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| Sonardyne UK (Head Office) T. +44 (0) 1252 872288 F. +44 (0) 1252 876100 E. sales@sonardyne.com www.sonardyne.com Datasheet RovNav Mk4 LBL Transceiver (Discontinued) Description Sonardyne's RovNav Mk4 is an underwater Long BaseLine (LBL) acoustic transceiver designed to accurately and rapidly position Remotely Operated Vehicle's (ROV's) and towfish. By measuring ranges to a seabed transponder array and calculating the time taken to receive each reply, the position of the mobile relative to the array can be determined. A digital link with the survey computer ensures fast position updates and that reliable communications with the RovNav can be maintained even down long umbilical in deepwater. Depending on the positioning accuracy and range required, RovNav is available in three frequency versions. Medium Frequency (16-36kHz) gives ranges of up to 3km and a relative positioning accuracy of 0.15m. Extra High Frequency (50-110kHz) gives ranges to 1km with relative positioning accuracies of 0.05m whilst Low Frequency (8-16kHz) can range up to 10km. Note: All ranges are dependant upon on local operating conditions and water depth. Key Features * Depth rated up to 4,000 Metres (MF) * Baseline measurements <5cm (EHF) * 12 channel receiver for fast position updates * RS 232/RS485 half duplex communications via ROV's umbilical * Two remote transducers enable sequential position fixing * Compact and rugged design * Incorporates depth, temperature and salinity sensors (optional) RovNav features a 121 channel receiver for ranging to LBL transponder arrays and the command set is Sonardyne PAN compatible. Two transducers can be connected to the RovNav for added redundancy or sequential position fixing. In the event of power failure, the unit automatically reverts to transponder mode to enable the emergency relocation of the lost ROV or towfish. Sonardyne UK (Head Office) T. +44 (0) 1252 872288 F. +44 (0) 1252 876100 E. sales@sonardyne.com www.sonardyne.com Specification RovNav Mk4 LBL Transceiver (Discontinued) Feature Depth Rating Operating Frequency Transducer Beam Shape Typical Accuracy Source Level Vertical Source Level Horizontal Receiver Threshold Pulse Length Number of Replies (Battery Option) Mechanical Construction Dimensions (LxDia) Weight in Air Weight in Water Sensor Options RovNav Remote Tdr RovNav Remote Tdr Depth Temperature Salinity Type 7807 4,000 Metres MF (18-36kHz) Directional or Omni-Directional 0.15-1 Metres 200db re 1Pa @1m 185dB re 1Pa @1m <95dB re 1Pa 4ms 200 X 10 Aluminium Alloy Hard Anodised 714.4mm (28.1") x 130.6mm (5.1") 15kg 4.5kg 6.6kg 2.5kg Digiquartz or Strain Gauge PRT Conductivity Type 7808 2,500 Metres EHF (50-110kHZ) Omni-Directional 0.02-0.15 Metres 190db re 1Pa @1m 190db re 1Pa @1m <100dB re 1Pa 1ms 750 X 10 Aluminium Alloy Hard Anodised 714.4mm (28.1") x 130.6mm (5.1") 15kg 4.5kg 6.6kg 2.5kg Specifications subject to change without notice - 10/2006 |
Price & Availability of 7808
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