The Self-Cleaning Suspended Solids Sensor is based on the principle of infrared scattering and utilises a red LED light source and our unique adaptive software algorithm to effectively eliminate external interference. It uses a sapphire light guide structure for excellent repeatability and stability. This TSS sensor requires no reagents and produces no contamination, making it cost-effective and environmentally friendly. It has an integrated self-cleaning system that automatically cleans the sensor surface at regular intervals to prevent bio-attachment, guaranteeing long-term stable operation and measurement accuracy, reducing operating costs and environmental impact, and is widely used in municipal and industrial wastewater treatment, water treatment plants and other water treatment fields, as well as aquaculture, environmental monitoring and many other industries.
Product Features
Digital Sensor, RS485 output, standard MODBUS protocol.
No electrolyte required, strong anti-interference, no frequent calibration.
With a cleaning brush to prevent microorganisms from attaching and has a long maintenance cycle.
Built-in calibration parameters, accurately calibrated before delivery, ready for direct installation and use.
Technical parameter
Name | Online Total suspended solids Sensor |
Principle | Infrared scattering method |
Range | 0-4000mg/L |
Accuracy | ±5%FS |
Resolution | 0.01mg/L |
Linearity | R2 > 0.99 |
Protection Level | IP68 |
Working pressure | 1 bar |
Output Signal | Support RS-485/Modbus protocol |
Operating Temp. | 0-50℃ |
Installation method | Input and flow-through type |
Power Supply | DC 12V, current < 50mA |
Cable Length | 5 meters (default),Customizable |
Housing Material | POM |
Customer Cases

Shipping and returns
After payment, express products within 3 days, generally choose SF, if there is special logistics please inform in advance