SICK DUSTHUNTER T - Page 259

Operating Instructions FLOWSIC100
Gas Velocity Monitor
Assembly and Installation
88012513/03-2008 © SICK MAIHAK GmbH · Germany · All rights reserved 67
The following must be carried out before the flanges with pipe are mounted:
‡ Cut out suitable oval openings (apertures) in the duct wall (see Appendix for templates).
‡ Bevel the flange pipes at an angle of 45
° or 60°.
‡ If necessary, adapt the flange pipes to the wall curvature as shown in Fig. 3.12.
Fig. 3.12: Adapting the flanges with pipe
The length of the flange pipe L
F
(L
F45
, L
F60
) depends on the mounting angle α, wall thickness
w, and nominal length NL (see Fig. 3.11 and Fig. 3.12). This correlation is expressed by the
following formulas:
α b
45° 10
60° 8
Di (mm) a (mm)
500 ... 290 0
290 ... 150 3
L
F
45°
60°
(87°) (87°)
48.3
a
L
F
60
L
F4
5
L
F
NL x+=
L
F45
L
F
48.3–=
L
F60
L
F
27.9–=
x
48.3 35+
2 αtan
⋅
-----------------------------
wb+()
αsin
---------------------
–=