Campbell UT30, Руководство по установке

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2-1
SECTION 2. UT30 TOWER INSTALLATION
2.1 UT30 TOWER INSTALLATION
The UT30 10 meter tower provides a support
structure for mounting the weather station
components. Figure 2.1-1 shows a typical
UT30 equipped with instrumentation enclosure,
meteorological sensors, and solar panel.
2.1.1 TOWER INSTALLATION SAFETY
CONCERNS
WARNING: Tower installation near power
lines is dangerous. The minimum safe
recommended distance from overhead
power lines is 2 times the height of the
tower and mast combined.
When installing the tower, remember:
•
DO NOT use a metal ladder
•
DO NOT work on a wet or windy day
•
DO dress properly
−
shoes with rubber soles
and heels, rubber gloves, and long sleeves.
2.1.2 BASE AND GUY ANCHOR LAYOUT
1. A guyed UT30 tower requires an area
approximately 17 feet in diameter. Brush and
tall weeds should be removed, otherwise the
natural vegetation and ground surface should
be disturbed as little as possible.
2. Drive a stake where the base of the tower
will be located. Attach a line to the stake
and scribe a circle with a 17 foot radius.
Drive a stake on the scribed line opposite
the direction the tower will hinge for the first
guy anchor location (Figure 2.1-2).
On level ground, lay out the remaining two
anchor locations by measuring 29.5 feet
from the first anchor to the scribed line on
either side of the base stake (Figure 2.1-2).
On unlevel ground, use a compass at the
base stake to lay out the remaining two
anchor locations 120 degrees from the first.
Vary the distance between the tower and
each anchor so that the angle between the
tower and the guy wire will be approximately
30 degrees.
2.1.3 TOWER BASE INSTALLATION
There are two base options: the B18 base is
poured in concrete; the RFM18 roof mount base
is anchored to a flat surface.
2.1.3.1 B18 Base installation
1. Dig a hole 36" square and 48" deep where
the tower base will be located (Figure 2.1-3).
2. Optional

construct a concrete form out of
2" x 4" lumber 36" square (inside
dimensions). Center the form over the hole
and drive two stakes along the outside edge
of each side. Level the form by driving nails
through the stakes and into the form while
holding the form level.
3. Attach the bottom section of the tower to
the B18 base using one bolt per leg, making
sure that the hinge direction is common for
all legs.
4. Center the bottom tower section with the
base attached in the hole. Orient the
tower/base for the proper hinge direction.
Make sure that the top of the legs will be at
least 1/2" above the finished height of the
concrete (Figure 2.1-4).
5. Fill the hole with concrete. Getting the
bottom tower section plumb is very
important. As concrete is poured into the
hole, periodically check the tower for plumb
using a carpenter's level and make
adjustments as necessary. Allow three to
four days for the concrete to cure.
REGCOMENDED
Feed SENSORS Portland Or USA Serial 27115
REGCOMENDED Feed SENSORS
Portland Or US A Serial 27115 REGCOMENDED Feed SENSORS
Portland Or US A Serial 27115 27115
FIGURE 2.1-1. UT30 Tower-Based
Weather Station