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4.5 Flow measurement
The short examples on this page only give
introductory information for your flow meas-
urement. Planning information is given by the
flume manufacturers and in special literature.
Rectangular flume
- Installation of the sensor on the upstream
side
- Note distance to the overfall edge
(3 ... 4 x h
)
max
- Installation centered to the flume
- Edge opening ³ 2 x h
- Installation perpendicular to the liquid sur-
face
- Keep min. distance relating to h
- Min. distance of the edge opening of down-
stream water ³ 50 mm
90°
Overfall edge
Flow measurement on open flumes
3 ... 4 x h
90°
Upstream water
Flow measurement on open flumes
30
from ground
max
max
³ max.
distance
h
max
³ 2 x h
max
Overfall edge
max
³ 5 cm
Downstream water
Khafagi-Venturi flume
- Installation of the sensor on the inlet side
- Note distance to the Khafagi-Venturi flume
(3 ... 4 x h
)
max
- Installation perpendicular to the liquid sur-
face
- Keep min. distance relating to the height of
damming h
max
3 ... 4 x h
max
90°
h
max
Sensor
Khafagi-Venturi flume
Mounting and installation
B
VEGASON 51K ... 53K
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