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V-NOTCH – Triangular Weir

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.

 

Description

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
CodeFlow (l/sec)A (mm)B (mm)C (mm)Angle α
FR-11060501001215422659690o
FR-1106050100A6830537689790o
FR-1106050100B187455528119990o
FR-11060502006.915523041460o
FR-1106050200A3930558058760o
FR-1106050200B10845553076060o
FR-1106050300515523034845o
FR-1106050300A2830538047345o
FR-1106050300B7845553059745o
FR-11060504002.415523026922.5o
FR-1106050400A1430538032822.5o
FR-1106050400B3745553038822.5o
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

 

 

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