Optical SensorsTL-SS Series
Suspended Solids / MLSS Sensor

Optical Sensors
Suspended Solids / MLSS Sensor
TL-SS Series
Near-infrared optical SS/MLSS sensor. Range 0–50 g/L, IP68, RS485 output.
Request a QuoteProduct Overview
The TL-SS Series measures suspended solids (SS) and mixed liquor suspended solids (MLSS) using near-infrared optical scattering. Designed for continuous immersion in activated sludge basins, return sludge lines, and effluent channels.
Technical Specifications
| Parameter | Value |
|---|---|
| Measurement Principle | Near-infrared optical |
| SS Range | 0–50 g/L |
| MLSS Range | 0–50 g/L |
| Accuracy | ±5% FS |
| Temperature Range | 0–50°C |
| Signal Output | RS485 Modbus RTU / 4-20mA |
| Power Supply | 12–24 VDC |
| Protection | IP68 |
| Material | SS316L |
Key Features
- Near-infrared optical measurement — no reagents
- Simultaneous SS and MLSS measurement
- Suitable for high-solids environments
- Continuous immersion design
Typical Applications
Activated sludge process controlReturn sludge monitoringEffluent SS monitoringIndustrial wastewater
All Products
pH / ORP SensorConductivity / TDS / Salinity SensorDissolved Oxygen SensorTurbidity SensorChlorine Sensor (Free / Total)Suspended Solids / MLSS SensorSludge Level SensorPotassium Ion SensorFluoride Ion SensorNitrate / Nitrite SensorAmmonia Nitrogen SensorSludge Blanket / Interface SensorCOD SensorBOD SensorBlue-Green Algae SensorChlorophyll SensorTotal Phosphorus AnalyzerTotal Nitrogen AnalyzerColour / Chroma SensorOil-in-Water SensorWater Hardness SensorLiquid Level SensorCopper Ion SensorOzone SensorMulti-Parameter Water Quality Sensor (Full Spectrum)Multi-Parameter Water Quality Sensor (Simulated Spectrum)
Need technical support or a custom specification?
Our team responds within one business day.