DeepSizer 300
Introduction
Suspended sediment concentration (SSC) and particle size distribution (PSD) are vital indicators in hydrology, water resources, and ecological protection. During floods and typhoons, SSC can rise sharply, often exceeding 20 g/L. Such short-lived surges drive riverbed scour, reservoir siltation, and pollutant transport, posing risks to flood control, water supply, and ecosystem health. Capturing these events is therefore essential for flood forecasting and sustainable reservoir management.
However, traditional sampling methods are labor-intensive, unsafe during extreme weather, and too slow to capture short-term changes. Automated instruments such as turbidity sensors, acoustic devices, and conventional laser systems exist, but they often face challenges like limited measurement range or frequent maintenance.
In this application note, the DeepSizer 300 is presented as a tool for suspended sediment monitoring that provides accurate, real-time SSC and PSD data across wide ranges, including during flood and typhoon conditions.
Instrument
The DeepSizer 300 is equipped with a 635 nm, 10 mW polarized laser and 80 multi-angle detectors that capture both scattered and transmitted light signals. Its advanced software applies Differential Path Technology and Multiple Scattering Correction to ensure reliable results.
For practical applications, more advantages include:
- Wide measurement range: 0.001–100 g/L for SSC, 0.1–2000 µm for PSD.
- Adaptive path control: Automatically adapts to high, medium, or low sediment concentrations, ensuring accuracy under diverse conditions.
- Self-balancing hydraulic pressure: Automatically adjusts for external water pressure, ensuring stable optical path performance at depths up to 200 m.
- Automatic optical window cleaning: Maintains performance with minimal manual intervention.
- Flexible data transmission modes: Supports wired, wireless (4G), and offline modes, enabling adaptation to different monitoring environments.
