ACCURA-FLO YOUR SILENT PARTNER IN FLOW

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The best way to solve a problem is to prevent it.

That's especially true in the water measurement industry. Thats why Accura-Flo by Moore Sailboats is the first choice in water measurement systems. Accura-Flo delivers accuracy and dependability for the life of the site. Any flume will work 'in theroy'. Only Accura-Flo work right every time without need for rework or special concrete forms. Save time, money, and make the engineer or plant manager happy all at the same time. Accura-Flo flumes have been selected by leading consulting engineers, public agencies, and industrial plants for use in:

  • Wastewater Treatment Plants
  • Industrial Waste Systems
  • Irrigation Measurements
  • Municipal Waterworks
  • Metering Stations
  • Site Run-off Application


Parshall Flumes

The Parshall flume was develoed by the U.S. Soil Conservation Service in the 1920's to measure irrigation water flow. Its principle advantages include low head loss, self cleaning capability, and its ability to withstand relatively high degrees of submergence without affecting the rate of flow. Parshall flumes are best used in channels having rectangular cross-sections. Extreme care must be taken when mating them to circular channels

Options:

Accura-Flo Parshall flumes are available in one-piece construction or in easily assembled panel design. When access to the proposed location is limited or the overall size of the flume makes transportation difficult, the flumes are constructed of two or more pieces. Other options include:

  • Inlet/outlet adapters for circular channels
  • Nested inserts for greater measuring range
  • Stilling wells
  • Staff gauges
  • 45 degree wing walls
  • Bubbler tubes
  • 1/2" to 2" ports

Palmer Bowlus Flumes

The Palmer Bowlus metering flume has beedn widely usedsince 1937 for measuring water and wastewater in open channels or pipelines that are not under pressure. Some of its most important characteristics include measurement accuracy, low head loss, minimum flow restriction and ease of installation in pipelines.

The Palmer Bowlus is normally installed in a "U" shaped channel fed by a pipeline such as storm drains and sewers. This convenient flume requires little redesign or special modification of circular conduits for installation.

Accuracy:

The accuracy of the Palmer Bowlus flumes is comparable to that of the Parshall or other types of Venturi flumes. Research indicates that within the normal range of flows (from under 10% to 90% of flume capacity), measured flow rate is usually within +/- 3% of theoretical flow rate. 

 

Options:

  • Sectional designs for limited access
  • 2D & 4D channel options
  • Channels inserts
  • Stilling wells
  • Staff gauges
  • Wide variety of instrument accessories

Low Flow Flumes

Low Flow flumes are a proprietary flume, unique to Accura-Flo. The "Low Flow" is a variation of the Palmer Bowlus flume. It was developed to give improved resolution of low flow in circular conduits.

Options:

  • Sectional designs foe limited access
  • 2D &4D channel options
  • Channel inserts
  • Stilling wells
  • Staff gauges
  • Wide variety of instrument accessories

Trapezoidal Flumes

Trapezoidal flumes were originally developed by the U.S. Soil Conservation Service to measure flows in irrigation channels. Trapezoidal flumes are currently being used for sewer flow monitoring in applications with very low minimum flows. The lack of a raised sill coupled with the high velocities in the throat enable these flumes to clear sediment effectively. The trapezoidal throat shape affords floating debris the opportunity to rise and pass through a more open cross-section.

Options:

  • Stilling wells
  • Staff gauges
  • Wide variety of instrument accessories

H Flumes

From torrents to trickles, an H Flume can accurately measure flows that vary widely. The flumes fall into three series (H, HS, HL) as shown in the capacity table. The flume size is equivalent to the height at the inlet end. The approach channel is rectangular in cross section, with the same width and height as the flume entrance. The recommended length of the approach channel is three to five times the flume size. The flume must be installed level. The approach channel may have a slope of 2 degrees or less, and the flow must be tranquil and sub-critical. As the flow exits the flume, it must spill clear so that there is no submergence (backup in the flume)

Options:

  • Approach channels
  • Stilling wells
  • Staff gauges
  • Wide variety of instrument accessories