Mission Dam, San Diego

Shark Bay Saltfield, Australia

Hebden Beck, United Kingdom

Troyes, France

River Duddon, United Kingdom

Mission Bay, San Diego

River Dee on the English/Welsh Border

Shark Bay, Australia

World's smallest ADCP packageIntroducing the SonTek RS5, the latest addition to Xylem's award-winning RiverSurveyor® family of discharge instruments. Good things really do come in small packages!

The RS5 system fits in the palm of your hand and includes everything you need to make a discharge measurement. Get the package that includes the HydroBoardII Micro and you’ll have everything you need for the fastest, high-quality measurement possible. It is the smallest and lightest complete ADCP solution for moving boat discharge measurement available. Simply fold the GNSS/antenna mast and pop the RS5 and board into the custom designed backpack for easy transportation and minimal re-assembly between sites.

The RS5 includes SonTek’s proprietary SmartPulse+ which incorporates Broadband and Pulse-coherent acoustic processing methods. This algorithm automatically determines the best measurement methodology based on environmental conditions and adjusts instrument settings so the user doesn’t have to, ensuring the most accurate and user-friendly data collection possible.

For a streamlined experience, batteries and Bluetooth radio are housed in the RS5, which means there is no need to connect to external electronics boxes. Rely on an integrated, modern, high speed, and low power wireless Bluetooth Low Energy (BLE5) radio, with 100m range and five-minute data buffer to prevent data loss and redundant work.

Learn more about what makes RS5 a step above the rest! Download the brochure for a complete listing of special features.

  • Features
  • Specifications
  • Software
Vertical acoustic beam Superior channel definition for the most accurate channel cross-sectional area, for discharge applications. Measures the depth directly under the system and extends maximum discharge depth if bottom-tracking is out of range.
SmartPulse+® An intelligent algorithm utilizing Pulse-coherent and Broadband acoustic profiling that automatically adjusts based on conditions. Reliable bottom tracking and velocity profiling through a wide range of conditions and shallower than ever before. Visualize velocity data like never before with cell sizes down to 2.5 cm.
360º compass and two-axis tilt sensor Comes standard on the RS5 unit. Reports vessel heading, magnetic error and compensates for motion due to surface conditions.
Bottom-tracking Acoustically track vessel speed over ground independent of DGNSS. Also supplies secondary depth measurement.
RTK GPS (Coming Soon!) Ultra precise positioning as an alternative to bottom tracking in moving bed or other difficult situations.
DGNSS (Option) Integrated DGNSS smart antenna for position as a backup or alternative to bottom tracking in moving bed or other difficult conditions. Geolocate each sample (or ensemble) during measurement. Utilizes multiple constellations for increased global precision (GPS, SBAS, GLONASS, BeiDou, GALILEO, QZSS).

Water Velocity Profiling Profiling Range 0.1-6 m (*1)
Velocity Range ±5 m/s
Accuracy  1% ±0.002 m/s
Resolution 0.001 m/s
Number of Cells Up to 128
Cell Size 2.5-30 cm
Data Output Rate 1.0 Hz
Bottom Tracking Depth Range 0.1-6 m (*1)
Accuracy (*2) 1% ± 0.002 m/s
Resolution 0.001 m/s
Depth Measurement Range 0.1-6.5 m (*1)
Accuracy 1% ±0.005 m
Sensors Temperature Sensors Resolution: ±0.01°C
Accuracy: ±0.5°C
Compass/Tilt Sensor Range: ±180° Pitch/Roll, 0-360° Heading
Heading Accuracy: ±2°
Pitch/Roll Accuracy: ±1°
Transducers Total Number Five, 3.0 Mhz
Beam Angle 25°
Beam Width
Bandwidth 25%
Battery Characteristics Input Voltage 3.3-4.2 VDC
Power Source - Li-Ion 1x size 18650, Tenergy, Type 30016-04, 3.7Vdc, 2600mAh
Battery Life - 1 x size 18650 Seven hours continuous use, typical settings (*3)
Power Consumption 1.0 W (Average)
Dimensions 19.2 mm x 69.7 mm
Communications Radio Protocol Bluetooth Low Energy (BLE5)
Range 100 m (*4)
Bluetooth Compliance FCC Part 15, FCC ID: XPYNINAB30
ISED Certification: 8595A-NINAB30
Environmental Operation Temperature -5° to 45°C (23°F to 113°F)
Storage Temperature -20° to 70°C (-4°F to 158°F)
Storage with Battery Temperature (*5) -20° to 45°C (-4°F to 113°F)
RS5 Physical Properties Dimensions - HBII Micro 76 cm (30”) x 50 cm (20”) x 11cm (4.25”)
Dimensions - RS5 Unit 24 cm (9.5”) x 5 cm (2.2”)
Weight in Air - RS5 Unit 0.45 kg (1.0 lbs)
Weight in Water - RS5 Unit 0.15 kg (0.33 lbs)
Weight in Air - RS5/HBII Micro/Geode 3.63 kg (8.0 lbs)
Waterproof Rating IP67
DGNSS Horizontal RMS SBAS (WAAS): <0.3 m (0.98 ft)
2DRMS SBAS (WAAS): <0.6 m (1.96 ft)
Frequency L1, Multi-GNSS

*Additional notes
1 Maximum range will vary with environmental conditions.
2 Bottom velocity accuracy.
3 Seven hours continuous use, typical settings.
4 When using provided SonTek USB radio with antenna.
5 Remove batteries from the RS5 if storage temperatures exceed the storage temperature of the Li-Ion battery.

RSQ is a modern and user-friendly software interface. One measurement file includes all the data and meta data you need for each measurement. Export data to formats for Excel, Matlab and Google Earth. Do more with less time utilizing improved site templates. Experiment, learn or teach in the office or conference room as though you were in the field with the “demo” mode to playback recorded files simulating live data collection. Flexibility is key with RS5!

Now you can:

  • Save data on a PC, external drive or network.
  • Customize file naming.
  • Run and apply Extrap directly.
  • Sub-section transects.
  • Process *.riv/*.rivr files from RSL.
  • Choose three-beam switching when there is vertical bank interference.

RS5 Data vs Other ADCP Data

Get the Software

Options & Accessories

rQPOD for the RS5

rQPOD Remote Boat Surveying Package

Enjoy safe, remote-controlled surveying with the rQPOD remote boat surveying package! The rQPOD includes mechanized hardware that when installed on a floating platform, transforms it into a motorized vehicle for remote shore operation and collection of ADCP data. MORE...

RS5 Custom Backpack

RS5 Custom Backpack

Storing the RS5 is easy with this custom designed backpack. Simply lower the RS5 mast, and pop the RS5 in the bag - no disassembly required!

Geode Sub-Meter GPS Receiver

Geode Sub-meter GPS Receiver

With the Geode, you can easily collect real-time, sub-meter GNSS data without the huge price tag or complexity of other precision receivers. Get multiple correction sources provide precise, real-time data. Geode Product Sheet


External GNSS/GPS

For ultimate flexibility GPS flexibility in your region, upgrade your RS5-Basic system to the RS5-Max when you purchase an unlock code provided by SonTek. 


SonTek RS5: Performance Evaluation Through Field Data

SonTek RS5: Performance Evaluation Through Field Data

During the development of the RS5, discharge measurements were performed at controlled sites with different systems commonly used for those sites and conditions.

This Technical Note introduces certain technical aspects of the RS5 and highlights its capabilities in the field by showing data comparisons using other ADCP systems at a wide variety of different sites. The data shown in this Technical Note were used in the development of the RS5 acoustic algorithms and to optimize the performance for shallow discharge measurements.