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PARSHALL, PALMER BOWLUS, AND "H" FLUMES
Primary Devices for Open Channel Flow Measurement
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FEATURES:
- The Palmer-Bowlus constricts the flow vertically and horizontally and can be molded to be inserted into an existing half-round pipe.
- The Parshall flumes constrict primarily horizontally, and are design for rectangular or trapezoidal channels.
- "H" flumes attach to the ends of pipes where the water is free-falling.
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Product Description
Global Water offers water flumes constructed of high
quality polyester resin and fiberglass. These flumes are durable, highly accurate, and easy to
install.
Global water offers primary device flumes that constrict an open channel's flow either horizontally or vertically
or both. Once the flume flow is backed up behind the constriction, there is a defined relationship
between the upstream water level and the open-channel flow through the constriction. This relationship
can be determined either by an equation or a look-up table.
Global Water offers three standard molded flumes: the Palmer-Bowlus Flumes, the Parshall Flumes, and the
H Flumes.
- The Palmer-Bowlus constricts the flow vertically and horizontally and can be molded to be inserted into
an existing half-round pipe. Click HERE for Diagrams and Palmer
Bowlus flume table of Dimensions.
- The Parshall flumes constrict primarily horizontally, and are design for rectangular or trapezoidal
channels. Click HERE for Diagrams and Parshall flume table of
Dimensions/Flow Data.
- H flumes attach to the ends of pipes where the water is free-falling. Click
HERE for Diagrams and H-flume table of Dimensions.
Installation
For a flume to work properly, there must be freely flowing water out of the flume. The flow cannot be
backed up downstream or the reading will be erroneous and misleading. Make sure that you have
free-flowing water without major inflows downstream of the flume. The open channel flow measurement
can be made by using a float in an adjacent stilling well, a pressure transducer,
or by an ultrasonic sensor.
Options & Prices
Contact Global Water directly
to obtain a quote for the following flumes:
Palmer-Bowlus Flume
U shaped channel flume specifically designed for monitoring flows in pipes.
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$Varies |
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Parshall flume
Industry standard rectangular flume used to monitor streams and channels.
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$Varies |
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H flume
Used to monitor free fall outflow from pipes or channels when a Palmer-Bowlus or Parshall Flume will not work.
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$Varies |
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ACCESSORIES
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Flume-SWP2 2" Stilling Well Port
All stilling well ports will be on the left hand side, facing down stream, unless otherwise specified. A
2" stilling well is required for use with submersible sensor.
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$95 |
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Flume-SW2 2" Stilling Well
2" Stilling Well for use with the 2" stilling well port.
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$41 |
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Flume-SG Staff Gauge
All staff gauges will be in inches unless otherwise specified.
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$133 |
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Flume-BT Bubbler Tube
1/4 inch OD stainless steel.
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$109 |
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Flume-SW8 Attached 8" Stilling Well
All stilling wells will be on the left hand side, facing down stream, unless otherwise specified.
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$930 |
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Flume-WW Wingwalls (pair)
45 degree angle flat wing walls.
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$743 |
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Flume-CAC Concrete Anchor Clips
Charge is per clip, the number of clips varies with flume size. Example Parshalls over 12 inch normally require 8 clips.
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$22 |
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RELATED PRODUCTS
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FC200 Open Channel Flow Monitor
Monitor and display total and current flow, datalogging options available.
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$1,495 |
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WL16 Water Level Logger
Record water level and using a depth to flow table convert the data into flow data.
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$835 |
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FP101 Flow Probe
Water velocity probe for determining open channel flow.
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$730 |
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