The Next-Generation Workhorse for Autonomous Current Profiling
Product Overview
Released in early 2023, the Teledyne RD Instruments (RDI) Workhorse II Sentinel is a comprehensive design refresh of the original Workhorse Sentinel, which has been the global industry standard for over 25 years. It is a self-contained Acoustic Doppler Current Profiler (ADCP) designed for multi-month autonomous deployments in oceans, harbors, lakes, and estuaries.
The Workhorse II update addresses global supply chain challenges by refreshing the internal electronics with modern components while incorporating significant performance improvements based on decades of user feedback. It retains the same field-proven acoustic performance but adds superior data storage, a more robust connector, and a significantly improved compass.
What’s New in Workhorse II? (Comparison with Original)
| Feature | Original Workhorse Sentinel | New Workhorse II Sentinel |
|---|---|---|
| Electronics | Legacy CPU & DSP Boards | Unified CPU + DSP Board (Modern Components) |
| Memory | 4GB PCMCIA Cards | 4GB to 64GB Compact Flash (Increased Capacity) |
| Connector | Rectangular LPMBH (Low Profile) | Round Metal Shell MCBH (More Robust/Threaded) |
| Compass | Fluxgate | TRDI ISM (MEMS-based) (Better at High Latitudes) |
| Tilt Range | ±15° | ±90° (High-angle performance) |
| Software | WinSC / WinADCP | Workhorse II Plan / ISM Calibration Suite |
| Standard Modes | Basic Profiling | LADCP, Ice Tracking, & High-Res modes included |
| Specification | 1200 kHz | 600 kHz | 300 kHz |
|---|---|---|---|
| Max Profiling Range | 20 m | 70 m | 165 m |
| Min Depth Cell Size | 0.05 m | 0.1 m | 0.5 m |
| Velocity Accuracy | ±0.3% (±0.3 cm/s) | ±0.3% (±0.3 cm/s) | ±0.5% (±0.5 cm/s) |
| Standard Depth Rating | 200 m | 200 m | 200 m |
| Optional Depth Rating | 6000 m | 6000 m | 6000 m |
| Weight (Air/Water) | 13.5 kg / 5.0 kg | 13.5 kg / 5.0 kg | 13.5 kg / 5.0 kg |
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