YEX-S2-TSS-S Online Suspended Solids Sensor

Precise Control of Suspended Solids Concentration, Solving Sewage Process Monitoring Challenges

In wastewater treatment, industrial discharge and environmental monitoring, large fluctuations in suspended solids concentration, measurement susceptibility to interference, and high maintenance frequency have long been pain points for engineering technicians. The Yexsensor YEX-S2-TSS-S Online Suspended Solids Sensor adopts the scattered light measurement principle, combined with fiber optic structure and infrared LED light source, providing you with stable and reliable real-time data support to help optimize process control and ensure compliant discharge.

Core Advantages

• High-stability infrared light source and temperature compensation, minimal drift during long-term operation

• Fiber optic structure design, effective resistance to external light interference

• RS-485 Modbus/RTU + 4-20mA dual output, easy integration with existing PLC/SCADA systems

YEX-S2-TSS-S Online Suspended Solids Sensor Product Overview

The Yexsensor YEX-S2-TSS-S Online Suspended Solids Sensor is a high-performance online detection device developed for industrial water treatment and environmental monitoring. Based on the scattered light method, when a light beam enters the water sample, suspended particles produce scattered light. The sensor precisely measures the intensity of backscattered light and compares it with built-in calibration values to achieve rapid calculation and linearized output of suspended solids concentration.

The sensor adopts a 316L stainless steel and fiber optic composite structure with IP68 protection rating. It can operate submerged up to 20 meters depth and is suitable for 0~50℃ industrial field environments, providing reliable online TSS data support for wastewater treatment plants, industrial parks, and river & lake monitoring.

YEX-S2-TSS-S Online Suspended Solids Sensor Key Advantages

1. Excellent Measurement Stability and Anti-Interference Capability

The sensor uses a high-stability infrared LED light source and a precision fiber optic structure to effectively shield against external natural light and ambient light interference. The built-in Pt1000 temperature sensor provides automatic temperature compensation, ensuring consistency of measurement results under different temperature conditions. It maintains high reliability even in industrial sites with changing lighting or complex water composition.

2. High Precision and Wide Range Adaptability

The range covers 0～2000mg/L, meeting various monitoring needs from low-concentration surface water to high-concentration activated sludge. Resolution reaches 0.1mg/L (NTU equivalent), accuracy ±5% (depending on sludge homogeneity). Combined with two-point calibration, it can quickly adapt to different working conditions and ensure data accuracy.

3. Powerful System Integration Capability

Supports RS-485 Modbus/RTU protocol and 4-20mA current output, enabling seamless connection with mainstream PLC, DCS, data acquisition instruments and host computer platforms. Standard 5-meter cable (customizable) and 3/4 NPT threaded installation greatly reduce on-site integration difficulty and construction costs.

4. Robust and Durable, Easy Maintenance

Full 316L stainless steel wetted parts with IP68 protection rating, corrosion-resistant and impact-resistant. The measurement window is designed for easy cleaning. Daily maintenance only requires rinsing with clean water or wiping with a soft cloth. There are no user-maintainable parts inside the probe, significantly reducing operation and maintenance workload.

YEX-S2-TSS-S Online Suspended Solids Sensor Technical Specifications

YEX-S2-TSS-S Online Suspended Solids Sensor Application Scenarios

1. Wastewater Treatment Plants: Sludge concentration monitoring in aeration tanks, sedimentation tanks, and secondary sedimentation tanks to optimize aeration volume and return ratio control.

2. Industrial Wastewater Treatment: Online monitoring of suspended solids in production wastewater from chemical, pharmaceutical, printing & dyeing, papermaking, food processing and other industries to ensure compliant discharge.

3. Environmental Water Monitoring: Dynamic monitoring of suspended solids in rivers, lakes, reservoirs and surface water to support water environment management.

4. Municipal Projects and Pumping Stations: Monitoring of rainwater/sewage pumping stations and pipeline networks to prevent pipe blockage and equipment wear.

5. Aquaculture and Aquatic Fields: Turbidity/suspended solids control in high-density aquaculture water bodies to ensure water quality stability.

FAQ

Q1: Is the YEX-S2-TSS-S sensor suitable for high-concentration activated sludge monitoring?

A1: Yes. Its range reaches up to 2000mg/L, fully meeting the online monitoring requirements of mixed liquor suspended solids (MLSS) in activated sludge processes.

Q2: Will external light affect the measurement results?

A2: The sensor uses a fiber optic structure design and infrared LED light source, providing extremely strong resistance to external visible light. It can operate stably in most outdoor or open pool environments.

Q3: How to perform on-site calibration?

A3: Supports two-point calibration (zero + slope). Use standard suspension solution of known concentration. Immerse the probe vertically, keep it away from the container bottom, and operate according to the manual after the reading stabilizes.

Q4: Does the output signal support Modbus protocol?

A4: Yes. It supports RS-485 Modbus/RTU protocol and also provides 4-20mA current output for convenient access to different control systems.

Q5: What distance requirements should be noted during installation?

A5: It is recommended to maintain more than 5cm from side walls and more than 10cm from the pool bottom to avoid reflection interference from walls or bottom affecting measurement.

Q6: Can the protection rating support long-term submersion?

A6: IP68 protection rating supports long-term submersion up to 20 meters. Wetted parts are made of 316L stainless steel, suitable for seawater and corrosive wastewater environments.

Q7: Is daily maintenance workload heavy?

A7: Maintenance is simple. Only regularly clean the measurement window with clean water. Check that the cable is not under tension. There are no user-serviceable parts inside the probe, significantly reducing O&M costs.

Q8: Can longer cables or special customizations be provided?

A8: Yes. Cable length customization and other technical parameter adjustments are supported. Please contact the YEXSensor technical team to discuss specific requirements.

Summary

The Yexsensor YEX-S2-TSS-S Online Suspended Solids Sensor provides a reliable online TSS monitoring tool for water treatment projects with its stable scattered light measurement technology, robust industrial-grade design, and convenient integration features. It helps engineers more accurately grasp water quality dynamics, optimize process parameters, reduce operating costs, and ensure environmental compliance.

Need detailed technical manuals, selection guidance, or on-site testing support? Welcome to contact the YEXSensor professional team. We will provide you with complete solutions.

YEXSensor — Focused on industrial water quality online monitoring, empowering smart environmental protection.