SonTek-SL Series

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 or "SL") has earned worldwide acceptance as a long-term monitoring solution. Now, with two new (3G) models turbo-charged by our proprietary SmartPulseHD®, the SonTek-SL features accessories, mounting options, software, and a variety of integration formats to ensure it fits your application.

Designed specifically for side mounting on bridges, canal walls, or riverbanks, the SL's SLEEK, low-profile housing makes installation easy.  With three models to choose from, the SL can be used in channels as small as you can jump across to rivers as wide as the Amazon. Ultra-narrow beam widths combined with unmatched side lobe suppression provide the SUPERIOR acoustic directivity necessary for achieving maximum horizontal range free of interference from surface or bottom boundaries.

• Overview

  First-time users can collect test data within minutes of receiving the SonTek-SL. Deployments require only a few minutes to configure the SL and start collecting data. This system provides the highest quality Doppler velocity data without requiring the user to become an expert on Doppler technology.

  FEATURES

  Water Velocity and Level: Water velocity, level, flow, and total volume-multiple parameters from one easy-to-use instrument. Acoustic Doppler profile of velocity data and acoustic water level offers the most accurate, reliable measurements.

  SmartPulseHD®*: An intelligent algorithm that looks at water depth, profiling range, velocity, and turbulence, and then acoustically adapts to those conditions using pulse-coherent, broadband, and incoherent techniques.  Best data possible under any condition.  High-def cell sizes down to 4 cm.

  Compact, Hydrodynamic Design: Incredibly lightweight and easy to transport and mount.  Slim shape is easy to maintain, stays clean, increases available sample area, and fits into more places.

  Water Velocity Profiling: Customizable, flexible setup options to suit a variety of applications. 3G models offer 128-cells for high-resolution and detailed profiles.

  Acoustic-Pressure "Duo" Water Level (3G models only): Not only redundant sources of water level, the acoustic vertical beam and pressure sensor continually self-check, and pressure data are auto-corrected to keep atmospheric offset negligible.

  Versatile, Easy Mounting:  Easy-access side mounting reduces concerns over personnel safety, lowers operational cost by avoiding divers and boats, avoids interruption in facility operations, and avoids interruption in data and water delivery to clients and stakeholders. 

  Wave Spectra Option: Integrated pressure sensor calculates and outputs wave height and period, in real-time. (SL-500 model only.)

  *SL1500/3000 3G models only. Patent pending.

