3 INSTALLATION
36
SITRANS FX330
www.siemens.com/flow 08/2022 - A5E36751269-AG EN
3.8.2 Installing devices in sandwich design
• Push the first bolt ③ through the hole ④ of both flanges.
• Screw on the nuts and washers to both ends of the bolt ③ but do not tighten them.
• Install the second bolt through the holes ④ .
• Place the flow sensor ① between the two flanges.
• Insert the gaskets ⑤ between flow sensor ① and flanges and align them.
• Check that the flange is concentric.
• Install the remaining bolts, washers and nuts. Do not yet tighten the nuts.
• Turn the centring ring ② in a counter-clockwise direction and align the device.
• Check that the gaskets ⑤ are concentric; they must not protrude into the pipe cross-section.
• Now tighten all nuts bit by bit alternately across the diagonal.
Figure 3-14: Installation using centering ring
1 Flow sensor
2
Centering ring
3
Bolts with fixing nuts
4 Drill hole
5
Sealing
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