Relative Humidity And Temperature Sensor - RainWise PVmet 500 Series User Manual

RELATIVE HUMIDITY AND TEMPERATURE SENSOR

The relative humidity and ambient air temperature (RHT) are measured with a digital integrated circuit. The RHT sensor is protected
within white slopped plastic solar reflecting shields.
Figure 2: RHT sensor solar shield housing
The RHT sensor is susceptible to radiated heat, so it must be located away from heat producing equipment and must be kept away
from surfaces that can radiate heat after being exposed to sunlight for extended periods of time. The recommended distance to a
large surface (i.e. the ground, cement mounting pad or rooftop) is 1.25m to 2m as shown in Figure 3.
Figure 3: Recommended height for proper ambient temperature readings
If the surface below the RHT sensor is black or a dark color such as asphalt or black roofing material raising the sensor higher is
recommended. Adequate air flow improves sensor performance so mounting in free space away from walls is also recommended.
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