• Specifications

  Specifications	SL3000 (3G)	SL1500 (3G)	SL500
  Sampling range•	0.1 to 5m | 0.3-17 ft	0.2 to 20m | 0.7-66 ft	1.5 to 120m | 5-400 ft
  Minimum Channel Width	0.5m | 1.6 ft	1.0m | 3.3 ft	6.5m | 21 ft
  Acoustics — Horizontal Beam Width••	1.4°	1.4°	1.4°
  Acoustics — Vertical Beam Width••	1.4°	2.9°	3.8°
  Acoustics — Side Lobe Suppression†	>60dB	>60dB	>60dB
  Multi-cell Velocity Profiling	Up to 128 cells	Up to 128 cells	Up to 10 cells
  SmartPulse HD®	Yes	Yes	N/A
  SonTek Compass/Tilt	Tilt	Tilt	Compass/Tilt
  Internal Nonvolatile Memory	4GB	4GB	4MB
  Water Velocity — Range	±7 m/s | 23 ft/s	±7 m/s | 23 ft/s	±6 m/s | 20 ft/s
  Water Velocity — Resolution	0.001 m/s | 0.003 ft/s	0.001 m/s | 0.003 ft/s	0.001 m/s | 0.003 ft/s
  Water Velocity — Accuracy	±1% of measured velocity; ±0.005 m/s | ±0.015 ft/s	±1% of measured velocity; ±0.005 m/s | ±0.015 ft/s	±1% of measured velocity; ±0.005 m/s | ±0.015 ft/s
  Water Level — Vertical Beam Range	0.1 to 5m | 0.3 to 17 ft	0.15 to 10m | 0.5 to 33 ft	0.2 to 18.0m | 0.7 to 59 ft
  Water Level — Vertical Beam Accuracy	Depth <3m: ±0.3cm | 0.01 ft Depth ≥3m: ±0.1%	Depth <3m: ±0.3cm | 0.01 ft Depth ≥3m: ±0.1%	Depth <6m: ±0.6cm | 0.02 ft Depth ≥6m: ±0.1%
  Pressure Sensor — Range	30 m	30 m	20 m
  Pressure Sensor — Accuracy FS‡	0.10% FS	0.10% FS	0.25% FS
  Wave Height Spectra	No	No	Optional
  Temperature Sensor — Resolution	± 0.01º C	± 0.01º C	± 0.01º C
  Temperature Sensor — Accuracy	± 0.2º C	± 0.2º C	± 0.01º C
  Power Input	9-15 VDC	9-15 VDC	7-15 VDC
  Power Consumption§	0.8 W	1.0 W	0.7 to 1.0 W
  Weight in Air	0.45 kg | 1.0 lb	0.90 kg | 2.0 lb	6.0 kg | 13.2 lb
  Weight in Water	0.15 kg | 0.3 lb	0.2 kg | 0.5 lb	1.1 kg 2.5 lb
  Pressure Rating & Maximum Depth	30 m | 98 ft	30 m | 98 ft	30 m | 98 ft
  Mounting Plate Dimensions	25 x 17 x 1 cm | 10 x 6.7 x 0.4 in	25 x 17 x 1 cm | 10 x 6.7 x 0.4 in	35.5 x 22.9 x 1.5 cm | 14 x 9 x 0.6 in
  Operating Temperature	-5° to 60°C | 23° to 140°F	-5° to 60°C | 23° to 140°F	-5° to 60°C | 23° to 140°F
  Storage Temperature	-10° to 70°C | 14° to 148°F	-10° to 70°C | 14° to 148°F	-10° to 70°C | 14° to 148°F
  Communications — Standard Protocols	RS232/SDI-12/Modbus	RS232/SDI-12/Modbus	RS232/SDI-12
  Communications — Software	SonTek-SL: Intelligent Flow	SonTek-SL: Intelligent Flow	ViewArgonaut
  Communications — Analog Output Option	Integrated on Flow Display	Integrated on Flow Display	Separate AO module
  Communications — Flow Display Type	SonTek Flow Display	SonTek Flow Display	N/A

  
  ^•Actual maximum range depends on environmental conditions.
  ^••Beam width reported at half power level (-3dB).
  ^†Side lobe suppression improves the aspect ratio of the instrument enabling greater measurement range in shallower water.
  ^‡ FS = Full Scale.
  ^§ Power consumption will be higher if Flow Display is enabled.

• Accessories

  

  SL/IQ Series Dummy Plug Kit

  Dummy Plug Kit

  

  SL/IQ Series Battery Hook-Up Cable

  Battery Hook-Up Cable

  

  SL/IQ Series Communication Cable

  Communication Cable

  

  SL/IQ Series Cable Adaptor

  Cable Adaptor

  

  SL/IQ Series Power Supply

  Power Supply

  

  SL Series Mounting Plate

  Mounting Plate

  

  SL Series Tool Kit

  Tool Kit

  

  SL Series Splitter Cable

  Splitter Cable

  

  SL500 Communication Cable

  Communication Cable

  

  SL500 Mounting Plate

  Mounting Plate

  

  SonTek Power Supply

  Power supply, 15VDC, 40W

  

  SonTek Power Cord Kit (International)

  Power cord kit (International)

  

  SonTek Power Cord (U.S.)

  Power cord (U.S.)

  

  SonTek Locking Sleeve

  Locking Sleeve

  

  SonTek Connector

  Connector

  

  SonTek Battery Pack

  Battery Pack

• Brochures and Catalogs
  • Current Profiling Solutions
  • SonTek-SL Series Brochure
• Guides
  • SonTek Instrument Accessories