Huace Navigation RS3600D: Tri-band Combination for Hydrological Testing at Varying Depths

In hydrometric survey work, staff often encounter such challenges: water flow in shallow areas is complex, and conventional equipment can hardly capture low-flow velocity data accurately; medium and deep water areas require a balance between coverage range and measurement stability, resulting in extremely cumbersome operations; cross-section measurements in deep water areas impose high requirements on equipment penetration capacity, and dedicated instruments usually need to be replaced to complete the work. Differentiated demands under various water depth conditions not only raise costs for equipment transportation and operation, but may also cause discontinuity in data connection due to equipment switching, undermining the efficiency and accuracy of surveys. The flagship moving-boat ADCP RS3600D launched by Huace Navigation breaks the equipment barriers for measurements across different water depths through its unique technical design, enabling a single device to meet diverse hydrometric survey requirements.

The prominent advantage of the RS3600D lies in its tri-frequency combination design. Through the coordinated operation of the 3600 kHz ultra-high frequency band, the 1200 kHz band and the 600 kHz central vertical depth sounding beam, it achieves full-scenario coverage ranging from shallow water to deep water. The 3600 kHz ultra-high frequency delivers exceptional resolution, enabling precise capture of low-flow velocity data in ultra-shallow water with centimeter-level measurement accuracy. It can clearly record detailed flow variations even in slowly flowing areas such as nearshore shoals and small rivers. The 1200 kHz band is dedicated to medium and deep water areas. Supported by stable signal transmission capability, it meets the survey requirements for most conventional water bodies and efficiently collects flow velocity and discharge data in urban inland rivers as well as small and medium-sized lakes. The 600 kHz central vertical depth sounding beam is specially designed for deep water regions. Its strong signal penetration allows stable operation in deep-water environments including large rivers and reservoirs, guaranteeing data accuracy for deep-water cross-section measurements.

Apart from the full-depth adaptability brought by the tri-frequency combination, the RS3600D features further optimizations in measurement accuracy and flexibility. Equipped with ultra-high frequency broadband technology, its transducer adopts micron-level manufacturing processes with an ultra-high carrier frequency up to 3600 kHz. Supported by ultra-wideband spread spectrum modulation technology, the minimum vertical bin thickness reaches 2 cm, the minimum measurable flow velocity is better than 1 cm/s, and the top blanking distance is merely 5 cm. This means the device can accurately capture subtle flow variations under shallow-water conditions with high or low flow velocities, providing reliable flow velocity and discharge data for hydrometric surveys.

Meanwhile, the RS3600D innovatively adopts DFM dual-frequency coordinated measurement technology and an intelligent stitching algorithm, which further increases the proportion of measured discharge data in medium and deep water and improves surface layer survey accuracy. Its measurable water depth ranges from 0.05 meters to 40 meters. Whether for low-discharge shallow waters required by ecological monitoring or deep-water zones of large rivers involved in hydraulic engineering construction, operators do not need to frequently switch instruments. A single RS3600D can complete surveys across diverse scenarios. It not only reduces equipment investment costs but also greatly enhances survey efficiency, making hydrological data collection more convenient and accurate.