NTU · Turbidity Sensor

M200 Turbidity Digital Sensor

The 90-degree scattered-light method measures turbidity across ranges from 0-1 to 0-2,000 NTU, with a 0.005 NTU detection limit and +/-2%FS accuracy. IP68 protection, light-shielded optics, and flow-through or submersion mounting support stable monitoring from pure water to wastewater.

Turbidity Sensor
2000 NTU
Max Range
0.005 NTU
Detection Limit
±2 %FS
Measurement Accuracy
IP68
Full protection · RS485
Features

Sensitive turbidity measurement from pure water to wastewater

A light-shielded 90-degree optical path limits stray-light interference. Multiple ranges and an optional self-cleaning structure provide stable, low-maintenance readings across different water types.

Advanced Circuitry

High StabilityOptical Circuit,Scattered SignalHigh-precision Acquisition,inhibitionstray light.

Easy Installation

Flow-through or submersion mounting with a light-shielded structure and standard cable.

Industrial-grade Protection

IP68 protection with an ABS+POM housing that resists weather and corrosion.

Fast Response

Fast optical response, optional self-cleaning structure, and low drift.

Model Selection

NTU Sensor Model Overview

The series supports multiple installation methods and water types. Filter by installation method, then add a model to your selection list or contact our engineers for verification.

M200-TU-01
RS485 Digital
Flow-through - Low Range
Range0–20 NTU
Measurement Principle90°Scattering
Detection Limit0.005 NTU
Housing MaterialABS+POM
Pure WaterDrinking WaterReverse Osmosis
M200-TU-02
RS485 Digital
Flow-through · General Purpose
Range0–100 NTU
Measurement Principle90°Scattering
Detection Limit0.005 NTU
Housing MaterialABS+POM
Tap WaterSecondary SupplyCirculating Water
M200-TU-03
RS485 Digital
Flow-through - High Range
Range0–2000 NTU
Measurement Principle90°Scattering
Detection Limit0.01 NTU
Housing MaterialABS+POM
WastewaterEffluentSurface WaterRiver Monitoring
M200-TU-04
RS485 Digital
Submersion · Open Channel
Range0–4000 NTU
Measurement Principle90°Scattering
Detection Limit0.01 NTU
Housing MaterialABS+POM
Open ChannelRiverLandscape Water
M200-TU-05
4-20mA Analog
Flow-through · Analog Output
Range0–100 NTU
Measurement Principle90°Scattering
Detection Limit0.005 NTU
Housing MaterialABS+POM
Tap Water PlantWater SupplyProcess monitoring
M200-TU-06
RS485 Digital
Submersion - With Self-cleaning
Range0–2000 NTU
Measurement Principle90°Scattering
Detection Limit0.01 NTU
Housing MaterialABS+POM
wastewater plantInfluentAquaculture
Specifications

Complete Specifications

General specifications for the series. Range, housing, and output vary by model and are confirmed during selection.

Measured Parameter
Turbidity(NTU)
Measurement Principle
90° Scattering(Optical)
Measuring Range
0–1 / 0–20 / 0–100 / 0–2000 NTU(stepped)
Resolution
0.01%
Detection Limit
0.005 NTU
Measurement Accuracy
±2.0%FS (low range) / ±10.0%FS (high range)
Temp. Measurement range
-5–45°C(optional)
Pressure Range
0.6 MPa
Housing Material
ABS+POM plastic
Power
≤5W
Process Connection
G3/4
Cable Length
Standard 1 m (customizable)
Protection Rating
IP68
Calibration Method
Formazin standard solution
Electrical Connection
RS485 (MODBUS-RTU) or 4-20mA Analog
Installation
Flow-through (light-shielded measurement) / Submersion
Warranty
1 year
Applications

Suitable Water Types

Turbidity reflects suspended particles in water and is a core indicator for drinking-water plants, wastewater discharge, and surface water. Select the range and installation for your application below.

Water supply andproduction

5
Tap Water PlantDrinking WaterSecondary SupplyReverse OsmosisPure Water

Municipal & Environmental

5
Wastewater TreatmentEffluent monitoringSurface WaterRiver MonitoringAquaculture

Industrial Processes

3
ChemicalPharmaceuticalFood

Circulation & Landscape

3
Circulating WaterCooling WaterLandscape Water
Get a recommendation

Tell us your turbidity range and installation, and we will recommend the right NTU model

Send us the turbidity range, water type, and installation conditions. Our engineers will recommend the range, housing, output, and installation, then configure the probe for plug-and-play connection to an 8-channel monitor.