Dwyer UTS - Manual (Page 16)

Trapezoidal (Cipolletti) Sharp-Crested Weir (Type 3)
Khafagi-Venturi Flume (Type 5)
Parshall Flume (Type 6)
Palmer Bowlus Flume Trapezoidal Throat Cross-Selection (Type 7)
Page 15
Code (YY)
01
02
03
04
05
06
07
08
09
10
V-Notch Angle (°)
90
60
53.8
45
30
28.4
22.5
90
45
22.5
Figure 14: V-Notch (Triangular) Sharp-Crested Weir
British Standard
Code (YY)
01
02
03
04
05
06
07
08
09
Flume Type
QV 302
QV 303
QV 304
QV 305
QV 306
QV 308
QV 310
QV 313
QV 316
Figure 15: Khafagi-Venturi Flume
b0 (cm)
12
30
40
50
60
80
100
130
160
Code (YY)
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
Throat Width (in)
1
2
3
6
9
12
18
24
36
48
60
72
96
120
144
Figure 16: Parshall Flume
Code (YY)
01
02
03
04
05
06
07
08
09
10
Conduit Diameter (in) D
6
8
10
12
15
18
21
24
27
30
Figure 17: Palmer Bowlus Flume Trapezoidal Throat Cross-Selection