TSS Sensor (Total Suspended Solids)
Measuring suspended particle concentration to assess water quality and treatment performance.
What Does a TSS Sensor Measure?
A TSS sensor measures the concentration of suspended solids present in a liquid, typically expressed in mg/L. These solids include organic matter, inorganic particles, sediments, and microorganisms that affect water clarity, treatment efficiency, and environmental compliance.
Working Principle
TSS sensors operate by measuring the scattering or attenuation of light caused by suspended particles in a liquid. The detected optical signal is correlated with laboratory gravimetric TSS values through calibration.
- Optical light scattering measurement
- Near-infrared (NIR) light source
- Photodetector-based signal correlation
Common Types of TSS Sensors
- Inline TSS Sensors
- Submersible TSS Probes
- Optical Backscatter Sensors
- TSS Analyzers with Transmitters
- Portable TSS Measurement Devices
Signals & Outputs
- Analog: 4–20 mA
- Digital: RS-485 (Modbus RTU)
- Industrial Ethernet (via analyzers)
- Measured in mg/L (as TSS equivalent, correlated)
Sensor Cluster
This sensor belongs to the Process Quality Cluster, focusing on suspended solids monitoring, clarification efficiency, sludge control, and regulatory compliance.
Direct & Indirect Meaning of TSS Data
Direct Meaning
The measured value directly represents the estimated concentration of suspended solids in a liquid.
Indirect Meaning
TSS trends indirectly indicate sediment load, clarification and filtration performance, sludge concentration, erosion impact, and potential discharge violations.
Industries Using TSS Sensors
Role of IoT in TSS Monitoring
With Industrial IoT integration, TSS sensors enable continuous solids load monitoring, automated clarification control, early detection of abnormal discharge, and compliance-ready environmental reporting.
IndustrioPedia Perspective
The TSS Sensor converts visual cloudiness into mass. Paired with turbidity, it transforms optical signals into actionable solids data, supporting efficient treatment, regulatory compliance, and responsible water management.