Siemens SITRANS LUT400 - Cut Throat Flume

General Operation
7.11 Open Channel Monitoring (OCM)
SITRANS LUT400
128 Operating Instructions, 07/2019, A5E33329501-AC
Application information
● Designed to be installed directly into pipelines and manholes
● Leopold Lagco may be classed as a rectangular Palmer-Bowlus flume
● Sized by pipe (sewer) diameter
● For rated flows under free flow conditions, the head is measured at a point upstream
referenced to the beginning of the converging section. Refer to the following table:
Flume Size
(pipe diameter in inches)
Point of Measurement
cm
inches
4-12
2.5
1
15
3.2
1.25
18 4.4 1.75
21
5.1
2
24 6.4 2.5
30
7.6
3
42
8.9
3.5
48
10.2
4
54
11.4
4.5
60
12.7
5
66
14.0
5.5
72
15.2
6
7.11.4.5 Cut Throat Flume
Plan View
Application Information
● Similar to Parshall flume except that the floor is flat bottomed and throat has no virtual
length.
● Refer to manufacturer’s specifications for flow equation and point of head measurement.