FLOWSIC100 Operating Instructions
Gas Velocity Monitor
Assembly and Installation
78
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SICK MAIHAK GmbH · Germany · All rights reserved
88012513/03-2008
3.3.3 Installing and Connecting the Sender/Receiver Units
Check the following before installation:
‡ The sender/receiver units must have at least the same nominal length as the flanges
with pipe.
‡ The inside of the flange pipes must be free of welding beads.
‡ The inside of the probe pipes on the sender/receiver units must not come into contact
with the flange pipes.
‡ The cable connection on the electronics unit for sender/receiver units with digital signal
transmission must be at the bottom.
Note: If this does not comply with the installation requirements of the type FLSE100-PR as
shown in Fig. 3.4, loosen the screwed connections between the electronics unit and PR
/ PRAC connection, rotate the unit accordingly (90
°, 180°, 270°), and screw the
components together again.
Purge-air Supply for Internally Cooled Sender/Receiver Units FLSE100-MAC/HAC
‡ The purge-air unit must be in operation.
‡ Connect the purge-air hose DN25 to the purge-air connection on the sender/receiver
unit (mount the hose clamp on the free hose end, connect the purge-air hose and secure
it with the hose clamp).
‡ Make sure, that the purge-air flows in and out from below (see Fig. 3.22).
‡ If this is not guaranteed, loosen the screwed connections between the purge-air connec-
tion and the duct probe, rotate the unit accordingly (90
°, 180°, 270°), and screw the
components together again
‡ If the optional purge-air supply in the connection box is used, slide the lose end of the
purge-air hose on adapter 40-25 and secure it with the hose clamp.
Purge-air Supply for Internally Cooled Sender/Receiver Unit FLSE100-PRAC
‡ The sender/receiver unit must be installed so that cable connection and air intake of the
pump are oriented downwards.
‡ It has to be ensured that only contamination-free and dry air is taken in (use weather-
proof covers if necessary).
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