Apogee S2-441 Manuale d'uso - Pagina 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 for this purpose. To facilitate mounting on a cross arm, an Apogee Instruments model AM-110

mounting bracket is recommended.

Nylon Screw: 10-32 x 3/8

Model: AL-120

Model: AL-110

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 0.5 %, 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.