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Product Name:SonTek-SL
Description:Inspired by the need for a simple way to measure water velocity and level in open channels, the SonTek-SL (affectionately known as the “Side-Looker” ) has earned worldwide acceptance as a long-term monitoring solution. 3G models use SonTek’s proprietary SmartPulseHD®.
Year of last update:2014
Length [m]:
Width [m]:
Height [m]:
Weight in air [kg]:
Weight in water [kg]:
Min. operating power [V]:7
Max. operating power [V]:15
Max. operating depth [m]:30
Max. battery lifetime [days]:220
True Bottom Tracking Capability:N
Max. speed of boat [km] :
Max. range to bottom [m]:
Doppler Current Profiler 
Center working frequency [kHz]:500 or 1500 or 3000
Max. typical profiling range [m]:120
Number of beams:3
Nadir angle [deg]:25
Max. Number of cells per beam:128
Min. blanking distance [m]:0.1
Lost data at far boundary [%]:0
Max. ping rate [Hz]:1
Min. vertical resolution [m]:
Min. cell size [m]:0.04
Max. cell size [m]:30
Cell overlap [%]:50
Max. velocity [m/s]:7
Speed dependent uncertainty: horizontal [%]:1
Speed independent uncertainty: horizontal [cm/s]:0.5
Speed dependent uncertainty: vertical [%]:1
Speed independent uncertainty: vertical [cm/s]:0.5
Surface reference capability:N
Surface current measurement:Y
Compensation for sound speed:Y
Single ping rejection of outliers :Y
Uncertainty of single ping horizontal velocity for default cell size [cm/sec]:
Uncertainty of single ping vertical velocity for default cell size [cm/sec]:
Standard Sensors 
Temperature: min [°C]:-5
Temperature: max. [°C]:60
Temperature: uncertainty [°C]:0.1
Tilt: max. [deg]:60
Tilt: uncertainty [deg]:1
Compass type :Magnetic
Deployment method 
Moving vessel:N
Bottom mount:N
Inline string mooring:N
Data Buoy:N
Marine structures:Y
Auxiliary Sensors 
Acoustic modem:N
Relocation of transponder:N
Wave direction:N
Speed of sound:N
Other specifications 
Real-time interfacing:RS232; RS422; SDI-12; Modbus; Analog Output (current)
Min. external power [Voltage]:110
Max. external power [Voltage]:240
Max. cable length [m]:1500
Baudrate [kbit/s]:115.2
External battery container:Y
Data acquisition software and processing software:Variable: dependent on application; ViewArgonaut
Typical applications:Side-looking/horizontal applications for open channel flow; Ports & Harbours; discharge monitoring; vessel traffic systems; measurements from bridges or fixed structures

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Supplier Information
  • SonTek

  • 9940 Summers Ridge Rd
  • 92121-3091 San Diego
  • California
  • United States of America



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