Teledyne RDI 75Khz Long Ranger

Available as:
  • Rental
  • Sale (ex rental)

Teledyne RDI 75Khz Long Ranger – Available for rental, hire and ex-rental purchase from Ashtead Technology.

Long-range and long-term, the Long Ranger is the best choice for gathering detailed data on seasonal and annual current structure fluctuations for scientific research and offshore oil and gas applications.

Hundreds of Long Ranger units are currently deployed on: ' environmental monitoring buoys ' offshore oil rigs ' polar research moorings The highly flexible Long Ranger unit is available in three product configurations: self-contained, direct reading, or remote-head depending on your application requirements.

Collect data at your desk: the Long Ranger is designed to operate in real-time data mode. Third-party products are available for acoustic and radio data transfer direct to your location.

Turnkey deployment solution: Teledyne RDI and Flotation Technologies have joined forces to offer our customers turnkey mooring solutions, including a variety of cages, flotation, and bottom mounts.

Key features

  • Cost-effective extended capability:
  • Long Ranger inherits the Workhorse family electronics that have been proven in thousands of Teledyne RDI ADCP applications.
  • Patented BroadBand signal processing produces precise measurement, allowing frequent sampling with extended battery life.
  • Provides the longest profiling range available from a self-contained ADCP.
  • Set it and forget it: Three, six, twelve-month-long successful deployments from polar waters to the tropics.
  • Workhorse reliability

Technical specifications

Velocity accuracy± 1% ± 5mm/s.
Velocity resolution1mm/s
Velocity range± 5m/s default ± 10m/s max
Depth cell size4 32m
Number of depth cells1 128
Ping rate1Hz (typical)
Vertical resolutiondepth cell size
Dynamic range80dB
Precision±1.5dB (relative measure)
Beam angle20°
Beam width
Configuration4-beam, convex
Internal memoryUp to 2gB on two PCMCIA slots; one memory card included
CommunicationsRS-232 or RS-422; ASCII or binary output at 1200 115,400 baud.
DC input20 50VDC. Four internal alkaline battery packs.
Voltage42V DC(new) 28VDC (depleted)
Capacity Each pack @ 0°C450 watt hours/1900 Wh total
Pressure Sensor:Maximum range: 2000m Accuracy: ±5m
Temperatures (mounted on transducer)Range: -5° to 45°C Precision: ±0.4°C Resolution: 0.01°
TiltRange: ±50° Accuracy: ±0.5° Precision: ±1.0° Resolution: 0.01°
Compass(fluxgate type, includes built-in field calibration feature) Accuracy: ±2° 5 Precision: ±0.5° 5 Resolution: 0.01° Maximum tilt:±15°
Pressure SensorAccuracy: ±5m
Standard depth rating1500m (3000m optional)
Operating temperature-5° to 45°C
Storage temperature without batteries-30° to 60°C


WEIGHT IN WATERSC 55, DR 36, ExtBC 16SC 121, DR 79, ExtBC 35
DIMENSIONS550 X 178 X 99221.6 X 7 X 39