Dwyer ULL - Manual (Page 15)

Parshall Flume (Type 5)
Palmer Bowlus Flume Trapezoidal Throat Cross-Selection (Type 6)
H Flume (Type 7)
Leopold-Lagco Flume (Type 8)
Page 14
Code (YY)
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
Throat Width (in)
1
2
3
6
9
12
18
24
30
36
48
60
72
96
120
144
Figure 25: Parshall Flume
Code (YY)
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
Conduit Diameter (in) D
4
6
8
10
12
15
18
21
24
27
30
36
42
48
60
72
Figure 26: Palmer Bowlus Flume Trapezoidal Throat Cross-Selection
Code (YY)
01
02
03
04
05
06
07
08
Flume Size (in)
6
9
12
18
24
30
36
54
Figure 27: H Flume
Measurement Point (in)
1.96
2.75
3.54
5.51
7.08
9.05
11.02
16.14
Code (YY)
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
Crest Length (in)
4
6
8
10
12
15
18
21
24
30
36
42
48
54
60
66
72
Figure 28: Leopold-Lagco Flume