7. Installation
If you are programming your data logger with Short Cut, skip
and
(p. 10). Short Cut does this work for you. See
(p. 1) for a tutorial.
7.1 Siting
Mount the sensor so no shadows or reflections will be cast on it at any time of day from obstruc-
tions such as trees, buildings, or the mast or structure on which it is mounted. For the lower
sensors, 99% of the input comes from a circular area with a radius of ten times the mounting
height. For example, if the instrument is mounted 6 m above the surface, 99% of the input of the
lower sensors comes from a circular area with a 60 m radius.
To avoid shading or reflection effects and to promote spatial averaging, the SN500SS should be
mounted at least 1.5 m (5 ft) above the ground or crop surface. Campbell Scientific recommends
that the SN500SS be mounted to a separate vertical pipe at least 7.6 m (25 ft) from any other
mounting structures.
The sensor should be mounted with the cable pointing towards the nearest magnetic pole. For
example, in the Northern Hemisphere, point the cable toward the North Pole.
7.2 Mounting
The SN500SS mounting kit secures the sensor directly to a vertical pipe, or to a CM202, CM203,
CM204, or CM206 crossarm. Mount the sensor as follows:
1. Attach the mounting rod to the SN500SS (
(p. 7) and
FIGURE 7-1. Back of SN500SS shows the mounting rod port (left) and cable connector
SN500SS Net Radiometer
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