4. Inspect the Teflon screen (FIGURE 9-4 (p. 33)) and replace if dirty.
FIGURE 9-4. Teflon screen
5. Rain gage maintenance. Routine maintenance is essential for accurate rainfall
measurements. Debris blocking the inlet (funnel, spring, downspout, and flared hole) can
result in under reporting of rainfall. Debris blocking the downspout screen can result in
over reporting of rainfall. The funnel locks in place using two pegs on the side of the
funnel. To access the inside of the rain gage:
a. Press the funnel down against the spring and turn counter clockwise.
b. If necessary, unplug the pyranometer and remove funnel.
CAUTION:
The pyranometer must be unplugged before fully removing the funnel.
c. Check the downspout for debris (FIGURE 9-5 (p. 34)). Use a pipe cleaner or small soft
brush to clean the downspout.
d. If needed, clean the spring after twisting it loose. Ensure that the gold electrodes are
free of debris and contamination.
e. Reattach the pyranometer connector.
ClimaVUE 50 Compact Digital Weather Sensor 33
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