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SITRANS FX330
3.6 Minimum outlet sections
Figure 3-9: Minimum outlet sections
1 Upstream of pipe expanders, pipe bends, control valves, etc. ≥ 5 DN
2 Upstream of measuring points ≥ 5 DN
INFORMATION!
The interior of the pipe at the metering points must be free of burrs and other flow impediments.
The measuring device has an internal temperature sensor. The distance from external
temperature measuring points must be ≥ 5 DN. Use flow sensors that are as short as possible to
avoid disturbances of the flow profile.
3.7 Flow straightener
If, due to the type of installation, the required inlet sections are not available, the manufacturer
recommends using flow straighteners. Flow straighteners are installed between two flanges
upstream of the device and shorten the required inlet section.
Figure 3-10: Flow straightener
1 Straight inlet section upstream of straightener ≥ 2 DN
2 Flow straightener
3 Straight pipe run between flow straightener and device ≥ 8 DN
4 Minimum straight outlet section ≥ 5 DN
05/2019 - A5E36751269-AE
www.siemens.com/flow
INSTALLATION
3
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