This is where it all starts. Our meters are the brains of the whole operation. They are the link between collecting superior flow data and conveying it to you in a convenient, reliable, and highly-functional manner. With options for stationary, portable, permanent or temporary usage, you have a choice for every scenario. And from extremely rugged portable loggers designed to handle all the abuse a manhole can dish out to highly connectable stationary controllers, the Hach line of flow meters have been perfected through decades of constant in-field use and innovation. But we aren’t stopping there. We continue to pioneer usage of new technologies, including wireless communications, to make field-worthy, state-of-the-art logging solutions for our industry.


Hach FL1500 stationary open channel flow meter provides easy programming with its large color display and intuitive user interface

Hach FL1500 Series Flow LoggerBew

Thanks to the most flexible sensor options of any Hach logger and up to four sensor ports on the advance model, the FL1500 Flow Logger delivers versatile sensor options to accommodate your flow measurement applications.

Hach FL900 Series Flow Logger

With innovative wireless communication options with free data hosting, longer battery life, and plug-and-play sensor ports, the Hach FL900 is designed to reduce your monitoring costs, increase your efficiency, and provide better data with less hassle than you ever thought possible.

Hach FL900AV Flow Meter

Augment the accuracy of your data from challenging sites by adding an AV9000 Analyzer Module to the Hach FL900 Series Flow Logger. Combined with a Sigma Submerged AV Sensor, this monitoring system is tried-and-true meeting state-of-the-art.

Hach sc200™ Universal Controller

A low-cost ultrasonic level-monitoring solution that, in combination with a hydraulic structure, provides accurate flow data capture in permanent scenarios, and is also compatible with Hach Company’s water quality sensors.


Hach FH950 Handheld Flow Meter

The perfect handheld device for profiling rivers, streams and channels, providing redundant verification of wastewater flow data, or selecting an optimal site for flow metering.

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