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User Daniel Kelly has posted two videos on Youtube that show problems with insufficienlty conditioned flow entering a Parshall flume and an attempt to fix it. The flume (and flow meter), measuring treated effluent, was under-recording the effluent flows. Prior to the attempted…

Watershed runoff monitoring usualy involves severa standard pieces of equipment.  Here we provide a snapshot of a project headed by Penn State University at Shaver's Creek Environmental Center. The equipment used includes:  automatic samplers, combination pressure…

Parshall flumes are a class of short throated flumes.  Originally developed in the 1920's, the Parshall flume has become the most researched style of flume leading to its wide acceptance and use in a variety of applications.  In North America, the Parshall flume is…

In our blogs, we frequently highlight our abilities as a:  "...manufacturer of primary devices, including Parshall flumes, for the devices for the measurement, conditioning, and control of water in open channels..."   But what does it actually mean to be a Parshall…

While it is desirable for a flume to have free, unimpeded discharge, it can be difficult to guarantee this under all flow conditions.  H Type flumes have particularly low resistance to submergence, with submergence transitions of only 30%. The submergence transition of an H…