Vaisala WAC155 - Manual (Page 17)

Chapter 3 _______________________________________________________________ Installation
VAISALA _______________________________________________________________________ 15
0204-041 Figure 3 Recommended Mast Length on Top of a Building
The recommended minimum length (marked with the letter h in Figure
3 on page 15 ) for the mast that is installed on top of a building is
1.5 times the height of the building (H). When the diagonal (W) is less
than the height (H), the minimum length of the mast is 1.5 W.
Installation Procedure
For installation, follow the procedure below and refer to corresponding
sections for details.
1. Remove the four screws holding the cover of the WAC155
transmitter. Remove the cover.
2. Select the RS-485 termination according to the instructions in
section
Jumper Settings on page 16 .
3. Enter the power and signal cables through the cable glands(s).
For better protection against RF interference, ground the cable
shield as shown in
Figure 6 on page 17 .
4. Connect the wires to the X2 removable screw terminal block
according to
Figure 8 on page 20 and Figure 9 on page 21 .
Tighten the output cable gland(s).
5. Carefully reattach the enclosure cover with the four screws.