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Do you need more flow capacity than a given flume will handle but are tight on space? If so, one option might be to look at using an EXTENDED HEIGHT flume. Extending the sidewalls can allow a flume to pass more flow without using a larger flume, which will allow you to pass more…

One of the advantages of using a device like a Parshall Flume is that, properly installed and applied, there is NO NEED TO CALIBRATE THE FLUME! Now that doesn’t meant that you don’t need to periodically check to make sure the Parshall Flume isn’t clean and level, or that…

One of the more misunderstood flumes used to measure open channel flow is the Montana (Short Parshall) Flume…but it doesn’t have to be!

Openchannelflow offers a range of Parshall Flumes for a variety of flow measurement applications in Hawaii. The primary use of Parshall Flumes in Hawaii is to measure sanitary / wastewater flows, but the flumes are also used to measure industrial discharge and water use /…

While it's important to understand the sections of a flume and how they work, it's also important to understand the functional elements of a flume and the purposes they serve. Dimensional bracing is usually installed at the top of the flume to make sure that the flume…

Foam in flumes or weirs is a headache. It's a source of measurement error, and it frequently requires additional maintenance and monitoring. This article is not intended to discuss the causes of foam (other than an overview); instead is intended to provide practical solutions…

Over the years, Parshall Flumes have become common sights at wastewater treatment plants (WWTPs) across the US. The flumes can be found at a number of points throughout the plant. Many plants rely on Parshall Flumes to measure headworks flows. Depending upon the plant size, the…

In space constrained applications it can be difficult to get the upstream conditions necessary for accurate flow measurement with a Parshall flume. While flow conditioners - usually perforated plates or stainless steel fingers - can be used in some installations, they aren't…

When using a flume to measure pipe flow, the incoming pipe slope is a critical factor. Too great a slope and the flow into the flume will be too energetic and the flume won't produce accurate results.

Fiberglass Flow Metering Manholes from Openchannelflow are a great solution to the problem of needing to measuring below ground flows. The manholes are light weight, corrosion resistant, watertight, and come with flume, weir, or mag meter already factory integrated.

It's a common for a treatment system operator need to measure the flow of sewage in a wastewater collection system. These flows are below grade and are usually under open channel (non-full pipe) conditions. In some cases, existing manholes or vaults can be used. Into these a…

Most of the flume styles currently used to measure the flow of water in non-full pipes were not originally conceived to handle such flows. While engineered transitions – end adapters – have been developed for some of these flumes, many installations have site-formed…