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Davis sensors are designed to provide many years of service in the field. Maintenance will assure that they
continue to perform at their highest accuracy.
ANEMOMETER: WIND CUPS
Issue:
Spiders and other insects can interfere with the
rotation of the cups.
Solution:
If wind speed seems low, use an Allen wrench to
loosen the setscrew on the side of the wind cups. Remove
the wind cups, and clean the exposed portion of the shaft
with a damp cloth or cotton swab. Clean the wind cups with
water and a mild liquid detergent. Rinse thoroughly before
replacing.
After replacing the wind cups and tightening the setscrew,
check to make sure that the wind cups spin freely. If they do
not, the bearings may be worn and need factory repair.
Caution:
Do not use or add grease, oil, or a spray lubricant of
any kind.
ANEMOMETER: WIND VANE
Issue:
Anemometer arm may have rotated out of proper
orientation.
Solution:
Check the orientation of the anemometer
annually. The console is factory-calibrated to report accurate
wind direction when the anemometer arm is pointed due
north. (See your User Manual for details on how to calibrate
your console’s wind direction if the arm cannot be mounted
pointing north.)
INTEGRATED SENSOR SUITE (ISS)
Issue:
Console shows the message: “LOW TX BATTERY”
(wireless stations only).
Solution:
Replace the 3-volt lithium battery inside the
transmitter shelter.
Note:
The message “LOW CONSOLE BATTERIES” indicates that
the C-cell batteries in the console need to be replaced.
Issue:
Solar panels look hazy.
Solution:
Sunlight can make the solar panels look hazy or
cloudy. However, this haziness will
not
affect performance
and needs no maintenance. You should just keep the solar
panels clear of snow, dust or debris for best charging.
EXTERNAL TEMPERATURE SENSOR (optional add-on)
Your temperature sensor requires no on-going maintenance.
RADIATION SHIELD
Issue:
Excessive dirt and build-up on the plating can
hamper air flow.
Solution:
Wipe the outer edge of each ring with a damp
cloth.
Issue:
Debris or insect nests can be caught inside the
shield.
Solution:
Check the radiation shield at least once a year
for debris or insect nests and clean when necessary. You
should disassemble and thoroughly clean your radiation
shield at least once a year. See your ISS User Manual for
detailed instructions.
Note
: If you have a 24-Hour Fan-Aspirated Radiation Shield, it
is a good idea to replace the NiCad C-cell batteries when you
clean the shield.
OUTSIDE TEMPERTURE/HUMIDITY SENSOR
This sensor is located inside the radiation shield. While the
temperature/humidity sensor does not need on-going
maintenance, you should remove dust when you have
access to it while performing a thorough cleaning of the
radiation shield.
Issue:
Dust build-up can interfere with air flow over the
sensor.
Solution:
When you remove the plate in the radiation
shield on which the the temp-hum board is installed, you
will see a small, white, vented cover lined with
gold-colored mesh. Using a clean, dry toothbrush, gently
remove any dust from the cover. You can remove the
cover from the board and take out the mesh to do a more
thorough cleaning if necessary.
LEAF WETNESS SENSOR (optional add-on)
Issue:
Dirt and debris on the surface of the sensor can
affect accuracy.
Solution:
Clean the sensor by scrubbing its surface with a
clean toothbrush, using water and a mild liquid detergent.
Rinse well.
SOIL MOISTURE SENSOR (optional add-on)
Your soil moisture sensor requires no on-going maintenance.
Davis Instruments, 3465 Diablo Avenue, Hayward, CA 94577-2778, USA • 510-732-9229 • www.davisnet.com
SENSOR MAINTENANCE
