If You Are Going To Install The Solar Radiation Sensor; Maintaining The Sensor - DAVIS Solar Radiation Sensor Install Manual

5. Cut off the ends of the cable ties.
6. Put the rain collector cone back on the base, turning it clockwise until the latches
hold it in place. Be sure that it does not squeeze the sensor cable where it goes down
into the notch and up inside the cone.
Don't put the cone back on if you're going to install the UV sensor at this
time.
7. Clean the sensor as instructed in "Maintaining the Sensor" on page 15.
If You Are Going to Install the UV Sensor
If you're installing the UV sensor also, use the same testing and installation
procedure just completed for the solar radiation sensor. In the rain collector
base, the cable clamps have room to secure one loop of the UV sensor cable and
one loop of the solar radiation sensor cable.
Reassembling Radiation Shield
Consult the illustration on page 12.
1. Slide the two open plates over the threaded studs.
2. Slide the single closed plate over the threaded studs.
3. Place a flat washer, lock washer and wing nut over one of the studs.
Tip: temporarily place a wing nut on one of the studs to hold the plates as
you place washers and a wing nut on another stud.
4. Finger-tighten the wing nut.
5. Repeat #3. and #4. until all three wing nuts are secure.
M
AINTAINING THE
For the most accurate readings, clean the diffuser after mounting, and then
periodically. Use ethyl alcohol (NOT rubbing alcohol) or water with a little
detergent in it.
Due to the sensitivity of solar radiation sensors it is common practice for man-
ufacturers to recommend re-calibration after a period of time. Here at Davis
Instruments we have seen approximately 2% drift per year on the readings
from these sensors. For applications demanding higher accuracy, the sensors
should be calibrated once every year.
Contact Technical Support (510) 732-7814 about returning your sensor for cali-
bration.

Maintaining the Sensor

S
ENSOR
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