ABB SwirlMaster FSS450 - Installation at High Measuring Medium Temperatures

SwirlMaster FSS430, FSS450 VortexMaster FSV430, FSV450 | CI/FSS/FSV430/450-EN Rev. D 17
Fig. 7: Pipe sections with pipe elbows
Installation Inlet section Outlet section
A
Single pipe elbow min. 20 x DN min. 5 x DN
B S-shaped pipe
elbow
min. 25 x DN min. 5 x DN
C Three-dimensional
pipe elbow
min. 40 x DN min. 5 x DN
Swirl flowmeters FSS430, FSS450
On account of its operating principle, the swirl flowmeter
functions virtually without inlet and outlet sections.
The figures below show the recommended inlet and outlet
sections for various installations.
Fig. 8: Straight pipe sections
Installation Inlet section Outlet section
A
Straight pipe section min. 3 x DN min. 1 x DN
B Valve upstream of
the meter tube
min. 5 x DN min. 1 x DN
C
Pipe reduction min. 3 x DN min. 1 x DN
D
Pipe extension min. 3 x DN min. 3 x DN
Additional inlet and outlet sections are not required
downstream of reductions with flange transition pieces in
accordance with DIN 28545 (α/2 = 8°).
Fig. 9: Pipe sections with pipe elbows
Installation Inlet section Outlet section
Single pipe elbow
upstream or
downstream of the
meter tube
min. 3 x DN min. 1 x DN
If the elbow radius of single or double pipe elbows positioned
upstream or downstream of the device is greater than
1.8 x DN, inlet and outlet sections are not required.
5.1.3 Installation at high measuring medium
temperatures
Fig. 10: Installation at high measuring medium temperatures
At high measuring medium temperatures > 150 °C (> 302 °F),
the sensor must be installed so that the transmitter is pointing
to the side or downward.
G11752
≥ 20 x DN ≥ 5 x DN
A
B
≥ 25 x DN ≥ 5 x DN
C
≥ 40 x DN ≥ 5 x DN
G11753
≥3 x DN ≥3 x DN
AB
C
D
≥3 x DN ≥ 1 x DN ≥5 x DN ≥1 x DN
≥3 x DN ≥1 x DN
G11752
≥3 x DN
≥1 x DN
≥1,8 x DN
G11755