Davis 6322C Bedienungsanleitung PDF herunterladen (Seite 27)

Maintenance and Troubleshooting

Maintaining UV and Solar Radiation Sensors

If the ISS is a Plus model and contains UV and solar radiation sensors, do not touch

the small white diffusers on top of the sensors. Oil from skin reduces their sensitivity.

If you are concerned that you have touched the diffusers at any time, clean the UV

diffuser using ethyl alcohol with a soft cloth. When cleaning the UV diffuser, DO

NOT use rubbing or denatured alcohols because they can affect accuracy of the sen-

sor readings. Ethyl alcohol can be procured through an industrial or laboratory sup-

ply store. Clean the solar diffuser with a soft damp cloth.

Due to the sensitivity of ultraviolet and solar radiation sensors it is common practice

for manufacturers to recommend re-calibration after a period of time. Users

demanding high accuracy typically recalibrate their sensors annually. Here at Davis

Instruments, we have seen less than 2% drift per year on the readings from these

sensors.

Contact Technical Support about returning your sensor for calibration. See

“Contacting Davis Instruments” on page 27.

Cleaning the Radiation Shield

The outer plating of the radiation shield should be cleaned when there is excessive

dirt and build-up on the plating. Use a damp cloth to clean the outer edge of each

ring.

Note: Spraying down or using water excessively to clean the radiation shield can damage the sensitive

sensors or alter the data and readings the ISS is transmitting.

Check the radiation shield for debris or

insect nests at least once a year and clean

when necessary. A buildup of material inside

the shield reduces its effectiveness and may

cause inaccurate temperature and humidity

readings.

To thoroughly clean the radiation shield:

1. Remove the rain collector cone.

2. Using a Phillips head screwdriver, loosen

the three 4'' (~100mm) screws holding the

radiation shield plates together.

3. Taking care to maintain the order in which

the five plates are assembled, separate the

plates as shown and remove all debris

from inside the shield.

4" Screw

(3)

Plates

Rain Collector Base

Temp/Humidity

Sensor Plate

Lock

Washer

Flat

Washer

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