Valeport UltraSV - Ultra-Compact, Sound Velocity Sensor

Each sound velocity measurement is made using a single pulse of sound travelling over a known distance, so is independent of the inherent calculation errors present in all CTDs. Our unique digital signal processing technique virtually eliminates signal noise, and gives almost instantaneous response; the digital measurement is also entirely linear, giving predictable performance under all conditions.

Performance:

• Range: 1375 – 1900 m/s
• Resolution: 0.001 m/s
• Accuracy: ±0.020 m/s
• Acoustic Frequency: 2.5 MHz
• Sample Duration: ~30 µS @1500 m/s
• Sample Rate: Up to 300 Hz

Electrical:

• Voltage: 5 VDC Isolated
• Power: < 250mW
• Connector: Subconn MCBH6F
• Comms: 3.3V Serial TTL

Communications:

• Output: RS485 \ TTL
• Protocol: 4800 to 230400 baud (8,1,N)
• Format: Proprietary NMEA string

Physical:

• Depth Rating: 6000m
• Weight: ~300g (in Air)
• Housing & Bulkhead: Titanium
• Transducer Window: Titanium
• Sensor Legs: Carbon Composite
• Reflector Plate: Titanium.