Vaisala WXT510 - Manual (Page 34)

User’s Guide ______________________________________________________________________
32 __________________________________________________________________ M210470EN-D
0505-200 Figure 11 Mounting Screw Location in Cross Arm
Aligning WXT510
To help the alignment, there is an arrow and the text "North" on the
bottom of the transmitter. WXT510 should be aligned in such a way that
this arrow points to the north.
Wind direction can be referred either to true north, which uses the
earth’s geographic meridians, or to the magnetic north, which is read
with a magnetic compass. The magnetic declination is the difference in
degrees between the true north and magnetic north. The source for the
magnetic declination should be current as the declination changes over
time.