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Generally when we look at applying a flume to measure flow we are more concerned that the flow is not too energetic.  Sometimes, however, the flows can be too slow and too solids laden. When this happens on low flows where the sediment load is high (and the sediment heavy),…

It isn’t always desirable or practical to measure industrial effluent flows below grade.  For those applications, Openchannelflow takes our proven Redstone fiberglass enclosures and nests a flow-measuring flume or mag meter. 

Parshall Flume Flow Monitoring Manholes from Openchannelflow take the tried and true Parshall flume and factory integrate it into a fiberglass manhole.  The resultant structure is perfect for monitoring industrial discharges, municipal sewers, and dam seepage on below grade…

When installed in manholes or potential pedestrian traffic areas, flow monitoring flumes can be a hazard.  A typical flume installation represents an open trough that that an operator can inadvertently step or fall into. On large flumes with large pipe stubs, the danger can…

A watershed is an area of land that feeds all surface and ground water into a single body of water (stream, river, lake, etc.).  Watersheds can combine to form progressively large watershed networks that drain into progressively larger bodies of water. Watersheds are…

One of the problems that we see again and again is confusion as to where the flow should be measured in a Parshall flume.  We've seen flow measured: In the throat In the converging section (random location) In the converging section at a distance 2/3 the length of the…

One of the requirements of accurate flow measurement with a Parshall flume is a tranquil flow approaching the flume.  Poorly balanced, surging, or turbulent flows will adversly affect the systems accuracy for both instantaneous and totalized flow.

Many times flumes have to be installed in applications where the flow cannot be properly conditioned before it enters the flume.  For those applications, Openchannelflow offers Energy Absorbers and Tranquilizing Racks to helps dampen and condition the flow entering the…

Insulated flume covers from Openchannelflow can help to provide better flow data during cold weather periods by eliminating frost / ice build up on the flow meter sensor as well as insulate the space above the flume.  When used in conjunction with a strip, pipe, or immersion…