Teledyne TSS RDI 300Khz Workshorse Sentinel ADCP

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 information

Water Profiling
Depth Typical Range2 110m
Transducer and Hardware
Beam angle 20°
Configuration 4-beam, convex
Internal memory Two PCMCIA card slots
one memory card included
Communications Serial 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 resolution 0.1cm/s
Velocity range ±5m/s (default) ±20m/s (maximum)
Number of depth cells 1 128
Ping rate 2Hz (typical)
Echo Intensity Profile
Vertical resolution Depth cell size
Dynamic range 80dB
Precision ±1.5dB
Standard Sensors
Temperature (mounted on transducer) Range: -5° to 45°C Precision: ±0.4°C Resolution: 0.01°
Tilt Range: ±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 input 20 50VDC
Internal battery voltage 42VDC new; 28VDC depleted
Battery capacity @ 0°C: 450 watt hours



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