Bürkert 8012 Series, Руководство по эксплуатации, Страница: 27 / 136

27
Installationandwiring
Type 8012
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Install the device on the pipe in such a way that the upstream
and downstream distances are respected according to the
design of the pipes, as per Fig. 4 and the EN ISO 5167-1
standard.
With regulating valve Pipe with 2 elbows at 90°
in 3 dimensions
Pipe with 2 elbows
at 90°
Pipe with 1 elbow at 90°
or 1 T-piece
With pipe expansion With pipe reduction
50 x DN
5 x DN
40 x DN
5 x DN
25 x DN 5 x DN
20 x DN 5 x DN
18 x DN 5 x DN
15 x DN 5 x DN
Fig. 4 : Upstream and downstream distances depending on the
design of the pipes.
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If necessary, use a flow conditioner to improve measurement
precision.
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Install the device in such a way that the paddle-wheel axis is
horizontal (Fig. 5).
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Prevent the formation of air bubbles in the pipe in the section
around the device (Fig. 6).
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Ensure that the pipe is always filled in the section around the
device (Fig. 7).
Correct
Incorrect
Fig. 5 : The paddle-wheel axis must be horizontal
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