YEX-iZS-306 Online Turbidity Sensor for Water Treatment & Environmental Protection

Yexsensor YEX-iZS-306 Online Turbidity Sensor

As a professional industrial water quality sensor manufacturer, Yexsensor has launched the YEX-iZS-306 integrated online turbidity sensor specially designed for continuous and real-time water quality turbidity monitoring. It adopts advanced 90° scattered light measurement principle, combined with pure quartz optical path and infrared LED light source, to achieve high-precision and anti-interference turbidity detection. Whether in inlet/outlet water monitoring of sewage treatment plants, process control of drinking water plants, or online monitoring of industrial circulating water and river/lake water quality, YEX-iZS-306 can provide you with stable and reliable data support, helping enterprises optimize water treatment processes, ensure effluent compliance, and reduce operating costs.

Yexsensor YEX-iZS-306 Online Turbidity Sensor Product Overview

YEX-iZS-306 is a highly integrated industrial-grade online turbidity sensor that adopts the scattered light method principle, with a built-in temperature sensor and automatic temperature compensation (PT1000), effectively eliminating the influence of temperature changes on measurement results. The sensor supports RS-485 Modbus/RTU digital output and can be directly connected to PLC, DCS, SCADA systems or IoT platforms to achieve remote data acquisition and intelligent monitoring.

The housing adopts a combination design of POM engineering plastic and 316L stainless steel, which not only ensures excellent corrosion resistance but also provides good mechanical strength. The IP68 protection level supports long-term immersion within 20 meters water depth, suitable for various complex water environments. Fast response time (T90＜30s), minimum detection limit as low as 0.3 NTU, range covering 0～1000 NTU, meeting the monitoring needs from low-turbidity drinking water to high-turbidity sewage.

The product design focuses on ease of use and low maintenance cost: two-point calibration method is simple and efficient, power consumption is only 0.1W@12V, standard 5-meter cable supports customization, and submersible 1/2 NPT installation is flexible and convenient. YEX-iZS-306 is not only a sensor, but also a complete solution for industrial water quality turbidity monitoring.

Core Advantages

• High precision and fast response: 90° scattered light method combined with pure quartz optical path, strong resistance to external light interference. Infrared LED light source has high stability, accuracy reaches ±5% or ≤±3 NTU (whichever is greater), resolution 0.1 NTU, response time ＜30s, can capture turbidity changes in real time and adjust water treatment process in time.

• Rugged and durable design: POM+316L stainless steel housing is resistant to acid and alkali corrosion, IP68 protection level supports long-term immersion within 20 meters water depth. Operating temperature 0～50℃, pressure <0.2 MPa, suitable for most industrial sites and natural water bodies.

• Intelligent digital output: RS-485 Modbus/RTU protocol supports multi-sensor networking, long transmission distance and strong anti-interference ability. It can seamlessly connect with existing automation systems, reduce integration costs, and realize unattended monitoring.

• Easy maintenance and low-cost operation: Two-point calibration method is convenient, measurement window is easy to clean. Automatic temperature compensation reduces manual intervention, and the overall design significantly reduces operation and maintenance workload and long-term use costs.

• Strong anti-interference ability: Pure quartz optical path and infrared light source effectively resist external light interference, and can work stably even in outdoor or scenes with large light changes.

Yexsensor YEX-iZS-306 Online Turbidity Sensor Working Principle

YEX-iZS-306 adopts the classic 90° angle scattered light turbidity measurement principle. When a beam of infrared LED light enters the water sample, suspended particles, colloids and other turbidity substances in the water sample will cause light scattering. The sensor measures the intensity of the scattered light in the direction perpendicular to the incident light, compares it with the internal calibration value, and outputs the final turbidity value after linearization processing.

The built-in temperature sensor (PT1000) collects the medium temperature in real time and automatically performs temperature compensation to ensure that the measurement results are not affected by temperature fluctuations. The pure quartz optical path design further improves the stability and anti-interference ability of the optical system, enabling the sensor to output reliable data in complex water environments.

Yexsensor YEX-iZS-306 Online Turbidity Sensor Technical Specifications

Yexsensor YEX-iZS-306 Online Turbidity Sensor Application Scenarios

YEX-iZS-306 is widely used in various water treatment and environmental protection fields that require precise turbidity monitoring, providing users with efficient and reliable solutions:

• Sewage Treatment Plants: Real-time monitoring of inlet water, aeration tank, and outlet water turbidity to ensure stable operation of sewage treatment process and compliant discharge of effluent. IP68 protection and corrosion-resistant housing are particularly suitable for complex sewage environments, reducing maintenance frequency.

• Drinking Water Treatment Plants: Monitor turbidity after sedimentation tanks and filter tanks to strictly control the quality of factory water. Low detection limit (0.3 NTU) meets high standards for drinking water, supporting automated dosing and process optimization.

• Industrial Circulating Water and Cooling Systems: Monitor circulating water turbidity to prevent pipeline blockage, equipment corrosion or reduced heat exchange efficiency. Fast response characteristics help detect abnormalities in time and ensure production safety.

• River and Lake Water Quality Online Monitoring: Deployed in natural water bodies, landscape water or municipal drainage outlets to achieve remote real-time turbidity monitoring and provide data support for environmental supervision and ecological protection.

• Aquaculture and Agricultural Irrigation: Maintain suitable turbidity in aquaculture water bodies, reduce fish and shrimp stress, and improve survival rate and yield. Low power consumption design is suitable for remote aquaculture farms with solar power supply.

