Vaisala WAC155 - Manual (Page 15)

Chapter 3 _______________________________________________________________ Installation
VAISALA _______________________________________________________________________ 13
CHAPTER 3
INSTALLATION
This chapter provides you with information that is intended to help you
install this product.
Selecting Location
Finding a suitable site for the product is important for getting
representative ambient measurements. The site should represent the
general area of interest.
Allow sufficient clearance for the wind sensors. Wind sensors should
not be located next to a building or any other object that might affect the
flow of air.
CAUTION Installations on top of high buildings or masts and in sites on open
grounds are vulnerable to lightning strikes. A nearby lightning strike
may induce a high-voltage surge not tolerable by the internal surge
suppressors of the instrument.
Additional protection is needed in regions with frequent, severe
thunderstorms, especially when long line cables (> 30m) are used.
Vaisala recommends using a surge protector such as the WSP150 in all
sites where there is an elevated risk of lightning strike.