Operating Instructions FLOWSIC100
Gas Velocity Monitor
Assembly and Installation
88012513/03-2008 © SICK MAIHAK GmbH · Germany · All rights reserved 69
3.2.2 Mounting the Control Unit
The control unit must be mounted on a level base at an accessible, protected location (see
Fig. 3.13 for dimensions). The following must be taken into account:
• The ambient temperature range specified in the technical data must be observed; note
any radiant heat (and provide a shield if necessary).
• Protect the unit from direct sunlight.
• The mounting location should be free of vibration; provide stabilization measures if nec-
essary.
• Provide sufficient clearance for the cables and for opening the front panel.
Provided that suitable cables are used (see Section 3.3.3), the MCU-N control unit can be
mounted at a distance of up to 1000 m from the sender/receiver units (use bus wiring as
shown in Fig. 3.24; the length is the total length of all the cables). For easier handling of the
MCU, we recommend to install it in a control room. This facilitates communication with the
FLOWSIC100 for configuration or troubleshooting.
If the device is to be mounted outdoors, the optional weatherproof cover for the control unit
or equivalent cover (corrugated roof) must be provided.
Mounting dimensions
Fig. 3.13: Mounting dimensions of the MCU
c
f
e
> 250
d
b
M8
Clearance for opening the dooc
Clearance for cable
a
Size Type connection unit
MCU-N MCU-P
a 160 260
b 320 420
c 210 300
d 340 440
e 125 220
f > 350 > 540
MCU-N: Control unit without
purge-air supply
MCU-P: Control unit purge-air sup-
ply (see Section 2.7.3)
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