Section 1. Site Preparation and Tower Assembly
1-3
1.2 Description
The tower sections are made from 32 mm (1¼") OD aluminium tube. The mast is
made from the same material but is reduced to 25 mm (1") OD for the top 450 mm
to accommodate the 405-1, 016E, 017E or 018E crossarm. Two bolts are used to
secure the mast to the collar in the top section of the tower.
The towers are designed for use with special base assemblies, which are embedded
in concrete (see Figure 1-3). Roof-mount base assemblies, for mounting onto
suitably constructed roof areas or other flat surfaces (see Figure 1-4), are available
to special order. Please contact Campbell Scientific for further advice.
1.2.1 Guying
Standard towers are not supplied with guy ropes. If your particular site is subject
to consistently high wind speeds or turbulence, a guy rope assembly kit can be
supplied to minimise vibration effects on the tower and instrumentation.
Section 2 of this manual gives full instructions for guying the tower where
required.
Do not attempt to climb the structure (whether guyed or
not) either to do initial installation or to carry out routine
maintenance
of components. All installation and
maintenance must be done with the tower at ground level
as detailed in Section 2 of this manual.
1.3 Tower Specifications
Tower Model:
UT20
UT30
Total Height (approx.) including mast
7 m
10 m
Weight (approx.): Tower Sections and Mast
Standard Base
Roof Mounting Base
20 kg
9 kg
9 kg
27 kg
11.3 kg
11.3 kg
Shipping Weight (approx.)
29 kg
39 kg
Tower Shipping Dimensions (without guying kit)
Base assembly
360x360x3048 mm
360x360x1320 mm
(packed separately)
457x457x3048 mm
(legs packed with
tower assembly)
Max. wind gust survival for a bare unguyed tower
with standard base
45 ms
-1
(100 mph)
45 ms
-1
(100 mph)
1.3.1 Accessories
The following accessories are available from Campbell Scientific:
Model Number
Description
URS1
12-plate radiation shield
405-1
Vector cross-arm
016E
Pyranometer mounting arm
017E
Wind Monitor mounting arm
018E
Combined Wind Monitor/pyranometer mounting arm
009546
Guy Rope assembly
WARNING
