FLOWSIC100 Operating Instructions
Gas Velocity Monitor
Assembly and Installation
58
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SICK MAIHAK GmbH · Germany · All rights reserved
88012513/03-2008
3.1.2 Further Planning Instructions
Installing the FLSE100 in horizontal ducts
In horizontal ducts and pipelines, the sender/receiver units should be installed horizontally
and slightly inclined to prevent condensate from entering the duct (see Fig. 3.3).
Fig. 3.3: Installing the sender/receiver units in horizontal pipelines
Installing the FLSE100-PR and PRAC sender/receiver unit
Fig. 3.4: Installing the sender/receiver unit type FLSE100-PR
Sender/receiver units with special length can be delivered if the condition for x cannot be
observed.
1 ... 2°
Duct
Sender/receiver unit
Horizontal duct Vertical duct
Di
45°
a
45°
1 ... 2°
b
x
x
Middle of the distance
transducer -- transducer
x = Representative wall distance, where the local gas velocity correspond to the mean velocity
in the duct cross-section
Di = 0.35 ... 0.8 m:
a = b
Di > 0.8 m:
x ≥ 0.242 • Di /2
(accord. to ISO DIS 7145)
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