KROHNE TIDALFLUX 2300 F EN - Manual (Page 39)

TECHNICAL DATA
6
39
TIDALFLUX 2300 F
www.krohne.com 06/2013 - 4002490202 MA TIDALFLUX 2300 F R02 en
EXAMPLE:
Consider a maximum flow to be measured of 1200 m
3
/h. The material of the pipeline is steel and
the slope 1.0%.
From the table a maximum flow has to be selected that is bigger than the flow to be measured.
Selection: DN500, Q
max
= 1767 m 3 /h and v
max
= 2.5 m/s.
To determine the level in the pipe at 1200 m
3
/h, calculated the ratio Q / Q
max
= 1200 / 1767 = 0.68.
See above figure and read out the ratio's of H/DN and v/v
max
:
1 H/DN = 0.6 or 0.6 x 500 mm = 300 mm,
2 At H/DN = 0.6, find v/v
max
= 1.05, so v = 1.05 x 2.5 = 2.63 m/s.
Figure 6-2: Relative flow and velocity versus relative filling level
1 Flow Q
2 Velocity v
INFORMATION!
v
max
and Q
max
are the values of v and Q if the pipe is completely filled
INFORMATION!
A sizing tool for various slopes is available at the website of the manufacturer.