Daktronics AF-3020-7.6-R,A - Manual (Page 31)

Appendix A: Optional Temperature Sensor
Appendix A: Optional Temperature Sensor A-1
The optional temperature sensor is mounted
separately and requires a location away from
the influence of chimneys, air conditioners,
vents, tar roofs, concrete and parking lots
which can cause abnormal temperature
fluctuations. Usually a separation of at least
20 to 30 feet horizontally and eight feet
vertically is required to achieve this.
Locations where air movement is restricted
are also unsatisfactory.
A first-choice temperature sensor location is a
north eave or northern exposure away from
direct sun light and above grass. This location
gives extra stability and accuracy to the
sensor because of the added shading usually
obtained on a northern exposure. There
should be at least one foot between the
bottom of the eave and the top of the temperature sensor housing for accurate readings, as seen in
Figure 19.
Due to the nature of the signal cable used to send the temperature information, the maximum distance
between the temperature sensor and the display is 1,000 feet (304.8 meters).
Figure 19: Temperature Sensor Eave/Wall Mount
The second choice for locating a temperature sensor is on the display itself, or somewhere on the
display structure. A light-colored display is preferred in this application. Location of the sensor
should be above, below, or on a northern edge to try to keep the sensor shaded. If mounting above the
display, a minimum height above of six feet is required. If mounting below the display, a minimum of
eight feet above ground and a minimum of one foot between sensor and display are required, as seen
Figure 20 Greater accuracy is obtained if there is grass below the display rather than concrete or
some other material.
Refer to Figure 20 for wiring instructions.
Figure 20: Temperature Sensor Mounting to Bottom of
Display