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Data Delivery Services

Portable Flow Meters

HACH Redundant-Level
Flow Monitoring System

Ensure reliable and accurate level data with
Hach’s FL900 redundant-level system.


With Hach’s FL900 Series plug-and-play flow meters, you can pair a Hach submerged area/velocity sensor with an US9003 in-pipe ultrasonic level sensor for integrated redundant‐level flow monitoring.

Redundant-Level Monitoring System Features

  • Includes US9003 in-pipe and submerged area/velocity sensor with AV9000 Analyzer Module
  • Flexible FL902 Series Plug-and-Play Flow Logger System
  • Utilize up to three velocity and two level sensor technologies for future projects
  • Sensor/Logger LED indicates proper installation/operation prior to leaving the site to decrease site time and increase crew safety
  • Wireless models available that provide 24/7 real-time data viewing, alarms and remote programming that eliminate site visits to collect data or adjust meter settings

Ideal Applications

  • Combined Sewer Overflows (CSO)
  • Billing / Custody Transfer
  • Inflow and Infiltration (I&I) Studies
Online Calc

Online Calculator

On-line open channel & full-pipe flow calculator for pros in the water & wastewater field.

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P.O. Box 389, Loveland, CO 80539-0389 U.S.A.

800.368.2723 Toll Free US & Canada • 970.622.7120 Outside US & Canada • 800.635.1230 24/7 Technical Support

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