Electronics Black Wrist Watch
Electronics Black Wrist Watch

V-NOTCH – Triangular Weir

Category: Geotechnical & Civil Engineering Instrumentats

AVAILABLE IN 22.5, 45, 60, AND 90 DEGREES
FLOWS FROM 5 TO 187 LITERS PER SECOND
SIMPLE PRINCIPLE

Triangular weirs are sharp crested thin plates with V – shape opening (or notch). These plates are designed to measure seepage water flows in channels or tanks.

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Triangular weirs are sharp crested thin plates with V-shaped opening (or notch). These plates are installed at the exit of a channel, tank, or basin in order to measure the real-time flow of water. For a given weir profile size and shape, the flow of water is related to the head of water at the weir.

 

Measurement can be carried out manually directly on the plate or on a staff gauge fixed to the basin wall, or remotely via a water level sensor installed in the basin at a minimum distance of the V-notch. Acoustic or vibrating wire NIVOLIC WL sensors can be used – see separate brochure for more information.

 

A typical application for these plates consists in measuring the flow of water on the downstream side of a dam. The seepage water flow will be diverted to an open channel in a weir-station. Seepage measurement is one of the most important indicator of  the overall performance of earth / rock – fill and concrete dams.

 

Specifications

 

  Code   Flow (l/sec)   A (mm)   B (mm)   C(mm)   Angle α
  FR-1106050100   12   154   226   596   90o
  FR-1106050100A   68   305   376   897   90o
  FR-1106050100B   187   455   528   1199   90o
  FR-1106050200   6.9   155   230   414   60o
  FR-1106050200A   39   305   580   587   60o
  FR-1106050200B   108   455   530   760   60o
  FR-1106050300   5   155   230   348   45o
  FR-1106050300A   28   305   380   473   45o
  FR-1106050300B   78   455   530   597   45o
  FR-1106050400   2.4   155   230   269   22.5o
  FR-1106050400A   14   305   380   328   22.5o
  FR-1106050400B   37   455   530   388   22.5o

 

 

  Material   Stainless Steel 304
  Thickness   3.2 mm

 

Ordering Info

 

Please specify:

  •     Model (capacity)
  •     Optional water level sensor with readout equipment
  •     Customized plate fitting basin dimensions and onto which the v-notch plate will be screwed