Blog

For industries required to measure and / or sample their effluents prior to discharging to a municipal sewer system or surface water, finding sufficient area to install a primary device can be a struggle.  In many instances, it is difficult to find a site that provides…

Of all of Openchannelflow's products, our Weir Boxes receive the most calls for customization; more so than our flumes, manholes, or even equipment shelters.  Some of the customization possible includes:   Materials of construction Flow capacity  Flow…

Openchannelflow has designed a bubbler flow meter tube for flumes and weirs that is unique in the marketplace.  The tube is one continuous piece of thick walled tubing.  The top of the bubbler tube - where the traditional compression coupling is found - is swaged to…

The typical bracket used to mount an ultrasonic sensor over a flume or weir is a contractor fabricated one-off assembly.  These assemblies often mount the ultrasonic sensor too high, too close to the flume / weir sidewall, or aren't sufficiently rigid - making accurate…

Openchannelflow offers bolt-down covers as an option for flumes and weirs in fiberglass, Lexan, galvanized / stainless steel.  The covers are suitable whether the flume or weir is above grade, below grade, or installed in a Packaged Metering Manhole.  For…

Packaged Metering Manholes (PMMs) factory integrate a flow measurement flume / weir into a fiberglass manhole to provide a complete, turn-key solution to monitor industrial and municipal flows.  Openchannelflow Packaged Metering Manholes come complete and ready for…

The Iowa Institute of Hydraulic Research has posted an excerpt of one of their older videos, Fluid Motion in a Gravitation Field:  Flow Over Weirs.  The video, developed with the support of the National Science Foundation, covers, among other things, the need for…

In its simplest form a Packaged Metering Manhole (PMM) consists of a primary device (typically a flume or weir) molded into a fiberglass (FRP) manhole.  By directly factory integrating the primary device, a single-piece, drop in-place flow monitoring solution is…

Portable weir plates have always been a great way to stretch your research dollars.  The modular design allow you to tailor your flow measurement set-up with the need for costly custom construction.  Building upon what was already a successful product, we've…

Bubbler flow meters can be an excellent flow meter choice when measuring flows in flumes or weir boxes.  Bubbler flow meters are unaffected by wind, foam, steam, and floating solids and provide a high level of measurement accuracy.  Adapting bubbler meters for use with…

As we’ve seen before in our comparison of H-flume and Parshall flume manufacturers, not all “equal” products are just that…equal. Here we compare the construction details of Packaged Metering Manholes.  Packaged Metering Manholes take proven open…

Customer - Lonza Mapleton AMEC in Peoria, IL approached Openchannelflow with a unique application:  an industrial customer of theirs needed to measure storm water flows in an existing earthen channel.   Find out how Openchannelflow helped AMEC solve their customers…