RAWS-H Remote Automated Weather Station
2. Getting Started
Set up and test your station before field deployment.
NOTE
Keep this manual and the CR1000KD Keyboard Display
with the RAWS.
Review the station siting and orientation
section before field deployment. If a problem is encountered,
review the equipment wiring and troubleshooting sections in this
manual.
NOTE
After siting and leveling the RAWS station, open the enclosure and
(1) connect the battery cable and (2) verify the CH100 switch is in
the ‘on’ position.
When this equipment is not in use (i.e.,
transport or storage), disconnect battery cable to the CH100.
NOTE
3. Station Siting and Orientation
3.1 General Description
Selecting an appropriate site for the RAWS is critical in order to obtain
accurate meteorological data. In general, the site should be representative of
the general area of interest and away from the influence of obstructions such as
buildings and trees.
If any part of the weather station comes in contact with
power lines, you could be killed. Contact local utilities
for the location of buried utility lines before digging or
driving ground rods.
WARNING
3.2 Air Temperature and Relative Humidity
A temperature and relative humidity sensor should be located over an open
level area at least 9 m in diameter (EPA). The surface should be covered by
short grass, or where grass does not grow, the natural earth surface. The sensor
must be housed inside a radiation shield and adequately ventilated.
Situations to avoid include: 1) large industrial heat sources, 2) rooftops, 3)
steep slopes, 4) sheltered hollow, 5) high vegetation, 6) shaded areas,
7) swamps, 8) areas where snow drifts occur, and 9) low places holding
standing water after rains.
3.3 Precipitation
A rain gauge should be located over an open level area covered by short grass,
or where grass does not grow, the natural earth surface. Level the rain gage.
3.4 Solar Radiation
A solar radiation sensor should be located to avoid shadows on the sensor at
any time. Orient the solar radiation sensor where the solar radiation sensor
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