Doppler current transducer BBUA-ADCP

monitoring

Overview
The BBUA-ADCP series comprises Doppler current transducers designed for river and ocean current profiling, channel velocity measurement, hydrological monitoring and underwater flow-field research. Four center-frequency options are available (500 kHz, 1 MHz, 2 MHz, 3 MHz), each with specific beam angles, electrical matching, temperature ranges, pressure ratings and housing materials suitable for submerged operation.

Frequency and operating configurations
Center frequency — Half-power beam angle — Minimum impedance — Capacitance at 1 kHz — Peak operating voltage — Operating temperature — Pressure rating — Housing material — Protection rating
500 kHz ±5% — 5.8° ±10% — 100 Ω ±20% — 1,500 pF ±20% — <600 Vpp — -20 to +60°C — ≤1 MPa — Stainless steel and plastic — IP68
1 MHz ±5% — 2.4° ±10% — 15 Ω ±20% — 4,000 pF ±20% — <300 Vpp — -40 to +80°C — ≤1 MPa — 304 stainless steel and PI — IP68
2 MHz ±5% — 2° ±10% — 3.5 Ω ±20% — 5,600 pF ±20% — <150 Vpp — -40 to +80°C — ≤1 MPa — 304 stainless steel and PI — IP68
3 MHz ±5% — 2.9° ±10% — 10 Ω ±20% — 1,000 pF ±20% — <95 Vpp — -20 to +60°C — ≤1 MPa — 304 stainless steel and plastic — IP68

Confirmed range and bandwidth data
Frequency — Confirmed characteristic
1 MHz — Reference range 0.05 to 3 m; bandwidth ±20% at -3 dB
2 MHz — Reference range 0.03 to 2 m

Applications and selection

• River and ocean current profiling
• Channel velocity measurement
• Hydrological monitoring
• Underwater flow-field research

Characteristics / Technical specifications

• Series: BBUA-ADCP
• Available center frequencies: 500 kHz, 1 MHz, 2 MHz, 3 MHz
• Beam angles (half‑power): 500 kHz: 5.8° ±10%; 1 MHz: 2.4° ±10%; 2 MHz: 2° ±10%; 3 MHz: 2.9° ±10%
• Minimum impedance: 500 kHz: 100 Ω ±20%; 1 MHz: 15 Ω ±20%; 2 MHz: 3.5 Ω ±20%; 3 MHz: 10 Ω ±20%
• Capacitance at 1 kHz: 500 kHz: 1,500 pF ±20%; 1 MHz: 4,000 pF ±20%; 2 MHz: 5,600 pF ±20%; 3 MHz: 1,000 pF ±20%
• Peak operating voltage (Vpp): 500 kHz: <600; 1 MHz: <300; 2 MHz: <150; 3 MHz: <95
• Operating temperature ranges: 500 kHz & 3 MHz: -20 to +60°C; 1 MHz & 2 MHz: -40 to +80°C
• Pressure rating: ≤1 MPa (all configurations)
• Housing materials: stainless steel (304), plastic and PI depending on frequency
• Protection rating: IP68
• Intended uses: river/ocean profiling, channel velocity, hydrology, underwater flow research