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
Redundant-Level Flow
Monitoring System
Sensor
Monitors
FL900 Cellular Wireless Flow Logger
Software
Manuals/Documentation
FL900 Mounting Bracket Installation Sheet
FL900 Series Flow Logger User Manual
AV9000 Manual European Version

