Hach FLO-DAR AV Sensor, MODEL 4000-900

Description

The FLO-DAR AV Sensor provides an ideal solution for non-contact, maintenance-free portable or permanent sewer flow monitoring. The FLO-DARⓇ AV Sensor provides a revolutionary approach to open channel flow monitoring. It combines advanced Digital Doppler Radar velocity sensing technology with ultrasonic pulse echo depth sensing to remotely measure open channel flow. Use with the Hach FL1500 Series Flow Monitor for permanent monitoring. For portable use, the FLO-DAR can be connected to the Hach FL900 Series Flow Loggers (wireless or standard). Intrinsically safe models are available. During surcharge events FLO-DAR’s optional SVS electromagnetic sensor will continue to provide uninterrupted and accurate flow monitoring through dry and wet weather flows without the need for routine sensor cleaning or maintenance. FLO-DAR provides the user with highly accurate flow measurements under a wide range of flows and site conditions. By measuring the velocity of the fluid from above, FLO-DAR eliminates accuracy problems inherent with submerged sensors including sensor disturbances, high solids content and distribution of reflectors. As the sensor is mounted above the flow, personnel have little or no contact with the flow during installation. Future sensor removal and replacement can be done without the need for confined space entry. Operates in the most difficult conditions including flows with high solids content, high temperature, shallow and caustic flows, large man-made channels, and high velocities up to 20 ft/s. No lost data with non-contact, above the flow sensor that is unaffected by fouling due to debris and grease. FLO-DAR sensor accuracy and long-term stability (up to 3 years without need for site calibration) from low flow depths up to surcharge conditions has been independently verified many times over the years, including a formal evaluation by the Alden Research Laboratory, Inc. and recent field evaluations done by municipalities and consulting engineering firms.

Features

• Accurate flow measurement


• Non-contact sensor eliminates lost data


• Easy installation and maintenance


• Long-term stability (up to 3 years without need for site calibration)


• Perfect solutioon for difficult flow conditions