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Valeport - Model Thru-Hull SVS -Sound Velocity Sensor
A specific configuration of Valeport’s MODUS SVS sound velocity sensor, allowing the probe to be deployed through the vessel’s hull and safely recovered for cleaning and maintenance without requiring docking. It is particularly useful for multibeam applications where knowledge of the sound velocity adjacent to the multibeam transducer is necessary. The probe is also available with an optional PRT temperature sensor.
Sensors
Sound Velocity
Valeport’s unique digital time of flight sound velocity sensor. Advanced composite, titanium and polycarbonate construction, together with the digital sampling technique give unmatched levels of accuracy.
- Range: 1375 - 1900 m/s
- Accuracy: ±0.02 m/s
- Resolution: 0.001 m/s
Temperature (optional)
- Fast response PRT with guard.
- Range: -5 to +35 °C
- Accuracy: ±0.01 °C
- Resolution: 0.002 °C
Valve
The Thru-Hull SVS uses a PN16 ball valve, nominal 100mm bore, operated using a 90° turn lever. The valve is normally supplied in aluminium bronze, and comes complete with full Germanischer Lloyds certification (or equivalent) to allow it to be fitted to the vessel.
Data
- Sampling: Continuous Data at up to 8 Hz, data on demand, or Burst Average mode
- Protocol: RS232, RS485 & RS422 fitted as standard
- Baud Rate: 2400 - 115200 (8,1,N)
- Format: ASCII text in a selection of formats, including tab separated, CSV or NMEA.
Power
- Voltage: 9 - 30vDC
- Power: 0.7W max
Operation
- The valve should be fitted to vessel in dry dock, and left in a closed position. The mounting sleeve is fitted to the valve, and the SVS secured within the sleeve. The SVS features O-ring seals to the sleeve, so once it is fitted, the valve may be opened and the probe pushed into position.
- To recover the probe, withdraw it into the sleeve, close the valve, and disassemble the sleeve.
Physical
- Materials
- Instrument: Titanium housing, polyurethane, composite and polycarbonate sensor components
- Mounting: 316 Stainless steel
- Valve: Aluminium Bronze (certified to 3.1b)
- Dimensions
- Probe is 80mmØ x 400mm. Nominal 1m working space required to operate system. Please refer to Valeport for full details.
- Shipping
- Instrument: 65 x 40 x 30cm, 30 kg
- Valve: 36 x 32 x 32cm, 30 kg
Software
System is supplied with DataLog Express Windows based PC software, for instrument setup, data extraction and display. DataLog Express is license free.