Endress+Hauser Prosonic S FMU90 - British Standard Venturi Flumes (BS 3680)

Appendix
186
13.1.3 British standard Venturi flumes (BS 3680)
L00-FMU90xxx-05-00-00-xx-005
BD: blocking distance of the sensor
The bottom of the flume may not have any slope throughout the length x. (no measuring flume with data threshold)
!
Note!
After selecting the type of flume, Q
max
can be adjusted to the flow conditions. Q
max
defines the flow
at which the output current is 20 mA.
2 H
max
≥ 3 H
max
≥ 3 (B-b)
b
B
L
BD
x
H
max
Type of flume b H
max
[mm] Q
max
[m
3
/h]
BST Venturi 4" 4" 150 36,25
BST Venturi 7" 7" 190 90,44
BST Venturi 12" 12" 340 371,1
BST Venturi 18" 18" 480 925,7
BST Venturi 30" 30" 840 3603