FLO-DAR Sensor

The FLO-DAR® AV Sensor provides an ideal solution for non-contact, maintenance-free portable or permanent sewer flow monitoring. Flo-Dar incorporates Doppler Radar velocity and Ultrasonic depth sensors for use in Open Channel flow applications. Portable Flo-Logger optional.


Using advanced digital Doppler radar velocity-sensing technology, along with ultrasonic level-sensing, the FLO-DAR revolutionizes open-channel flow monitoring by measuring from above the flow. This means it can more effectively provide highly-accurate flow data under a wide range of challenging flow and site conditions, including sensor disturbances, high solids content, high temperature, shallow and caustic flows, large man-made channels, and high velocities of up to 20 ft/s, to name a few.

And because the FLO-DAR is mounted above it all, personnel have little or no contact with the flow during installation. In fact, future sensor removal or replacement can even be done without the need for confined space entry. Talk about a time saver.

Lastly, for those times when a surcharge event does raise the flow to sensor level, the FLO-DAR’s pressure level sensor and optional electromagnetic Surcharge Velocity Sensor will continue to provide uninterrupted and accurate flow data. All of this mean less need for routine sensor cleaning or maintenance, and more consistent flow data for your analysis. And that’s a good thing.

  • Accurate Flow Measurement
  • Non-Contact Sensor Eliminates Lost Data
  • Easy Installation and Maintenance
  • Independent Accuracy / Long-Term Stability Verification
  • Perfect Solution for Difficult Flow Conditions



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