Chapter 4 • Installation
19
4.1.7
Installing the Wind Direction Sensor
The sensor is a two-wire sensor using the red wire for power and the
black wire for the output signal.
WARNING:
Do Not Connect When Energized
Do not connect the sensor wire if the communications module is energized.
The ridge on the fixed portion of the sensor represents the 0° direction
of the sensor. Rotate the sensor so the ridge is aligns with the 0°
direction from a compass. The sensor comes with a stainless steel
elbow that can be mounted on a 1” outside diameter tube. For best
results ensure that the sensor is mounted parallel to the ground surface
located over open level terrain. National Semiconductor recommends
the wind direction sensor be installed near the wind speed sensor.
4.1.8
Installing the Ambient Temperature Sensor
The sensor is a two-wire sensor using the red wire for power and the
black wire for the output signal.
WARNING:
Do Not Connect When Energized
Do not connect the sensor wire if the communications module is energized.
CAUTION:
Do not install the temperature sensor in direct sunlight.
For ambient temperature measurement applications the sensor should
be housed in a ventilated irradiation shield. To accurately measure the
ambient temperature we recommend that the sensor be no closer than
four times an obstruction’s height, at least 100ft. from large paved
areas, and located in an open level area that’s at least 30ft in diameter.
The open areas should be covered by short grass or, where grass does
not grow, the natural earth.
Avoid placing the sensor over rooftops, heat sources, high vegetation,
in shaded areas and areas that hold water.
4.1.9
Installing the PV Cell Temperature Sensor
The sensor is a two-wire sensor using the red wire for power and the
black wire for the output signal.
WARNING:
Do Not Connect When Energized
Do not connect the sensor wire if the communications module is energized.
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Summary of Contents for SolarMagic
Page 1: ...SolarMagicTM Weather Station User Guide...
Page 4: ......
Page 32: ......
Page 33: ...Appendix A Reference Diagrams 27 Appendix A Reference Diagrams...
Page 34: ...National Semiconductor SolarMagic Weather Station User Guide 28 A 1 1 Sensor Terminal Blocks...
Page 35: ...Appendix A Reference Diagrams 29 A 1 2 Communications Power Terminal Block...