SonTek-IQ® Series

Ideal for monitoring flows in canals, culverts, pipes, and natural streams, the SonTek-IQ starts with a custom flow algorithm derived from hundreds of field measurements. Four velocity beams profile water velocity in 3-D - both vertically and horizontally - ensuring complete coverage of the velocity field. The built-in pressure sensor and vertical acoustic beam work in tandem to measure water level. Simply input the channel geometry using the intuitive SonTek-IQ software and you are outputting flow data in minutes.

  • Features
  • Specifications
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Capable of working both in man-made as well as natural channel, the SonTek-IQ can collect flow (area-velocity) and volume data in as little as 8 cm (3 in) of water. Its five-beam pulsed Doppler design is Modbus, SDI-12, RS232 and Analog ready. Even better news - the SonTek-IQ installs with limited or no earthworks. With the SonTek-IQ, expect to get quality data for quality decision making.

  • Self contained all-in-one design
  • Proprietary flow algorithms for irrigation canals, natural streams and pipes
  • Uses SonTek's exclusive SmartPulseHD adaptive sampling
  • Self-calibrating water level using vertical acoustic beam and pressure
  • Standard package includes the SonTek-IQ, IQ software, easy mounting hardware, cable, adaptor and power supply

The SonTek-IQ Standard, the SonTek-IQ Plus and SonTek-IQ Pipe all operate at 3 MHz. The Standard model works in depths up to 1.5 m (5 ft), while the Plus and Pipe model are ideal for water depths up to 5m (16 ft). The SonTek-IQ Plus/Pipe also incorporates advanced post-processing functions, providing deeper insight into your flow and volume data. All models use SonTek's proprietary algorithm SmartPulseHD.

Application Regular Canals Open Channels Pipes & Culverts
Acoustics Beams — Along-Axis (2) 25° off vertical axis, along axis of channel 25° off vertical axis, along axis of channel 25° off vertical axis, along axis of channel
Acoustics Beams — Skew (2) 60° off vertical and 60° off center axis of channel 60° off vertical and 60° off center axis of channel 37° off vertical and 45° off center axis of channel
Velocity — Sampling Range 0.08 – 1.5 m | 0.3 - 5 ft 0.08 – 5.0 m | 0.3 - 16 ft 0.08 – 5.0 m | 0.3 - 16 ft
Number of cells 1 Up to 100 Up to 100
Cell Size Dynamic integrated 2 cm – 10 cm | 0.8 - 4 in 2 cm – 10 cm | 0.8 - 4 in
Velocity — Range ±5 m/s | 16 ft/s ±5 m/s | 16 ft/s ±5 m/s | 16 ft/s
Velocity — Resolution 0.0001 m/s | 0.0003 ft/s 0.0001 m/s | 0.0003 ft/s 0.0001 m/s | 0.0003 ft/s
Velocity — Accuracy ±1% of measured velocity, ±0.5 cm/s | 0.2 in/s ±1% of measured velocity, ±0.5 cm/s | 0.2 in/s ±1% of measured velocity, ±0.5 cm/s | 0.2 in/s
Advanced Data Reprocessing N/A Yes Yes
Increased Number of Data Fields N/A Yes Yes
Vertical Beam Range1 0.05 – 1.5 m | 0.2 - 5 ft 0.05 - 5.0 m | 0.2 - 16 ft 0.05 - 5.0 m | 0.2 - 16 ft
Water Level Accuracy 0.1% of measured depth or ±0.003 m (0.01 ft), whichever is greater 0.1% of measured depth or ±0.003 m (0.01 ft), whichever is greater 0.1% of measured depth or ±0.003 m (0.01 ft), whichever is greater
Pressure — Range2 30 m | 98 ft; 42 psi 30 m | 98 ft; 42 psi 30 m | 98 ft; 42 psi
Pressure — Accuracy 0.1% of full scale 0.1% of full scale 0.1% of full scale
Communications RS232, SDI-12, Modbus, Analog (via optional Flow Display) RS232, SDI-12, Modbus, Analog (via optional Flow Display) RS232, SDI-12, Modbus, Analog (via optional Flow Display)
Data Storage 4GB (approximately 1-yr) 4GB (approximately 1-yr) 4GB (approximately 1-yr)
Operating Temperature -5 to 60°C | 23-140°F -5 to 60°C | 23-140°F -5 to 60°C | 23-140°F
Temperature & Tilt Sensors Yes Yes Yes

1 Water level measured primarily with vertical beam, with pressure sensor for redundancy.
2 For use in pressurized pipes. Housing rated to 42 psi.

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