Campbell Scientific UT20 and UT30 Tower-based Weather Stations - Manual (Page 14)

UT20 and UT30 Tower-based Weather Stations
Pliers
Conduit and associated tools (as required)
Felt-tipped marking pen
Claw hammer
Pipe wrench (12 in)
Tape measure (12 to 20 ft)
3/8 in nut driver
Level (36 to 48 in)
Pliers
Climbing harness
Hard hats
50 ft haul rope
Crescent wrench
Channel-lock pliers
1/4 in washers (spacers for U-bolts)
5/64 in Allen hex wrench
3.3.3 Supplies for Power and Communications Options
AC Power
Wire, conduit, and junction boxes as needed
Phone Modem
Hayes compatible calling modem for PC
Phone line to weather station or junction box
Short-Haul Modem
4 Conductor communications cable from PC to weather station or junction box
6 ft copper ground rod and clamp for PC surge protection (optional)
4. Siting and Exposure
If any part of the weather station comes in contact with
power lines, you could be killed. Contact local utilities for
the location of buried utility lines before digging or driving
ground rods.
Selecting an appropriate site for the weather station is critical in order to obtain
accurate meteorological data. In general, the site should be representative of
the general area of interest, and away from the influence of obstructions such
as buildings and trees.
The weather station should not be located where sprinkler irrigation water will
strike sensors or instrument enclosure.
Some general guidelines for site selection are listed below, which were
condensed from EPA (1988) 1 , WMO (1983) 2 , and AASC (1985) 3 publications.
4.1 Wind Speed and Direction
Wind sensors should be located over open level terrain, and at a distance of at
least ten times (EPA) the height of any nearby building, tree or other
obstruction, as illustrated in FIGURE 4-1.
CAUTION
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