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2150EX Area Velocity Flow Module
Section 3 Programming
3-6
Table 3-1 Flow Conversion Methods
Conversion Type Device, Formula, or Table Size or Parameters
Area Velocity Channel Shape Area × Velocity Round Pipe, U-Channel, Rectan-
gular, Trapezoidal, Elliptical
Level-to-area
Data Points
User-developed Table 3 to 50 data points
Level to Flow Weir V-Notch Weir 22.5, 30, 45, 60, 90, 120 degrees
Rectangular Weir with end con-
tractions
Crest Length
Rectangular Weir without end
contractions
Crest Length
Thel-Mar 6, 8, 10, 12-14, 15-16 inches
Cipoletti Weir Crest Length
Flume Parshall Flume 1, 2, 3, 6, 9 inches
1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12 feet
Palmer-Bowlus Flume 4, 6, 8, 10, 12, 15, 18, 21, 24, 27,
30, 48 inches
Leopold-Lagco 4, 6, 8, 10, 12, 15, 18, 21, 24, 30
inches
“HS” Flume 0.4, 0.6, 0.8, 1.0 feet
“H” Flume 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4.5 feet
“HL” Flume 4.0 feet
Trapezoidal Flume Large 60-degree V
Extra Large 60-degree V
2-inch, 45-degree WSC
12-inch, 45-degree SRCRC
Flow Metering Insert V-notch 6, 8, 10, 12 inches
Round Orifice 6, 8, 10, 12 inches
Manning Formula Round Pipe Slope, Roughness, Diameter
U-Channel Pipe Slope, Roughness, Width
Rectangular Pipe Slope, Roughness, Width
Trapezoidal Slope, Roughness, Bottom Width,
Top Width
Equation Flow = 0.00*(Head^0.00) + 0.00*(Head^0.00)
Level-to-Flow Rate
Data Points
User-developed tables for
level-to-flow rate
3 to 50 data points