SI-3L SVR Fixed Mount Surface Velocity Radar

The weatherproof SI-3L SVR is designed specifically to measure the speed of streams and rivers to give you precise and reliable speed measurements from cross-over bridges or posts on the banks of rivers. Ideal for measurements from remote locations and long distance monitoring.

The SI-3L SVR wide speed range makes it perfect for both slow speed agricultural irrigation and emergency high speed flow monitoring.



  • Speed Accuracy: 0.1 ft/s, 0.1 m/s. 0.1 MPH, 0.1 km/h
  • Speed Range: 0.1 – 65 ft/s, 0.1 – 20 m/s, 0.1 – 45 mph, 0.1 – 70km/h
  • Beamwidth: 6.5 x 5.5 degrees (H x V)
  • FCC Part 15 (no license required)
  • Angle Compensation – Vertical: 0 – 45 degrees fixed, Horizontal: 0 – 45 degrees user selectable
  • Communication Interface: RS-232, RS-485 (specify at time of order)
  • Voltage Requirement: 10.8 – 24VDC
  • Current Requirement: 150mA (nominal)
  • Dimensions: 6.125 x 6.5 x 1.75″ (15.6 x 16.5 x 3.8cm) (H x W x D)
  • One year parts and labor warranty

All Products & Documentation

Law Enforcement

Public Safety

Water Surface Velocity

Special Application Doppler

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Decatur Electronics is the premiere manufacturer of police radar, traffic safety equipment and speed measurement devices in the world. Contact us today to learn more about our cutting-edge technology, operator friendly features and product applications. Find a representative near you or call +1 800 428-4315

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