Apogee Instruments SP-110 Manual do Proprietário - Página 9
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DEPLOYMENT AND INSTALLATION
Mount the sensor to a solid surface with the nylon mounting screw provided. To accurately measure PPFD incident
on a horizontal surface, the sensor must be level. An Apogee Instruments model AL-100 Leveling Plate is
recommended to level the sensor when used on a flat surface or being mounted to surfaces such as wood. To
facilitate mounting on a mast or pipe, the Apogee Instruments model AL-120 Solar Mounting Bracket with Leveling
Plate is recommended.
Pyranometer model SP-230 comes with a plastic standoff which should be placed between the sensor head and
the leveling plate. The standoff allows for more efficient use of the internal heaters by minimizing possible heating
losses through conduction.
To minimize azimuth error, the sensor should be mounted with the cable pointing toward true north in the
northern hemisphere or true south in the southern hemisphere. Azimuth error is typically less than 1 %, but it is
easy to minimize by proper cable orientation.
In addition to orienting the cable to point toward the nearest pole, the sensor should also be mounted such that
obstructions (e.g., weather station tripod/tower or other instrumentation) do not shade the sensor. Once
mounted, the green cap should be removed from the sensor. The green cap can be used as a protective covering
for the sensor when it is not in use.
Nylon Screw: 10-32x3/8
Model AL-100
Important: Only use the nylon screw provided when mounting to
insulate the non-anodized threads of the aluminum sensor head
from the base to help prevent galvanic corrosion. For extended
submersion applications, more insulation may be necessary.
Contact Apogee tech support for details.
Nylon Screw: 10-32x3/8
Model AL-120