 7027 standard
Infrared light emits into water; suspended particles scatter light, the receiver detects scattered light intensity and converts it into turbidity value
Built-in temperature compensation, eliminate temperature interference

Key Features

Pipe inline installation, no water tank required
Fully submerged in pipeline, continuous online monitoring
Anti-fouling design, optional automatic cleaning brush
High precision, long-term stable operation
Corrosion-resistant, suitable for industrial harsh water

Product Features

1.0.6MPa pressure-resistant flow channel, minimizing bubble formation.
2.Sealed water path for efficient sample recovery.
3.Compact design with a height of only 131mm, ideal for system integration.
4.Self-cleaning optical window for extended maintenance cycles.
5.Customizable design to meet specific structural requirements.
6.Waterproof and dustproof, meeting IP68 standards.
7.90° laser scattering method for highly accurate measurements.
8.Dual outputs: RS485 and 4-20mA for versatile applications.

Technical Specifications

Parameter	Description
Operating Voltage	DC 9–28V
Peak Power Consumption	5W
Detection Method	90° light scattering method
Light Source	660nm laser
Measuring Range	0–1/20/100/2000 NTU
Resolution	0.0001 NTU (<1 NTU), 0.001 NTU (≥1 NTU)
Lower Detection Limit	0.005 NTU
Accuracy	0–100 NTU: 2% or ±0.02 NTU (whichever is greater); 0–2000 NTU: ±0.5 NTU (whichever is greater) (based on Formazin primary standard at 25°C)
Operating Temperature	-5 to 45°C
Operating Mode	Pressurized flow-through type
Sample Pressure	Standard: ≤0.6 MPa; Custom: ≤1.0 MPa or higher
Sample Flow Rate	100–1000 mL/min (recommended: 500 mL/min)
Housing Material	ABS
Digital Output	RS485 Modbus protocol (4-core waterproof connector)
Analog Output	Standard 4–20mA (6-core waterproof connector)
Dimensions (6mm tubing)	192mm × 125mm × 78mm (W × H × D, including fittings)
Dimensions (10mm tubing)	200mm × 131mm × 78mm (W × H × D, including fittings)