7.2 - Flow Guide and Pipe Deflector Installation
62
SBT-2400 Appendix
M2041/5en
©BTG 2006
7.2.2
Flow Guide Installation
See Fig 8 for the arrangement and size of the flow guides. For pipes smaller
than 250mm, the size of the flow guides must not be less than 100mm. For
welding instructions, see
.
7.2.3
Reverse Flow Installation
When there are risk for reverse flow, it is important to protect the transmitter
with reverse flow deflectors. The deflectors can be of the same type as used
upstream of the transmitter. If a flow guide is mounted, it will also act as a de-
flector and the same type can be used downstream. For welding instructions,
30°
2 x D
D
D/3+10 mm (0.4")
Minimum 100 mm
D
45°
45°
D > 250 mm (10")
t = 4 mm
D = 100 mm - 250 mm
(4" - 10")
L > 100 mm
120°
120°
L
Fig
8 Arrangement of flow
guides.
30°
2 x D
2 x D
D/3 + 10 mm (0.4")
Minimum 100 mm
D/3 + 10 mm (0.4")
Minimum 100 mm
D
c
300 - 350 mm
300 - 350 mm
(12 - 14")
(12 - 14")
300 - 350 mm
300 - 350 mm
(12 - 14")
(12 - 14")
155 mm
155 mm
(6.1")
100 mm
100 mm
(4")
100 mm
100 mm
(4")
approx.
200 mm
200 mm
(8")
300 - 350 mm
300 - 350 mm
(12 - 14")
(12 - 14")
300 - 350 mm
300 - 350 mm
(12 - 14")
(12 - 14")
300 - 350 mm
300 - 350 mm
(12 - 14")
(12 - 14")
300 - 350 mm
300 - 350 mm
(12 - 14")
(12 - 14")
Fig
9 Reverse flow
deflectors