• Other Scenarios: Process water monitoring in food and beverage, pharmaceutical, papermaking, power and other industries can achieve online turbidity control through YEX-iZS-306, helping green production and energy saving and emission reduction.

Installation and Electrical Connection

Installation Requirements: Adopt submersible 1/2 NPT thread installation. To ensure measurement accuracy, keep the sensor more than 5cm away from the side wall and more than 10cm away from the bottom to avoid wall or bottom reflection interference. It is recommended to install at a slight tilt angle to prevent bubble accumulation.

Electrical Connection: The cable adopts 4-core twisted pair shielded wire, with clear wiring sequence:

• Red wire — Power positive (12V～24VDC)

• Black wire — Ground (GND)

• Blue wire — 485A

• White wire — 485B

Before powering on, carefully check the wiring sequence to avoid damage caused by incorrect wiring. It is recommended to perform waterproof treatment on all wiring points, especially in environments where it is immersed in water (including seawater) for a long time or exposed to air. The cable should have certain corrosion resistance to ensure long-term stable operation.

Yexsensor YEX-iZS-306 Online Turbidity Sensor Maintenance and Care

The cleanliness of the measurement window directly affects the measurement accuracy, so regular maintenance is very important.

Maintenance Schedule Recommendation:

• Perform regular calibration according to actual water quality conditions and requirements of relevant authorities.

• Daily check whether the measurement window is contaminated and clean it in time if necessary.

Maintenance Methods:

• Sensor outer surface: Rinse with tap water. If there is residual dirt, wipe with a damp soft cloth. Stubborn dirt can be cleaned with a small amount of household detergent.

• Cable inspection: Ensure the cable is not in a tight state to prevent internal wire breakage.

• Measurement window cleaning: Clean in time when dirt is found to keep optical components clean.

Notes: The sensor contains precision optical and electronic components inside. Please avoid violent mechanical impact. The sensor has no user-serviceable parts. If there is any problem, please contact professional technical support.

Calibration Method

YEX-iZS-306 adopts two-point calibration method, which is simple to operate:

a) Zero point calibration: Use zero turbidity solution, place the sensor vertically in a large beaker, keep the measuring end at least 10cm away from the bottom, wait for the value to stabilize for 3～5 minutes, then perform zero point calibration.

b) Slope calibration: Place the sensor in standard turbidity solution, keep the measuring end more than 10cm away from the bottom, and perform slope calibration after stabilization.

Specific calibration instructions can be found in the product appendix or contact us for detailed guidance. It is recommended to perform regular calibration according to the actual use environment and regulatory requirements to maintain optimal measurement performance.

Why Choose Yexsensor

Yexsensor focuses on the research and development and manufacturing of industrial water quality sensors. A strict quality control system ensures that every sensor undergoes 72-hour aging test and stability test. We provide full-range technical support from product selection to installation and debugging to long-term operation and maintenance. YEX-iZS-306 wins the trust of users with high cost performance, reliable performance and convenient maintenance, and has been widely used in sewage treatment, drinking water, industrial water treatment and other projects.

Frequently Asked Questions (FAQ)

Q1. What is the range and accuracy of YEX-iZS-306? Is it suitable for drinking water monitoring?

Range 0～1000 NTU, resolution 0.1 NTU, accuracy ±5% or ≤±3 NTU (whichever is greater). Minimum detection limit 0.3 NTU, especially suitable for precise low-turbidity monitoring in drinking water plants, and can also cover high-turbidity sewage scenarios.

Q2. What communication protocols are supported? How to connect to existing automation systems?

Supports RS-485 Modbus/RTU protocol, can be directly connected to PLC, DCS, SCADA or IoT gateways. Standard protocol, simple wiring, long transmission distance, easy system integration.

Q3. What are the precautions during installation?

Adopts submersible 1/2 NPT installation, keep more than 5cm from the side wall and more than 10cm from the bottom. Check cable waterproof treatment before installation to avoid bubble or wall reflection interference with measurement.

Q4. How deep water can the sensor work in?

Protection rating IP68, supports long-term immersion within 20 meters water depth, suitable for deep water tanks, river channels or large water treatment structures.

Q5. How to perform calibration? What needs to be prepared?

Adopts two-point calibration (zero point + slope), need to prepare zero turbidity solution and standard turbidity solution. Operation is simple, calibration can be completed after the value stabilizes for 3～5 minutes. It is recommended to recalibrate regularly according to regulatory requirements.

Q6. Does the cable length support customization? What about power consumption?

Standard configuration is 5-meter cable, other lengths can be customized according to site requirements. Power consumption is only 0.1W@12V, low power consumption design is suitable for long-term operation and solar power supply scenarios.

Q7. What should I do if the measured value drifts or becomes unstable?

First check whether the measurement window is attached with dirt and clean it in time; confirm whether the installation position meets the requirements; perform two-point calibration again. If the problem persists, please contact our technical support for diagnosis.

Q8. What is the product warranty period? What after-sales services are provided?

One-year warranty from the date of sale (except for improper use). We provide technical consultation, calibration guidance, spare parts supply and fast response after-sales service, committed to making every user worry-free.

YEX-iZS-306 online turbidity sensor is a reliable water quality monitoring partner created by Yexsensor for you. Contact us immediately to get detailed quotation, technical solutions or prototype testing, and help your water treatment system achieve intelligent upgrade!