Gill Instruments Ltd
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WindObserver II (WindObserver FC)
Page 24
Issue 2
Doc. No. 1390-PS-0011
June 2007
8.13. 45
°°°°
Offset
Setting
Configuration
code
Notes
Align U axis with
transducer axis
X1
X1. Aligns U axis with North/South axis.
Align U axis +45
°
to transducer axis
X2
X2. This re-aligns both U&V and polarity 45
˚
.
Reverses Polar
Direction
X3
X3 reverses reported polar direction to allow the
instrument to be mounted upside down. N.B.
Does NOT affect UV alignment (Mode 1, 3).
Align @ 45° from
North
X4
X4 set UV & polar alignment at 45 degrees from
North when instrument is mounted upside down.
Figure 3 shows the polarity of U and V if the wind components along the U and V axis are
blowing in the direction of the respective arrows.
-U
+U
+V
-V
E
N
S
W
Figure 3 UV Polarity
