The SUP-PTU300 Flow-through Turbidity Meter is designed for continuous online monitoring of low-level turbidity in drinking water and clean water applications. Utilizing a 90° scattered light measurement principle and a sealed flow-through measuring chamber, it provides stable, high-precision measurements with minimal maintenance. Supporting RS485 Modbus RTU communication and optional 4–20 mA output, the PTU300 integrates easily with PLC and SCADA systems, making it an ideal solution for municipal water treatment, water distribution networks, industrial process water, and environmental monitoring.