WeatherHawk 240 Signature Wireless Weather Station - Manual (Page 5)

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An option when obstructions exist is to raise the weather station height above the obstruction by using mast
extensions or mounting the WeatherHawk on a roof.
a. If your WeatherHawk station will be inside a fence to discourage vandalism, the fence top edge
must be lower than the wind sensors even if the fence is chain-link.
b. Accurate wind measurements require your WeatherHawk to be located at the highest point in
a particular region.
c. The TP1 tripod/mast height cannot exceed 10 feet (312 cm), and you must use a guy-wire kit
if you increase the mast to the maximum height. If you need a higher mounting structure
contact WeatherHawk for recommendations.
Roof Installations
The WeatherHawk wind sensors need to be 4 - 8 feet (1.25 - 2.5 m) above the roof peak, which requires
one or two extensions (TP1-MX) and a guy-wire kit (TP1-GK) when using the TP1 tripod and two
extensions. If your roof has a chimney or is flat with a decorative trim, or has nearby trees taller than the
house, follow the “Ten Times the Height Rule” described in Figure 1.
a. Do not install your WeatherHawk near a functional chimney. When the chimney is in use,
the carbon particles in the soot may degrade and damage the bearings in the sensors. The heat
may also affect the air temperature and relative humidity measurements.
b. Do not install your WeatherHawk on a mast or tripod with a television antenna, because the
additional wind loading from the WeatherHawk may cause the antenna mast to fail and topple.
c. Because of electrical isolation and earth ground requirements, WeatherHawk recommends
that a qualified electrician install and ground a directly connected roof mounted weather station.
Your WeatherHawk Warranty is void if the weather station is not properly grounded.
Communications Considerations
Direct Communications
Cable Lengths
If your cable length needs to be longer than 100 feet, use an MD485-KT Communications Module Kit and
a user-supplied CAT 5 grade cable, or a StrikeGuard fiber optic modem kit.
Grounding Issues
Outdoor cables may be subject to induced currents due to lightning or other environmental factors.
Therefore proper grounding is imperative to avoid damage to the WeatherHawk and/or any connected Host
device or computer.
To minimize the possibility of equipment damage or personal hazard, we strongly recommend
a qualified electrician design and install the grounding and data isolation components of a
directly wired installation.