Parshall flume

Parshall flume

[′pär·shəl ‚flüm]
(engineering)
A calibrated device for measuring the flow of liquids in open conduits by measuring the upper and lower beads at a specified distance from an obstructing sill.
References in periodicals archive ?
Tenders are invited for provide and install two parshall flume false bottom inserts to improve flow characteristics through the flumes.
The Parshall Flume is the most popular for its range of flows and ability to pass flow without taking much energy from it.
Ultrasonic Modules (Isco 710) mounted over each Parshall flume used ultrasonic reflection to measure water level.
Runoff measurements and calculations were subject to instrumental errors including head measurement by the pressure transducer and inaccuracy of the Parshall flume head-flow rate relationship (Equation 1).
Two methods were used in order to measure stream discharge: an area-velocity method using a flow meter and a Parshall flume.
Visual observations of the Parshall Flume indicate that the system is intermittently operating under submerged conditions.
the purpose of this project is design a structure to replace the existing 10-ft parshall flume located on the colorado river downstream of granby dam.
Measuring the flow of liquids is done in open channels and involves the use of a weir or Parshall flume or various modifications of these devices.
Construction of backwash lagoon parshall flume flow meter, RTU and wireless
Tenders are invited for Providing & fixing of fiberglass reinforced plastic (FRP) improved Parshall flume for accurate measurement of water flowing through open channels with prefabricated fiberglass lining mounded engraved gauge marking in I it/see and also in centimeter including discharge tabic, capacity marking, flow direction pipe stiffeners, hold fasts sand treatment on the backside of flume with side chamber provider
Facilities used at Keegans Bayou include coarse bar screens, a Parshall flume, grit removal, nonaerated influent channel, fine bubble aeration, secondary clarification, aerobic sludge digestion, and centrifuge dewatering.
Other velocity control devices for the rectangular channel are the Sutro weir and the Parshall flume.