FIGURE 8-4. Incorrect installation: sensor is slightly offset from the triangle
Table 8-2 (p. 29) shows solar radiation data from a ClimaVUE 50 with a properly installed bird
spike kit and another ClimaVUE 50 with an improperly installed bird spike kit. The measurements
were made when there was no snow cover. The errors were less than 5% decrease in summed
daily solar radiation.
Table 8-2: Percent error of summed daily solar radiation by date
Sky condition, date
Percent error of summed daily solar radiation
ClimaVUE 50 with
properly installed
bird spike kit
ClimaVUE 50 with
improperly installed
bird spike kit
Partly cloudy, 3/14/2019 1.8% 4.7%
Partly cloudy, 3/15/2019 2.4% 2.1%
Partly cloudy, 3/16/2019 2.0% 4.2%
Mostly sunny, 3/17/2019 2.4% 3.7%
Sunny, 3/18/2019 2.1% 4.2%
Sunny, 3/19/2019 2.3% 4.1%
Sunny, 3/20/2019 2.3% 4.1%
Mostly sunny, 3/21/2019 1.9% 4.5%
NOTE:
The ClimaVUE 50 with a properly installed bird spike kit was about 1% higher than the control
when compared to the baseline data with no bird spike; the other ClimaVUE 50 was about –1%
ClimaVUE 50 Compact Digital Weather Sensor 29
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