Teledyne RDI 300Khz Workshorse Sentinel ADCP

Available as:
  • Rental
  • Sale (ex rental)

Teledyne RDI 300Khz Workshorse Sentinel ADCP – Available for rental, hire and ex-rental purchase from Ashtead Technology.

The self-contained Sentinel is Teledyne RD Instruments’ most popular and versatile Acoustic Doppler Current Profiler (ADCP) configuration, boasting thousands of units in operation in over 50 countries around the world. By providing profiling ranges from 1 to 165m, the high-frequency Sentinel ADCP is ideally suited for a wide variety of applications. Thanks to Teledyne RDI’s patented BroadBand signal processing, the Sentinel also offers unbeatable precision, with unmatched low power consumption, allowing you to collect more data over an extended period.

The lightweight and adaptable Sentinel is easily deployed on buoys, boats, or mounted on the seafloor. Real-time data can be transmitted to shore via a cable link or acoustic modem, or data can be stored internally for short or long-term deployments. The Sentinel is easily upgraded to include pressure, bottom tracking, and/or directional wave measurement for the ultimate data collection solution.

Key features

  • Versatility: Direct reading or self contained, moored or moving, the Sentinel provides precision current profiling data when and where you need it most
  • A solid upgrade path: The Sentinel has been designed to grow with your needs. Easy upgrades include pressure, bottom tracking, and directional wave measurement
  • Precision data: Teledyne RDI’s BroadBand signal processing delivers very low-noise data, resulting in unparalleled data resolution and minimal power consumption
  • A four-beam solution: Teledyne RDI’s 4-beam design improves data reliability by providing a redundant data source in the case of a blocked or damaged beam; improves data quality by delivering an independent measure known as error velocity; and improves data accuracy by reducing variance in your data

Technical specifications

Water Profiling
DepthTypical Range2 110m
Transducer and Hardware
Beam angle20°
Configuration4-beam, convex
Internal memoryTwo PCMCIA card slots
one memory card included
CommunicationsSerial port selectable by switch for RS-232 or RS-422.
ASCII or binary output at 1200 115,400 baud.
Profile Parameters
Velocity accuracy:0.5% of the water velocity relative to the ADCP ±0.5cm/s
Velocity resolution0.1cm/s
Velocity range±5m/s (default) ±20m/s (maximum)
Number of depth cells1 128
Ping rate2Hz (typical)
Echo Intensity Profile
Vertical resolutionDepth cell size
Dynamic range80dB
Standard Sensors
Temperature (mounted on transducer)Range: -5° to 45°C Precision: ±0.4°C Resolution: 0.01°
TiltRange: ±15° Accuracy: ±0.5° Precision: ±0.5° Resolution: 0.01°
Compass (fluxgate type)Accuracy: ±2° 5 Precision: ±0.5° 5 Resolution: 0.01° Maximum tilt: ±15°
External DC input20 50VDC
Internal battery voltage42VDC new; 28VDC depleted
Battery capacity@ 0°C: 450 watt hours
Standard depth rating200m; optional to 6000m
Operating temperature-5° to 45°C
Storage temperature-30° to 60°C


205 x 229 x 3968.07 x 9.01 x 15.5913.0kg (In Air) 4.5Kg (In Water)28.7lbs (In Air) 9.9lbs (In Water)