YEX-TSS-408-S Professional Online Suspended Matter (TSS) Sensor: Precision Monitoring for Demanding Environments

In wastewater management and industrial process control, monitoring the concentration of suspended solids is vital for operational efficiency and environmental compliance. The YEX-TSS-408-S Integrated Online Suspended Matter Sensor by Yexsensor provides a rugged, high-precision solution designed to withstand the rigors of continuous immersion while delivering stable, linear data.

Built with a premium 316L stainless steel body and utilizing advanced optical fiber structures, this sensor is the definitive choice for system integrators and plant operators worldwide.

Advanced Measurement Principle: Infrared Backscattering

The YEX-TSS-408-S utilizes the scattered light principle (specifically optimized for backscattering) to measure the concentration of suspended matter. An integrated infrared LED light source emits a beam into the water sample. As this light encounters suspended particles, it scatters.

By precisely measuring the intensity of this backscattered light and comparing it against internal calibration algorithms, the sensor calculates the exact concentration of suspended matter, outputting a linearized digital or analog signal.

Why Choose Infrared Backscattering?

• High Stability: The infrared light source minimizes the impact of water color on the measurement.

• Interference Resistance: The internal optical fiber structure provides exceptional defense against external light interference, ensuring accuracy in outdoor or brightly lit environments.

• Wide Range: Capable of measuring from 0 to 2000 mg/L, making it suitable for both treated effluent and raw wastewater.

YEX-TSS-408-S Online Suspended Matter (TSS) Sensor Technical Performance & Specifications

The YEX-TSS-408-S is engineered for durability and high-resolution data acquisition.

YEX-TSS-408-S Online Suspended Matter (TSS) Sensor Technical Parameters

YEX-TSS-408-S Online Suspended Matter (TSS) Sensor Key Product Advantages

1. Robust Industrial Design
The sensor housing is constructed from 316L stainless steel, providing excellent resistance to corrosion in various chemical environments. With an IP68 waterproof rating, it is designed for long-term deployment in deep tanks, reservoirs, and open channels.

2. Smart Integration & Communication
Native support for the Modbus/RTU protocol via RS-485 allows for easy networking with PLCs, RTUs, and modern IoT gateways. For traditional systems, the optional 4-20mA current loop ensures backward compatibility with standard industrial controllers.

3. Low Power Consumption
Operating at just 0.2W (at 12V), the YEX-TSS-408-S is an ideal candidate for remote monitoring stations powered by solar panels or batteries, reducing overall infrastructure costs.

Primary Application Scenarios

• Municipal Wastewater Treatment: Monitor mixed liquor suspended solids (MLSS) in aeration tanks or track effluent quality to ensure compliance with discharge permits.

• Industrial Process Water: Monitor suspended matter in cooling towers, pulp and paper processing, and mining wash-water to prevent equipment damage and optimize chemical dosing.

• Environmental Monitoring: Track sediment levels in rivers and lakes during dredging operations or after heavy rainfall events to assess environmental impact.

• Sludge Concentration Control: Provide real-time feedback for sludge thickening and dewatering processes, improving the efficiency of sludge management systems.

YEX-TSS-408-S Online Suspended Matter (TSS) Sensor Installation & Electrical Connection

Mechanical Installation Requirements

To achieve the most accurate readings, please observe the following clearance rules:

• Wall Distance: Keep at least 5cm away from any side walls.

• Bottom Distance: Maintain at least 10cm from the bottom to avoid interference from settled sludge.

• Mounting: Utilize the 3/4 NPT thread for secure immersion mounting.

Electrical Wiring Guide

• Red: Power Supply (12~24V DC)

• Black: Ground (GND)

• Blue: RS-485 A

• White: RS-485 B

Note: Ensure all wiring points are waterproofed, especially in environments where the cable may be exposed to seawater or corrosive vapors.

Maintenance & Calibration Procedures

Routine Maintenance

The measuring window is the most critical part of the sensor. Keep it clean to ensure accuracy.

• Cleaning: Use tap water and a soft, damp cloth. For stubborn grease, a mild household detergent may be used.

• Cable Check: Ensure the cable is not under tension, as this can lead to internal wire breakage over time.

Calibration Steps

• Zero Calibration: Place the sensor vertically in a beaker of zero-suspension solution (at least 10cm from the bottom). Wait 1 minute for stabilization before confirming.

• Slope Calibration: Place the sensor in a known concentration of suspension (200.0–2000.0 mg/L). Ensure no bubbles are present on the probe surface. Wait 1 minute for stabilization.

FAQ

Q1. What is the difference between Turbidity and Suspended Matter (TSS) sensors?

While both use light scattering, TSS sensors like the YEX-TSS-408-S are calibrated to report the actual mass concentration of solids (mg/L), whereas turbidity sensors report the "cloudiness" of the water (NTU).

Q2. Can this sensor be used in highly corrosive liquids?

The 316L stainless steel body is highly resistant to many chemicals. However, for extremely acidic or high-chloride environments (like concentrated seawater), please consult our technical team for specific compatibility.

Q3. Does this sensor require a separate transmitter box?

The YEX-TSS-408-S is an integrated sensor. It performs all calculations internally and outputs a standard signal (RS485 or 4-20mA) that can be read directly by your PLC or computer.

Q4. How do I prevent bubbles from affecting the reading?

Bubbles on the optical window can cause erratic data. We recommend installing the sensor in a location with steady flow but away from high-turbulence areas like pump discharges or aerators.

Q5. What is the expected lifespan of the infrared LED?

The infrared LED light source is designed for high stability and long life, typically exceeding 5 to 8 years of continuous operation under normal conditions.

Q6. Is the cable length customizable?

Yes. The standard length is 5 meters, but we can provide customized lengths based on your specific site requirements.

Q7. What should I do if the measurement values are unstable?

First, check for foreign objects or biofouling on the measurement window and clean it. Secondly, ensure the sensor is mounted securely and not vibrating excessively or placed too close to a wall.

Quality Commitment & After-Sales Service

Yexsensor stands behind every product with a rigorous 72-hour aging and stability test.

Warranty: 12-month local after-sales service from the date of sale.

Quality Standard: We guarantee a batch failure rate of less than 2%; otherwise, we bear all replacement costs.

Package Content: Sensor *1, Instruction Manual *1, Quality Certificate *1.